- Boost-users - lists.preview.boost.org

spirit list_p example
by Larry 02 Sep '03

02 Sep '03

From boost-1.30.2 I built the list_parser.cpp example using MSVC++7.1. In the CSV list I added ",,2" to the end of the line to be parsed. The program ran but the neither of the added elements were included in the output vector. Having used the tokenizer before I know it will generally gobble up adjacent delimiters without any output. You can get the empty token if you ask for the delimiters as well and then just discard the delimiters (sort of). But I was surprised that the 2 didn't make it to the output vector. I expected the empty list entry would not make the output vector. I tried adding ~anychar_p to the rule but that didn't help. If I change the input list to add ",\"\",2" I get "" and 2 in the output vector. Applications like spreadsheets do not put missing column values for numeric columns as "" items generally. Maybe I am missing something because it certainly isn't the behavior I would expect (either from the parser or the tokenizer).

4 9

adjancency propoerty iterator
by sashan 02 Sep '03

02 Sep '03

Hi Is there an adjancency iterator for property types. You can get an iterator for property types like this: typedef graph_property_iter_range<GraphType, vertex_name_t>::iterator VNameIterator; .... tie(It, ItEnd) = get_property_iter_range(m_Graph, vertex_name); I'd like to know if there is something similar for adjacency iterators. Thanks [Non-text portions of this message have been removed]

1 0

RE: [Boost-Users] Given std::map<ID,struct>, efficient way to access std::vector<struct.member>?
by Sam Partington 01 Sep '03

01 Sep '03

Well, I've trimmed you're example down some more, as to me it didn't seem to be important that the struct was a member of CFilter. So I think your question boils down to : struct A { int a; }; typedef std::map<int, A> my_map; void do_something_on_a_slice(int a) { // whatever } void f(const my_map& map_) { std::for_each(map_.begin(), map_.end(), /*what goes here*/); } You could use iterator_adaptors for this, but I think that is complicating things unnecessarily, something like this would work (untested) : struct select_a : std::unary_function<my_map::value_type, int> { const result_type& operator()(const argument_type& arg) const { return arg.second.a; } // similar non const operator here }; void f(const std::map<int, A>& map_) { boost::projection_iterator_generator<select_a, my_map::const_iterator>::type first(map_.begin()), last(map_.end()); std::for_each(first, last, do_something_on_a_slice); } See http://www.boost.org/libs/utility/projection_iterator.htm But I think bind in this situation is a better solution. (Partly because the interface to iterator_adaptors will be changing in the next release, possibly to the point of breaking the above code - Jeremy?) void f(const my_map& map_) { using boost::bind; std::for_each(map_.begin(), map_.end(), bind(do_something_on_a_slice, bind(&A::a, bind(&my_map::value_type::second, _1) ) ) ); } Though at this point I would consider writing a function object, any expression involving three bind's is getting close to (or some might say past) write-only code. As to efficiency, if this is a bottleneck it is mostly likely the iteration over the map that is causing the problem, or the actual 'doing' code. Most of the binding code should be optimised away by the compiler to a bare mimimum. It may be that you are better changing container, a sorted vector perhaps. HTH Sam (PS Apologies if I did miss a point somewhere and oversimplify your code) Chris Russell <> wrote: > Hello folks, I've got an interesting little design problem > and I'm looking > for some advice on how best to implement an efficient solution. (snip) > Here's a simplified statement of the problem that I believe > outlines the > relevant details: > > I've got a class declared as follows: > > --- begin example class ---- > In English: CFilter declares some structure with some number > of data members > of arbitrary types. Internally CFilter allocates a std::map of these > structures using some key_t. Effectively this defines a table > of data whose > rows are of type sRow_t, and whose columns can be conceptualized as > std::vector<A_t>, std::vector<B_t> where > std::vector<sRow_t.some_member>.size() == mapData<key_t, > sDataRow_t>.size(). > > At runtime, CFilter.ProcessRow is called std::map<key_t, > sRow_t>.size() times followed by a single call to CFilter.ProcessData. > > I'm trying to figure out how to _efficiently_ access the > column vectors in > the implementation of CFilter.ProcessData.

1 0

[BGL] Installing a property
by sashan 31 Aug '03

31 Aug '03

Hi I have a mass spring system where the particles are mapped to the vertex name property of the vertex. Now I've read (in the BGL red book) that one can install a custom property using an enumerated type. However it says that the enum must be a unique number. How do I enforce this in my code? Do I have to manually track the numbers myself? Thanks sashan [Non-text portions of this message have been removed]

2 1

Given std::map<ID,struct>, efficient way to access std::vector<struct.member>?
by Chris Russell 31 Aug '03

31 Aug '03

Hello folks, I've got an interesting little design problem and I'm looking for some advice on how best to implement an efficient solution. [ I posted this message to comp.lang.c++.moderated yesterday. I'm reposting here because this _seems_ like a job for some type of iterator adaptor and I'm thinking that perhaps one of the Boost libraries might be useful in this context. But which (if any)? Would uBLAS help me here perhaps? Or am I way off base? ] Here's a simplified statement of the problem that I believe outlines the relevant details: I've got a class declared as follows: --- begin example class ---- class CFilter { public: typedef struct tag_sRow { A_t A; B_t B; C_t C; .. .. .. // some number of structure members... } sRow_t; typedef std::map<key_t/*type unimportant*/, sDataRow_t> mapData_t; typedef mapDataSet_t::iterator mapiterData_t; typedef mapDataSet_t::const_iterator mapconstiterData_t; private: mapData_t m_mapData; public: void ProcessRow(const sRow_t& sRow) { // process a single row of data } // end method ProcessRow void ProcessData(const mapData_t& mapData) { // algorithm needs fast access to: // std::vector<A_t>, std::vector<B_t>, std::vector<C_t> .... } // end method ProcessData }; // end class declaration CFilter --- end example class --- In English: CFilter declares some structure with some number of data members of arbitrary types. Internally CFilter allocates a std::map of these structures using some key_t. Effectively this defines a table of data whose rows are of type sRow_t, and whose columns can be conceptualized as std::vector<A_t>, std::vector<B_t> where std::vector<sRow_t.some_member>.size() == mapData<key_t, sDataRow_t>.size(). At runtime, CFilter.ProcessRow is called std::map<key_t, sRow_t>.size() times followed by a single call to CFilter.ProcessData. I'm trying to figure out how to _efficiently_ access the column vectors in the implementation of CFilter.ProcessData. Any suggestions would be greatly appreciated. Thanks in advance - Chris Russell

1 0

Inconvenience in time_parsing.hpp - uninit variables
by Larry Knain 30 Aug '03

30 Aug '03

I was trying to use the date_time ptime functions with ISO syle input (boost 1.30.2 with MSVC++6 SP5). The function parse_undelimited_time_duration in time_parsing has three short variables hours, min, and sec that are uninitialized which lead to unpredictable results. These are at line 99. I stumbled on to this when I passed a string "20011027T0202" to ptime(from_iso_string()). To my surprise when I printed the value out it came back as 20011026T222345! The code works OK as is if you always pass a full HHMMSS. This must have been found in parse_delimited_time_duration as it has unsigned shorts that are intialized to zero.

2 1

[BGL] adjancency iterators for property types
by sashan 30 Aug '03

30 Aug '03

Hi Is there an adjancency iterator for property types. You can get an iterator for property types like this: typedef graph_property_iter_range<GraphType, vertex_name_t>::iterator VNameIterator; .... tie(It, ItEnd) = get_property_iter_range(m_Graph, vertex_name); I'd like to know if there is something similar for adjacency iterators. Thanks -- sashan http://www.cs.auckland.ac.nz/~sgov008/

1 0

boost::function syntax
by shyamemani 29 Aug '03

29 Aug '03

Hello everyone, I was looking at the boost::function preferable syntax. boost::funcion<float (int,int) > I also see that this has also been accepted by the standard for future STL implementation. The C++ grammar for template declaration is as stated below: template-argument-list: template-argument template-argument-list , template-argument template-argument: assignment-expression type-id id-expression None of the 'declaration' rules also seem to parse the tokens 'float (int,int) (I know I am missing something here). I could not figure out why the string 'float (int,int)' is accepted by the compiler and what type it is assigned? Is it just a extension of the standard by GCC? Can somebody help me figure this out? Thanks, Shyam

5 21

Broken link on boost.org/libs page
by Sam Partington 29 Aug '03

29 Aug '03

http://www.boost.org/libs/hdr_depend.html Is giving a HTTP 404 error. Cheers Sam

1 0

Re: Lambda shortcut?
by Daryle Walker 27 Aug '03

27 Aug '03

On Tuesday, August 26, 2003, at 10:05 AM, Jaakko Jarvi wrote: > In our last exciting episode Stephen Love wrote: >> operator-> *is* overloadable. > > It is, but not freely. The return type cannot be arbitrary, say a > lambda_functor type, making it not very useful for the LL. Specifically, the right side of "->" must be the NAME of a class' member or member function. It cannot be any kind of actual object (including pointers-to-member). This restricts the left side to: 1. A pointer to a (class/struct/union) data object (conventional C usage) 2. A class object with an "operator ->()" that returns a pointer to a data object 3. A class object with an "operator ->()" that returns an object that follows rules [2] or [3]. No matter what, "operator ->()" eventually leads to the standard C usage. All you can do is delay the event and build proxy objects to obtain the data. Daryle

1 0

Link errors
by Ken Crismon 26 Aug '03

26 Aug '03

To all, I am a new user to the BOOST community and am putting together some test code to get a handle on what BOOST is and how it works. Am using .NET 2003 and am getting the following link errors. error LNK2019: unresolved external symbol "__declspec(dllimport) public: class std::_Ptrit<char,int,char *,char &,char *,char &> __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::end(void)" Thanks in advance for the help, Ken Crismon

2 1

First Boost installation under Windows and Borland
by Matías Nicolás Bossa 26 Aug '03

26 Aug '03

Hello, I'm a new Boost user and I need to install it (v. 1.30.0) under Windows 2000, with Borland C++ Builder 6. I've succeed in correctly installing and using it under linux, but I couldn't install it under Windows. I downloaded and unpacked boost_1_30_0.zip. I set the following variables: BOOST_ROOT=d:\proyect\boost_1_30_0 TOOLS=borland BCCROOT=c:\archiv~1\borland\cbuilder6 PYTHON_ROOT=c:\win\python I compiled bjam.exe by running tools\build\jam_scr\build.bat, and put it somewhere in the path. (but I also tried downloading a precompiled version) I run bjam from the boost_1_30_0 directory and the following message appeared: /****************************************************/ /****************************************************/ ...found 5339 targets... ...updating 573 targets... borland-C++-action libs\python\build\bin\boost_python.dll\borland\debug\runtime-link-dynamic\numeric.obj libs\python\build\../src\numeric.cpp: Error E2401 D:\project\boost_1_30_0\boost/python/object/inheritance.hpp 69: Invalid template argument list Error E2040 D:\project\boost_1_30_0\boost/python/object/inheritance.hpp 69: Declaration terminated incorrectly Error E2231 D:\project\boost_1_30_0\boost/python/object/inheritance.hpp 130: Member cast_generator<Source,Target>::is_upcast cannot be used without an object Error E2401 D:\project\boost_1_30_0\boost/python/object/inheritance.hpp 131: Invalid template argument list Error E2040 D:\project\boost_1_30_0\boost/python/object/inheritance.hpp 132: Declaration terminated incorrectly Error E2228 D:\project\boost_1_30_0\boost/python/object/inheritance.hpp 132: Too many error or warning messages *** 6 errors in Compile *** /****************************************************/ /****************************************************/ For the moment I just need ublas and random libraries, I need boost in order to compile another library which use it, called Bayes++. I wil be very grateful if someone could help me, and I'm sorry for the length of the mail. Regards, Matías ___________________________________________________ Yahoo! Messenger - Nueva versión GRATIS Super Webcam, voz, caritas animadas, y más... http://messenger.yahoo.es

2 3

Lambda shortcut?
by Hurd, Matthew 26 Aug '03

26 Aug '03

Hi, Is there a short cut for bind(&class::method_name, this, _1)? I could wrap it in a macro, as I use it enough, but is there something nicer I'm missing? I often just do the for loop as it is a little more readable, maybe... For example, for( some_collection::iterator i = check_list.begin(); i!= check_list.end(); ++i ) { turn_off_calcs(*i); } Is hopefully the same as for_each( check_list.begin(), check_list.end(), lambda::bind(&instrument_store::turn_off_calcs,this,lambda::_1) ); Regards, Matt.

3 3

How to use boost::bind
by Darren Cook 26 Aug '03

26 Aug '03

Hi, I have a project with many occurences of while loops iterating through a container, and operating on the data. I'd like to use for_each() and turn them into one-liners, but I don't like writing one-off functor classes. I was hoping boost::bind could help, but I've read the docs, scratched my head, and failed to work out how the examples apply to my case. Maybe they don't and I'm trying to use it for something it cannot do? See an example below. My function currently looks something like grab_keys() and I want it to look like grab_keys2(). Could some kind soul show me how to write this? (or explain why it cannot be written). Thanks, Darren ------------------------- class Info{ public: int key; std::set<int> points; }; class InfoContainer{ public: Info* get(int); }; void grab_keys(const InfoContainer &cs,const Info *c){ std::set<int> list; std::set<int>::const_iterator i=c->points.begin(); while(i!=c->points.end()){ Info *ec=cs.get(*i++); list.add(ec->key); //Previous two lines could be written: list.add(cs.get(*i++)->key); } //Do something with list here. } void grab_keys2(const AllInfo &cs,const Info *c){ Points list; std::for_each(c->points.begin(),c->points.end(), boost::bind( /* what goes here? */ ) ); //Do something with list here. }

3 4

newbie: comand line for g++
by Ruslan Talpa 26 Aug '03

26 Aug '03

how to staticaly link a boost library (regex) to a project (what is the g++ command line for that) Thanks PS i have only used VC till now.

2 1

XML output from Boost test framework.
by Jarl Friis 26 Aug '03

26 Aug '03

Hi. The release notes on Boost test framework says: XML log format is introduced XML report format is introduced I would like to know how I use those features, the documentation says nothing about it, at least I can't find it. Thanks in advance. Jarl

2 3

ClearCase and Boost
by Matt Trentini 26 Aug '03

26 Aug '03

Heya, The best way I've found to import Boost into ClearCase is by using "clearfsimport". If anyone wants a hand in setting up the parameters (it's a bit tricky - please make sure you don't use the mklabel and preview options together, otherwise you'll lock the VOB!) let me know. Cheers, Matt

1 0

filesystem in CVS differs from 1.30.x ?
by Anders Moe 26 Aug '03

26 Aug '03

Hi all. I'm somewhat confused about how to use filesystem, since it appears that the CVS version differs from 1.30.x. In particular, the following simple snippet suddenly wouldn't compile on 1.30.2 using MSVC 7.1: boost::filesystem::path p("dd"); boost::filesystem::ofstream os("dd"); It works, however, with the current CVS version. In fact, I have failed to compile any variant of the above under 1.30.2. Regards, Anders Moe.

2 1

mem mapping containers
by spam_me_da 25 Aug '03

25 Aug '03

I'd like to know if there is any available implementation of a memory mapped linear array. (Linux) Thanks -K

1 0

boost::lambda how to question
by Eric Twietmeyer 25 Aug '03

25 Aug '03

Hello, I'm been having great fun getting to know and starting to use the lambda library over the past month or so. I can't believe how well the optimizing compiler I have (Vc7.1) is able to convert these lambda expressions used in for_each or find_if into tight loops. However, there I things I'm certain are possible, but I haven't been able to figure out. More examples of using the library than are found in the doc would be extremely useful. For instance, how do I do the equivalent of the following using a single for_each with suitable lambda expression as operator? using namespace boost::lambda; std::vector<int> vec1; std::vector<int> vec2; struct tOp { std::vector<int>& m_vec; tOp( std::vector<int>& vec ) : m_vec( vec ) {} void operator()( int entry ) { std::vector<int>::iterator it = std::find_if( m_vec.begin(), m_vec.end(), _1 == entry ); if ( it != m_vec.end() ) m_vec.erase( it ); } }; // How to use lambda expression here for third arg? std::for_each( vec1.begin(), vec1.end(), tOp( vec2 )); Basically, I have two lists (vectors) that overlap. I want to erase all elements from the one vector from the other vector, i.e. determine if the element from vec1 exists in vec2, and if so erase it from vec2. If this is possible and relatively straight forward using a lambda expression, I would love to see an example. Thanks in advance, Eric Twietmeyer PS It looks like something of this sort can be done with std::set_difference if one outputs into a third vector, but for argument's sake, let's assume I don't want to introduce a third vector. --------------------------------- Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software [Non-text portions of this message have been removed]

2 1

boost.thread, DEC C++ (OpenVMS)
by Johan Nilsson 25 Aug '03

25 Aug '03

Hi, I've just tried to compile boost.thread under OpenVMS and got it working mostly fine, with a few quirks. I'm using Boost 1.30.2 and DEC C++ 6.5 under OpenVMS Alpha 7.1-1H1. OpenVMS provides a compliant(?) pthreads implementation. Note that I did _not_ use Boost.jam (I did try, but couldn't get it going). Compiling the .cpp files under BOOST_ROOT/libs/thread/src works pretty fine, once having defined BOOST_HAS_THREADS, BOOST_HAS_PTHREADS and BOOST_HASTIMEOFDAY on the compiler's commandline. But not for tss.cpp - I get the following error: ------------------------------------------------------------------------- res = pthread_key_create(&m_key, cleanup); .....................................^ %CXX-E-INCOMPATIBLEPRM, argument of type "void (*)(void *)" is incompatible with parameter of type "void (*)(void *) C" at line number 192 in file DISK$USER1:[COMMON.BOOST.LIBS.THREAD.SRC]TSS.CPP;1 ---------------------------------------------------------------------------- --- After some digging around I found out that the error only appears when using the compiler switch "/standard=strict_ansi", which is what I'm using all the time. Now to me it looks like the DEC C++ compiler believes that name mangling isn't the only thing that differs between "C" and "C++" linkage - does anyone here have any comments on that? See below for a small example (and possible way to work around this in the boost.thread implementation): ------ sample.cpp ------- extern "C" { typedef void (*c_linkage_cb_t)(void*); void c_linkage(void (*pfn)(void*)); } inline void cpp_linkage_using_c_typedef(c_linkage_cb_t pfn) { c_linkage(pfn); } inline void cpp_linkage(void (*pfn)(void*)) { c_linkage(pfn); } ---------------- end sample.cpp ------------------- And here's the output from the compiler: $ cxx /standard=strict_ansi t.cpp c_linkage(pfn); ..................^ %CXX-E-INCOMPATIBLEPRM, argument of type "void (*)(void *)" is incompatible with parameter of type "void (*)(void *) C" at line number 19 in file DISK$USER1:[COMMON.BOOST.LIBS.THREAD.SRC]T.CPP;11 I don't know if this is a compiler bug or not, but in order to work around this in boost.thread, wouldn't it be feasible to provide a similar fix to the tss implementation to avoid the compilation problem - e.g. ---- tss.hpp ----- ... extern "C" { typedef int (*pthread_<something>_cb_t)(void*); } ... class tss { ... ... tss(pthread_<something>_cb_t cb) ... --- end tss.hpp ---- Comments appreciated // Johan

2 3

out of core property map and constant property map
by Joel Young 24 Aug '03

24 Aug '03

Has anyone created property maps that operate out of core? either against a database or a flat file? Would you like to share? Also has anyone created a property map that, once create returns a constant value for all queries (writable is nice, it doesn't do anything with the write of course)? This might be useful for compactly representing constant edge capacities. Finally, an out of core BasicMatrixConcept implementation for use with all-pairs shortest path on largish (n=1.6M, e=10*n) graphs would be handy. Thanks, Joel

1 0

graph adapter from bidirectional to undirected
by Joel Young 24 Aug '03

24 Aug '03

Has anyone created a graph adapter to make a bidirectional graph appear as an undirected graph? If not, is the difficulty in making an edge iterator across both the in and out links? I particular I would like to compute a weak connected components on a bidirectional graph. So if you have a modified connected components alg for that it would be great. Thanks, Joel

1 0

bjam exe for cygwin on win98
by Fernando Cacciola 23 Aug '03

23 Aug '03

Hi, The link on http://www.boost.org/tools/build/index.html#Jam states that bjam executables can be found at: http://sourceforge.net/project/showfiles.php?group_id=7586 but I don't know which of the bjams there is an executable for cygwin on win98 TIA Fernando Cacciola

3 5

Parent-Child Object Relationships with shared_ptr
by Martin Ecker 23 Aug '03

23 Aug '03

Hello, I've been thinking of switching one of my projects to use boost::smart_ptr and I'm currently investigating this option a bit. In my project there are a lot of cases where an object acts as factory/parent object to create other child objects. These child objects must keep the parent object alive as long as one of them still exists. Or in other words, even if the client does not hold a pointer to the parent object anymore, the parent must continue to exist as long as there is still a child object. Also the child objects sometimes need to have access to the parent object that created them. Therefore, I thought I'd have them hold a shared_ptr to the parent object. So the situation looks something like this, where both Parent and Child objects are only allocated on the heap and should only be passed around as shared_ptr. class Parent { public: boost::shared_ptr<Child> CreateChild() const { boost::shared_ptr<Child> child(new Child(this)); return child; } }; class Child { friend class Parent; protected: Child(const boost::shared_ptr<Parent> parent) : m_parent(parent) {} private: boost::shared_ptr<Parent> m_parent; }; As far as I understand it I can't do new Child(this) because Child expects a shared_ptr, so I'd have to derive Parent from enable_shared_from_this. However, in my project there are a number of classes in a rather complicated class hierarchy to which the above pattern applies and I'd thus like to avoid having to (multiply) derive them from enable_shared_from_this. Is there another, possibly better way of achieving what I want to do (keep the parent alive as long as there are still child objects) that I haven't discovered yet? Or do I really have to derive all these classes from enable_shared_from_this? Do I have to derive each class in a class hierarchy from enable_shared_from_this, if each of them needs to give out a shared_ptr-managed this pointer? Thanks for any help, Martin

3 2

newbie trying to make a dll
by schmitty9812003 22 Aug '03

22 Aug '03

This is my very first experience with Boost. I am actually trying to use the SDTS++ libraries (if anyone is familiar with them) which use Boost. Anyway, I successfully built the library using the Jamfile that was included with the download which looks something like this: lib sdtsxx : ... : <include>$(BOOST_ROOT) <include>$(TOP) <include>. <include>$(TOP)/Windows # to get bogus "unistd.h" <rtti>on <exception-handling>on <msvc><*><cflags>-TP # force to compile as C++ <gcc><*><cflags>"-x c++" # force to compile as C++ <gcc><*><define>VECTOR_ITERATOR_POINTER_NOT_EQUIVALENT : debug release ; However, what I need is for the library to be a dll. So I changed the Jamfile to look something like this: SOURCES = ...; dll sdtsxx : $(SOURCES) : <include>$(BOOST_ROOT) <include>$(TOP) <include>. <include>$(TOP)/Windows # to get bogus "unistd.h" <rtti>on <exception-handling>on <msvc><*><cflags>-TP # force to compile as C++ <gcc><*><cflags>"-x c++" # force to compile as C++ <gcc><*><define>VECTOR_ITERATOR_POINTER_NOT_EQUIVALENT : debug release ; Unfortunately this gives me linking errors like this: sb_Accessor.obj : error LNK2001: unresolved external symbol "public: class boost::filesystem::path __thiscall boost::filesystem::path::branch_path(void)const "(? branch_path@path@filesystem@boost@@QBE?AV123@XZ) Now I don't know that this is a Boost problem or if I should go to the SDTS people. Since the unresolved externals are from the Boost libraries I figured it was a Boost issue. So am I doing something wrong with the Jamfile, or is there a problem with Boost? Or is it something completely different? Oh, I'm using msvc on an XP machine, if that matters... -ms

2 1

Compiler help
by Henry ?? 22 Aug '03

22 Aug '03

I'm trying to try out the thread library on HP-UX and SGI Irix using GNU GCC and have not been able to run them succesfully. I noticed that on the "Boost Regression Tests" the compiler Status for both my platforms and compilers have failed with messages similar to what I am getting. Do I have any options or is it just not possible to try the thread library for my systems. Thanks

4 3

request: complete list of output files of build?
by Li Lirong 22 Aug '03

22 Aug '03

Is it possible for the boosters to provide a complete list of the lib and dll files (include debug and release versions) that the build system produces? Thanks. Best regards, Lirong

1 0

RE: [Boost-Users] Re: Re: boost::intrusive_ptr and Managed C++?
by Ferdinand Prantl 22 Aug '03

22 Aug '03

Hi Holger, > -----Original Message----- > From: Holger Grund [mailto:yg-boost-users@gmane.org] > Sent: Thursday, August 21, 2003 14:50 > To: boost-users(a)yahoogroups.com > Subject: [Boost-Users] Re: Re: boost::intrusive_ptr and Managed C++? > > > "Ferdinand Prantl" <ferdinand.prantl(a)ixos.de> wrote > > > The second option (as Holger says) is to make a simple facade to the > c++ > > library (all you might use), which will not have templates (here > smart > > pointers) on the interface, and to use this facade instead. > > > Did I say that? Anyway, I absolutely agree. Oops, sorry, I thought a bit further... :-) > > I just want to point out that IMHO the best solution is to > _not_ export instrusive_ptr_add_ref and _release. If you do > new and delete are called from different modules which works > only if the same CRT instance is used. And that works only if > both link against the exact same version of the CRT dll (that > is both linking against a static CRT still yields to > instances => two heaps => error). The generally safest solution yes, but not always the simpliest and most understandable. With a pile of C++ libraries with templates and STL on interface to use, I would not be very keen on writing facades for each and every... Every such a wrapper also increases the complexity of the solution. > > While we're at it, it's almost always a bad thing to export > classes or functions that rely on classes from a DLL. DLLs > are a run time concept. They don't have any clue which > version of the compiler a consumer is built with. > > E.g. say you export a function > void foo( std::string& s ) > { > s = "Hello World!"; > } Oh yeah, that's terrible constraint - if releasing binary library, one must support more compilers and also create different binary names (e.g. boost_regex). It is not needed if you release sources of the library (not the case of commercial APIs). If STL is widely used in the dependency tree of libraries, it is a pity to abandon it from their interfaces, building special marshalling structures or serializing into streams or return pointers. In this situation I broke the general recommendation (no templates on iface), preferred simplier solution and went on with STL on interfaces. It is cheaper and runs faster too. I moved the task of creating a facade without STL to the person, who needs it. As long as everybody are happy with usage of the same STL on interface, such a facade does not need to be borned (for managed .net assemblies it is also not necessary)... > > The DLL is built with the version A of the compiler and STL > and the consuming application is built with version B. There > is no guarantee for a binary compatibility between the two > version. And indeed the code above will break if version 6 & > 7 of VC are used (The former used a COW scheme while the > second uses a short string optimization). This must not happen. It is responsibility of the build configuration to use the belonging import libraries. It can be checked and forced by pragmas in msvc. Ferda > > Also, do note that the DLL CRT now supports side by side sharing. > > While I am in rant mode the catch(...) thing is also a very > bad idea in VC. This currently catches (this will be fixed in > 8.0) structured exception that are not C++ exception. That > way serious error conditions are silently ignored. > > -hg > > > > > ------------------------ Yahoo! Groups Sponsor > ---------------------~--> Buy Ink Cartridges or Refill Kits > for Your HP, Epson, Canon or Lexmark Printer at Myinks.com. > Free s/h on orders $50 or more to the US & Canada. > http://www.c1tracking.com/l.asp?cid=5511 > http://us.click.yahoo.com/l.m7sD/LIdGAA/qnsNAA/EbFolB/TM ---------------------------------------------------------------------~-> Info: <http://www.boost.org> Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

1 0

boost::python - double vs. int - unexpected behavior
by cavok＠filibusta.crema.unimi.it 21 Aug '03

21 Aug '03

hi, i attached a simple example that shows the following behavior: $ python Python 2.2.3+ (#1, Aug 10 2003, 10:11:23) [GCC 3.3.1 (Debian)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import test >>> a=test.A() >>> a.f(3) double >>> a.f(3.8) double >>> a.f(int(3)) double >>> $ well, doesn't it look weird? any idea on how i can get the correct c++ method called? cheers dom -----[ Domenico Andreoli, aka cavok --[ http://filibusta.crema.unimi.it/~cavok/gpgkey.asc ---[ 3A0F 2F80 F79C 678A 8936 4FEE 0677 9033 A20E BC50 [Non-text portions of this message have been removed]

2 3

[BGL] How to destroy a subgraph?
by Stefan Slapeta 21 Aug '03

21 Aug '03

Hi, is it possible to destroy a subgraph child? I didn't find nothing on this in the documentation. Is there any other way to free the subgraph's resources? Thanks, Stefan

2 2

RE: [Boost-Users] Re: boost::intrusive_ptr and Managed C++?
by Ferdinand Prantl 21 Aug '03

21 Aug '03

Hello Drew, I implement managed assembly in mc++. I use c++ library with smart pointers and stlport on the interface to implement a functionality in unmanaged c++, even if it is exposed to .net through managed classes. So this scenario in general works. Holger has already answered you, I see also the problem in different heaps/runtime versions. You must ensure the same versions of the runtime (not only debug/release but also version of msvs - 6, 7, 7.1) and of the templated libraries used (in my case stlport for 6, 7, 7.1, which also must use the same runtime). I use msvcrt/msvcrtd everywhere and link everything automatically using pragmas to prevent strange errors from manual configuration. It can look complex but in reality it is pretty simple. The second option (as Holger says) is to make a simple facade to the c++ library (all you might use), which will not have templates (here smart pointers) on the interface, and to use this facade instead. Good Luck, Ferda P.S. with the first option you will come to problems if you register the assembly for CCW but that's another story... -----Original Message----- From: Holger Grund [mailto:yg-boost-users@gmane.org] Sent: Wednesday, August 20, 2003 18:18 To: boost-users(a)yahoogroups.com Subject: [Boost-Users] Re: boost::intrusive_ptr and Managed C++? "Drew" <drewtenn(a)yahoo.com>, > I originally posted this to microsoft.public.dotnet.languages.vc, > but they referred me back to here. > > Has anyone used boost's intrusive_ptr with Managed C++ extensions? > Mmh, not really. And it actually doesn't (currently ?) sound like a very compelling idea to me. > I have a small project where the executable (managed) is linked to a > native C++ dll. > > The code looks like: > > int _tmain() > { > boost::intrusive_ptr<Unmanaged> pUn = __nogc new Unmanaged(); > > return 0; > } > > when I exit out of main, boost::intrusive_ptr_release() throws an > exception. The last known method called is: > > UnmanagedLib.dll!_CrtIsValidHeapPointer(...) Line 1807 > This probably is not related to the managed extensions. It's more likely that intrusive_ptr's dtor calls into the DLL to free the pointer which is only possible if both modules use the DLL version of the CRT. The message indicates that the pointer to be freed is bogus or more likely from another heap. This is caused by a mismatch of the CRTs used by the main program and the DLL. You could use the /MD[d] option for both projects, so that both modules share a common CRT heap. I'd prefer to move intrusive_ptr_add_ref/release functions to the program that uses the instrusive_ptr. Don't export these functions from the DLL. Rather include these functions at build time. That way you ensure, that operator delete is called from the same module as operator new and everything should be fine. > Unmanaged* pUm = new Unmanaged(); > delete pUm; > Yep. Same module. No problem. hth -hg ------------------------ Yahoo! Groups Sponsor ---------------------~--> Buy Ink Cartridges or Refill Kits for Your HP, Epson, Canon or Lexmark Printer at Myinks.com. Free s/h on orders $50 or more to the US & Canada. http://www.c1tracking.com/l.asp?cid=5511 http://us.click.yahoo.com/l.m7sD/LIdGAA/qnsNAA/EbFolB/TM ---------------------------------------------------------------------~-> Info: <http://www.boost.org> Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

3 3

[BGL] single pair problem with bfs
by Jérémie Leguay 21 Aug '03

21 Aug '03

Hi everybody! I really need to perform the single-pair problem. I have begin to implement it as it is written in some mail of the mailing list. I do a breadth first search and I want to use both a visitor recor_distances and a visito of my own which throws an exception to stop the algorithm when the destination is found. My problem is that I did'nt found the way to mix theses two visitors. Can you help me? regards, Jérémie ___________________________________________________________ Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en français ! Yahoo! Mail : http://fr.mail.yahoo.com

2 1

boost::intrusive_ptr and Managed C++?
by Drew 20 Aug '03

20 Aug '03

I originally posted this to microsoft.public.dotnet.languages.vc, but they referred me back to here. Has anyone used boost's intrusive_ptr with Managed C++ extensions? I have a small project where the executable (managed) is linked to a native C++ dll. The code looks like: int _tmain() { boost::intrusive_ptr<Unmanaged> pUn = __nogc new Unmanaged(); return 0; } when I exit out of main, boost::intrusive_ptr_release() throws an exception. The last known method called is: UnmanagedLib.dll!_CrtIsValidHeapPointer(...) Line 1807 but when I replace my code with: Unmanaged* pUm = new Unmanaged(); delete pUm; no exception is thrown. Please help! -Drew

2 1

lambda&MSVC7.0 problem
by GIE 20 Aug '03

20 Aug '03

Hello! While trying to compile empty test prog (only #include "boost/lambda/lambda.hpp" and main) i've got following errors: ...\lambda\detail\arity_code.hpp(66) : error C2065: 'T' : undeclared identifier ...\boost\lambda\detail\arity_code.hpp(66) : error C2687: cannot define a nested UDT of a template class out of line ...\boost\lambda\detail\arity_code.hpp(66) : fatal error C1903: unable to recover from previous error(s); stopping compilation Can this be helped? (boots version 1.30.0) -- With best regards, GIE.

2 1

[bgl] question to induced subgraphs
by Stephan Höfer 20 Aug '03

20 Aug '03

Hello, I use an induced subgraph of a graph with additional user defined properties like coordinates and so on. Do I have access to this properties via the get and put functions using the indices of the subgraph or do I have to access these properties via the parent (if it is the root) resp. root of the subgraph? I tried both without the demanded success. Using the second way the results were a little bit more accurate than using the first way, but they were wrong in either case. I created the subgraph as Graph& tSubgraph = g.create_subgraph; where g is a before initialized graph. Maybe it works copying the properties to the subgraph, but that wouldn't be efficient in my opinion. Thanks in advance for your answers, Stephan

1 0

PC-Lint reports errors for VC6-specific implementation in is_same.hpp
by stefan_felkel2000 20 Aug '03

20 Aug '03

Hi all, Since I have included boost\dynamic_bitset.hpp in my project, PC-Lint reports many thousands of redefinitions of symbol 'is_same_part_1<<1>>::part_2<<1>> for the following code in type_traits\is_same.hpp. #ifdef BOOST_MSVC // the following VC6 specific implementation is *NOT* legal // C++, but has the advantage that it works for incomplete // types. template< typename T1 > struct is_same_part_1 { template<typename T2> struct part_2 { enum { value = false }; }; template<> struct part_2<T1> { enum { value = true }; }; }; If I replace #ifdef BOOST_MSVC with #if (defined BOOST_MSVC) && (BOOST_MSVC < 1300) The code compiles with Visual Studio .NET 2003 and PC-Lint doesn't report any error. Stefan Felkel

2 2

ClearCase and Boost
by Matt Trentini 20 Aug '03

20 Aug '03

Heya Everyone, We use Rationals ClearCase for our source code control here at work and I'm trying to figure out how to best integrate Boost into the ClearCase VOB's. I understand that this probably isn't the ideal forum but I felt certain that someone else out there has a similar configuration! My issue has to do with the different versions of boost. I don't need to maintain a complete source history (don't need every change to every file, just regular releases) but I do want to have multiple versions located at the same place (ie ie want there to be only one boost directory, not boost_1_30, boost_1_30_2 etc) with labels to specify the version. This way our build environment can always look at the one place in the VOB's and we use our config spec to specify which version we're using. Should be simple. ;) Now, I can download a version of boost, extract the files, export them (with clearexport_ffile) then import (clearimport) to the VOB. Then I can label those files. Unfortunately, if any files (or directories) have been deleted I won't know about it - they'll just remain there. I had a quick scan through the attic files and it seems like deleting files is not particularly uncommon. I don't want those old files (which could have been deprecated or buggy or whatever) just lying around waiting for bugs to creep in. So does anyone know of a better way? How are other people doing this? Cheers, Matt PS I've thought of 'hacky' solutions, like telling clearexport_ffile to create a unique branch for every new version of boost and just leaving each new version on the branch...or creating a branch and then running a script over everything, determining if anything needs removing. But, as I said, these are hacky! :)

1 0

Parsing Problem
by jwwillcox2003 19 Aug '03

19 Aug '03

struct usmtf : public grammar<usmtf> { template <typename ScannerT> struct definition { definition(usmtf const& self) { message = mainText; exerciseSet = !eol_p >> str_p("EXER")[do_print("EXER")] >> ch_p('/') >> *(field >> ch_p('/')) >> ch_p('/'); messageIdentifierSet = str_p("MSGID")[do_print("MSGID")] >> ch_p('/') >> *(field >> ch_p('/')) >> ch_p('/'); field = lexeme_d [ +(upper_p - ch_p('/') - eol_p) ]; mainText = exerciseSet >> eol_p >> messageIdentifierSet >> end_p; }; rule<ScannerT> message, mainText, exerciseSet, messageIdentifierSet, field; rule<ScannerT> const& start() const { return message; } }; }; Using this grammar above, it will parse EXER/EE/FF//MSGID// using mainText = exerciseSet >> messageIdentifierSet >> end_p; However, I want it to parse EXER/EE/FF// MSGID// and mainText = exerciseSet >> eol_p >> messageIdentifierSet >> end_p; does not work. Why? How do I parse what I want?

2 1

lexical_cast with unsigned short
by Charles Schwartz 19 Aug '03

19 Aug '03

If possible, please advise. using lexical cast w/unsigned short fails, on MSVC7: #include <boost\lexical_cast.hpp> #include <iostream> int _tmain(int argc, _TCHAR* argv[]) { std::string aStr("2"); unsigned short i = boost::lexical_cast<unsigned short>(aStr); \\ ERROR! std::cout << i << std::endl; return 0; }

3 3

[BGL/iterator_adaptor] retrieving edge iterators from a const graph object?
by Chris Russell 19 Aug '03

19 Aug '03

I'm developing an algorithm based on a DFS of a directed graph that models the BidirectionalGraph concept. In my DFS visitor I have a need to retrieve the pair of in_edge iterators of a specific vertex in my finish_vertex method. Invoking boost::in_edges(Vertex, Graph) and discarding the result compiles fine. However, I can't compile the statement boost::tie(edgeiniterBegin, edgeiniterEnd) = boost::in_edges(Vertex, Graph). I'm struggling to understand why the const-ness of the Graph object results in a "no user defined conversion. from const boost::iterator_adaptor ...." compilation error. I suspect that I have incorrectly specified the type of the in-edge iterators to which I'm attempting to boost::tie the returned iterator pair (my target iterators are declared as boost::graph_traits<mygraph_t>::in_edge_iterator currently) but haven't been able to figure out how else to explain my intent to the compiler. I'll post the specific error message produced by the Windows version of the Intel 7.x compiler and source if necessary - but I'm guessing that I'm missing something pretty obvious here. Any clarification/suggestions would be appreciated. TIA - Chris

2 2

[BGL] named parameter defaults and namespace confusion
by Chris Russell 19 Aug '03

19 Aug '03

In my project, I'm using several different graph objects that are declared in different namespaces. All of these graphs use default internal color maps. Suppose I declare a graph in namespace A. In another namespace, say namespace B, I attempt to invoke a DFS using the named parameter version of the call specifying only the visitor and defaulting the rest of the parameters. Specifically, I do not specify the color map in the named parameter list. What I expected was that the DFS would find, and use the default internal color map of the graph declared in namespace A. However, it appears that it does not and allocates a temporary color map (I assume the compiler searches namespace B, not A). Subsequently when DFS attempts to initialize the color map to white, a fault occurs at runtime (I haven't had time to get into the guts of DFS and figure out exactly why this bombs yet). I've worked around this by using the standard (sans named parameters) version of the DFS call (explicitly passing in a reference to the internal color map). This seeming interaction between the named parameter mechanism and namespaces is pretty subtle - if not for the runtime fault, I would likely have never noticed that the internal property map wasn't being used during the search. Has anyone else seen this? - Chris

2 3

RE: [Boost-Users] shared_ptr - no throw requirement
by Glen Knowles 19 Aug '03

19 Aug '03

From: Victor A. Wagner, Jr. [mailto:vawjr@rudbek.com] >At Monday 2003-08-18 14:43, you wrote: >>What's the rational for the requirement that ~pointee() be no throw? Instead >>of nothrow could it have been specified that shared_ptr functions throw only >>if ~pointee() throws? >> >>This is also something that could go in the docs (assuming I didn't simply >>miss it). > >the ramifications of having any destructor throw are too horrible to >contemplate. >Well, maybe not "too horrible" but several articles have been written on >the ensuing problems. This may be true, and I have read a few articles on the subject, but "too horrible to comtemplate" isn't exactly a rational. A simple statement in the common requirements that it is deemed too error prone would be helpful. Glen [Non-text portions of this message have been removed]

2 1

shared_ptr - no throw requirement
by Glen Knowles 18 Aug '03

18 Aug '03

What's the rational for the requirement that ~pointee() be no throw? Instead of nothrow could it have been specified that shared_ptr functions throw only if ~pointee() throws? This is also something that could go in the docs (assuming I didn't simply miss it). Thanks, Glen [Non-text portions of this message have been removed]

2 1

RE: [Boost-Users] RE: [date_time] library binaries for VC7.1? && Comm on lib placement
by Administrator 18 Aug '03

18 Aug '03

Dan, At least, so far, it only allows for debug/non-debug tagging. Right now, I'm starting to get involved over on the Boost.Build <http://groups.yahoo.com/group/jamboost/> mailing list. We'll see exactly how things pan out, although I doubt there will be any major changes for a little while. Dale > -----Original Message----- > From: Dan Muller [mailto:yg-boost-users@m.gmane.org] > Sent: Monday, August 18, 2003 6:00 AM > To: boost-users(a)yahoogroups.com > Subject: [Boost-Users] RE: [date_time] library binaries for VC7.1? && > Comm on lib placement > > > In article <41B553DE6D81D5119AD90050DA7ACF702E62E6@PDCSERVER>, > administrator(a)sbcltd.com says... > > Dan, > > > > The date_time.lib library is a static lib. The built > date_time.dll actually > > has no exports in it, so for VC purposes is useless. I > would say don't > > worry about it, and just use the static lib. > > Thanks, Dale, this is exactly what I needed to know. I was > starting to > worry that I didn't understand DUMPBIN's output, which would be > worrisome since I've been using it for years. :-) > > > On a side note, has anyone been working on placing built > items into a common > > directory, say <boost_top_dir>/lib? > > > > If not, I have a patch that should help alot. > > Sounds like an excellent idea. I'm assuming that on Windows, > the boost > build would then follow common conventions so that libraries > built with > different characteristics (debug vs. non-debug, multi- vs. single- > threaded, etc) had different names. (I haven't been following boost > build developments lately -- is this a topic of ongoing changes?) > > > > > > -----Original Message----- > > > From: Dan Muller [mailto:yg-boost-users@m.gmane.org] > [text elided] > > > > > > After building boost for VC7.1, I find a .lib file in > > > boost_1_30_0\libs\date_time\build\bin\libboost_date_time.lib\m > > > svc\debug > > > \runtime-link-dynamic and a .dll in > boost_1_30_0\libs\date_time\build > > > \bin\boost_date_time.dll\msvc\debug\runtime-link-dynamic. > > > > > > There are a couple of things that I don't understand about > > > these files. > > > > > > Is the .lib file supposed to be the import library for the > > > .dll? Linking > > > against the .lib file hasn't produced any import references in my > > > applications. Perhaps I'm just not hitting any out-of-line > > > functionality, but it sure seems like the .lib file is a > > > static library > > > rather than an import library. > > > > > > Also, running DUMPBIN /EXPORTS on the .dll file shows no exported > > > symbols related to date_time classes, as far as I can > see. It really > > > looks like it's exporting a bunch of stuff related to the > > > standard C++ > > > library, which makes no sense to me. > > > > > -- > Dan Muller > "So that's what an invisible barrier looks like!" (Time Bandits) > > > > ------------------------ Yahoo! Groups Sponsor > ---------------------~--> > Buy Ink Cartridges or Refill Kits for Your HP, Epson, Canon or Lexmark > Printer at Myinks.com. Free s/h on orders $50 or more to the > US & Canada. http://www.c1tracking.com/l.asp?cid=5511 > http://us.click.yahoo.com/l.m7sD/LIdGAA/qnsNAA/EbFolB/TM > -------------------------------------------------------------- > -------~-> > > Info: <http://www.boost.org> > Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> > Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> > > > Your use of Yahoo! Groups is subject to > http://docs.yahoo.com/info/terms/ > >

2 1

augmented_crc problem with gcc 3.1 and 3.2
by Raoul Gough 18 Aug '03

18 Aug '03

Hi, I've just noticed that my usage of boost::augmented_crc has stopped working since upgrading to gcc 3.x. The problem turns out to be with the workaround extra parameter BOOST_ACRC_DUMMY_PARM_TYPE*. The usage (in crc.hpp) looks like this: template < std::size_t Bits, BOOST_CRC_PARM_TYPE TruncPoly > typename uint_t<Bits>::fast augmented_crc( void const *buffer, std::size_t byte_count, typename uint_t<Bits>::fast initial_remainder BOOST_ACRC_DUMMY_PARM_TYPE ); Which doesn't supply a default value for the fourth parameter (i.e. it really requires all four parameters). Curiously, there is a BOOST_ACRC_DUMMY_INIT defined, which would supply a default value, but it is never used. Is this a bug in crc.hpp? *This happens for gcc 3.1 and 3.2 because config/compiler/gcc.hpp sets BOOST_NO_EXPLICIT_FUNCTION_TEMPLATE_ARGUMENTS to work around a known bug in those versions. -- Raoul Gough "Let there be one measure for wine throughout our kingdom, and one measure for ale, and one measure for corn" - Magna Carta

1 0

bgl compile problem with vc++ 7.1
by Stephan Höfer 18 Aug '03

18 Aug '03

Hello, I've checked out the newest version of boost from the cvs directory on boost-consulting.com. I've tried to recompile my bgl program to be able to use the latest changes of the bgl code. The compilation progress finished with the following error code: ..\..\..\boost\boost\graph\properties.hpp(169) : error C2248: 'boost::detail::subgraph_property_generator::bind_<SubGraph,Property,Tag>::type' : cannot access private typedef declared in class 'boost::detail::subgraph_property_generator::bind_<SubGraph,Property,Tag>' with [ SubGraph=boost::subgraph<boost::adjacency_list<boost::vecS,boost::vecS,boost::undirectedS,VertexProperty,EdgeProperty>>, Property=boost::detail::vertex_property_map<boost::subgraph<boost::adjacency_list<boost::vecS,boost::vecS,boost::undirectedS,VertexProperty,EdgeProperty>>,vertex_point_t>::Property, Tag=vertex_point_t ] and [ SubGraph=boost::subgraph<boost::adjacency_list<boost::vecS,boost::vecS,boost::undirectedS,VertexProperty,EdgeProperty>>, Property=boost::detail::vertex_property_map<boost::subgraph<boost::adjacency_list<boost::vecS,boost::vecS,boost::undirectedS,VertexProperty,EdgeProperty>>,vertex_point_t>::Property, Tag=vertex_point_t ] Cheers, Stephan [Non-text portions of this message have been removed]

2 1

[Q] Boost-Build V2
by Chris Drexler 18 Aug '03

18 Aug '03

Dear Listmembers, since a few weeks I'm using boost within a development system which should be changed towards operating system independence. As boost-buil V2 has a lot of nice features I wanted to base the build process on it. Unfortunatly it's very confusing to get all the information I need and sometimes it is not clear to which boost-build version (v1 or v2) some documentation belongs to. I hope this list is the right place to ask some questions about this. I'm going to describe the my current setup first (which is a little bit longish in order to cover all important points, hopefully) and afterwards I'll explain the problems. The scenario: We have some self-made class libraries which depend on downloaded packages (one is boost). So I thought of using the (usage-)dependency features of boost-build v2 for automatically using the right include paths and the according libraries. (I'm using milestone 6 of boost-build) root | + pkgs + boost_1_30_0 | | | + log4cpp_0.3.4b + include | + lib | + mylib + include | + src | + myapps + testapp + src The idea was to separate the information of which package versions to use and where libraries and include files reside. For this I put a Jamfile into 'pkgs' which consist of the following entries (OS independence not included right now) ------------------------------------------------------------------- project pkgs ; BOOST = boost_1_30_0 ; LOG4CPP = log4cpp-0.3.4b ; # system libraries lib winsock : : <name>Ws2_32.lib ; lib advapi : : <name>Advapi32.lib ; alias all : log4cpp boost ; alias boost : : <include>$(BOOST) ; lib log4cpp : : <file>$(LOG4CPP)/msvc6/log4cpp/Release/log4cpp.lib <variant>release : : <library>winsock <library>advapi ; lib log4cpp : : <file>$(LOG4CPP)/msvc6/log4cpp/Debug/log4cpp.lib <variant>debug : : <library>winsock <library>advapi ; ------------------------------------------------------------------- and the Jamfile in 'root' (where project-root.jam and boost-build.jam resides) contains ------------------------------------------------------------------- project MyProject : default-build debug <link>static ; use-project /pkgs : ./pkgs ; use-project /MyLib: ./mylib ; ------------------------------------------------------------------- The Jamfile in 'mylib' uses several of the libraries defined in 'pkgs' ------------------------------------------------------------------- project MyLib : usage-requirements <include>./include : requirements <include>./include : source-location ./src ; LIBSRC = [ .. whatever ..] ; lib MyLib : $(LIBSRC) : : : <library>/pkgs//log4cpp ; lib MyLib2 : $(LIBSRC) : : : <library>/pkgs//all ; ------------------------------------------------------------------- and the application 'testapp' depends on 'mylib' ------------------------------------------------------------------- project testapp : requirements <library>/MyLib//MyLib : source-location ./src ; exe test : testapp.cpp ; exe test2 : testapp.cpp : : <library>/MyLib//MyLib2 ; ------------------------------------------------------------------- Problems/Questions ================== - I had to put a (empty) 'project-root.jam' file into 'pkgs'. Otherwise I get the error message: error: default build can be specified only in first alternative main target is ../../../pkgs/log4cpp Any ideas why this happens? - the library dependcies for 'log4cpp' are correct and the appropriate library is linked BUT the include depencies are not used (neither for boost nor for log4cpp). I had to add the paths once more into the Jamfile in 'root' to make them available. After the changes the Jamfile looks like this ------------------------------------------------------------------- BOOST = pkgs/boost_1_30_0 ; LOG4CPP = pkgs/log4cpp-0.3.4b ; project MyProject : default-build debug <link>static : requirements <include>$(BOOST) <include>$(LOG4CPP)/include ; use-project /pkgs : ./pkgs ; use-project /MyLib: ./mylib ; ------------------------------------------------------------------- This is not what I wanted because now the paths to the package directies appear twice, once in root/Jamfile and once in root/pkgs/Jamfile. Thanks you very much ! Best Regards, Chris Drexler

2 3

RE: [Boost-Users] [date_time] library binaries for VC7.1? && Comm on lib placement
by Administrator 18 Aug '03

18 Aug '03

Dan, The date_time.lib library is a static lib. The built date_time.dll actually has no exports in it, so for VC purposes is useless. I would say don't worry about it, and just use the static lib. On a side note, has anyone been working on placing built items into a common directory, say <boost_top_dir>/lib? If not, I have a patch that should help alot. Dale > -----Original Message----- > From: Dan Muller [mailto:yg-boost-users@m.gmane.org] > Sent: Thursday, August 14, 2003 11:38 AM > To: boost-users(a)yahoogroups.com > Subject: [Boost-Users] [date_time] library binaries for VC7.1? > > > I've been using boost for a while, but now for the first time > I'm using > a component that isn't entirely header-based, namely > date_time in boost > 1.30.0. > > After building boost for VC7.1, I find a .lib file in > boost_1_30_0\libs\date_time\build\bin\libboost_date_time.lib\m > svc\debug > \runtime-link-dynamic and a .dll in boost_1_30_0\libs\date_time\build > \bin\boost_date_time.dll\msvc\debug\runtime-link-dynamic. > > There are a couple of things that I don't understand about > these files. > > Is the .lib file supposed to be the import library for the > .dll? Linking > against the .lib file hasn't produced any import references in my > applications. Perhaps I'm just not hitting any out-of-line > functionality, but it sure seems like the .lib file is a > static library > rather than an import library. > > Also, running DUMPBIN /EXPORTS on the .dll file shows no exported > symbols related to date_time classes, as far as I can see. It really > looks like it's exporting a bunch of stuff related to the > standard C++ > library, which makes no sense to me. > > Can anyone clear up my confusion? > > -- > Dan Muller > "So that's what an invisible barrier looks like!" (Time Bandits) > > > > ------------------------ Yahoo! Groups Sponsor > ---------------------~--> > Buy Ink Cartridges or Refill Kits for Your HP, Epson, Canon or Lexmark > Printer at Myinks.com. Free s/h on orders $50 or more to the > US & Canada. http://www.c1tracking.com/l.asp?cid=5511 > http://us.click.yahoo.com/l.m7sD/LIdGAA/qnsNAA/EbFolB/TM > -------------------------------------------------------------- > -------~-> > > Info: <http://www.boost.org> > Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> > Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> > > > Your use of Yahoo! Groups is subject to > http://docs.yahoo.com/info/terms/ > >

5 5

Type Traits
by Hossein Haeri 18 Aug '03

18 Aug '03

Hi friends, I'm looking for some stuff like the Loki::TypeTraits. I presume that there should be some similar ones in the boost repository. If I'm right, please tell me where they are. Thanks, --Hossein __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com

4 5

uClibc and Boost
by codeazure 18 Aug '03

18 Aug '03

Has anyone had success using Boost with the uClibc libraries? In particular, have you got Boost.Python to work? I am using the getting_started1.cpp example provided with Boost. I am using Boost 1.30.0, uClibc 0.9.20 and Python 2.2.3. Note that uClibc does not currently support a dlopen() called library calling a dlopen(). I have found that as long as the library is loaded with Python, I can get it to work. I am currently using the SSL version of the socket module, which is using SSL libraries linked against Python. I have tried 2 techniques so far, but both result in core dumps. 1. Compile Python against uClibc and force linking with libboost_python.so 2. Compile Pyhton against uClibc only. Build Boost application by linking against libboost_python.a so no external library is needed. It may be that the 2 libraries are simply not compatible at this stage. Does anyone have any ideas? David Abrahams has suggested low level debugging to work out what is causing the core dump, but if the problem lies deep within uClibc, then I have a problem. Regards, Jeff Gray

2 1

Variant library or alternative suggestion
by vivek_arora 17 Aug '03

17 Aug '03

Whats is the status of the variant library which was supposed to have been approved for inclusion? I was unable to compile the code submitted for review. Are there any alternative ways/libraries for representing typesafe unions ? thanks -Vivek Arora

3 2

newbie metaprogramming question
by Istvan Buki 17 Aug '03

17 Aug '03

Hello Boost experts, I'm starting learning about template metaprogramming and I discovered that Boost provide several libraries in that area. I tried to see if those libraries could be used for a piece of code I have in my mind but I have a hard time figuring out how to start with it. I don't know if it is because I try to apply metaprogramming techniques in a use case where they doesn't fit or because of my lack of experience with these tools. I'm posting my use case here to get some help and advice about it. In a library I provide two classes: 1) An abstract base class (let's call it Base) from which user will derive their own classes. 2) A manager class responsible for manipulating instances of classes derived from Base. The user, in his application, create an an arbitrary number of classes derived from Base. Let's call them A, B and C for example. He create a typelist containing all those classes and passes it as a parameter to the manager class: typedef boost::mpl::list< A, B, C > my_types ; typedef Manager< my_types> my_manager ; When an instance of my_manager is created I would like to automatically create one instance of each type present in the typelist and these instances should be stored in a container where I could access them later. Something like the following: template < class Typelist > class Manager { public: Manager( void ) ; // ..... private: std::vector< Base * > container_ ; // .... } ; template < class Typelist > Manager< Typelist >::Manager( void ) { // This is not C++, it is pseudo-code that shows what I would // like to achieve. FOR EACH Typelist item i DO Base *b = new Typelist[i] container_.push_back( b ) ; END } So, at compile-time, some code should be generated to do what I wrote in pseudo-code in the constructor of Manager. Does this make any sense ? And if it is, could someone help me transform transform the pseudo-code in the constructor of manager to real code ? Thanks for any help you could provide, Istvan

1 0

Errors building boost w/ VC++ 6.0 sp5
by Michael H. Cox 17 Aug '03

17 Aug '03

I downloaded boost_1_30_0.zip, unpacked the zip file, cd'ed into boost_1_30_0, and ran "bjam "-sTOOLS=msvc". Most of the library seemd to compile fine (Python was skipped since I didn't have it installed). Bjam failed to update 12 targets, skipped 12 targets (the same 12 that failed?), and updated 452 targets. The error messages at the end were: ...failed vc-Link libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\run time-link-dynamic\threading-single\boost_test_exec_monitor.dll libs\test\build\b in\boost_test_exec_monitor.dll\msvc\debug\runtime-link-dynamic\threading-sin gle\ boost_test_exec_monitor.lib... ...skipped <libs!test!build\boost_test_exec_monitor.dll\msvc\debug\runtime-link- dynamic\threading-single>boost_test_exec_monitor.dll for lack of <libs!test!buil d\boost_test_exec_monitor.dll\msvc\debug\runtime-link-dynamic\threading-sing le>b oost_test_exec_monitor.lib... MkDir1 libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\runtime-link-d ynamic\threading-multi vc-C++ libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\runtime-link-d ynamic\threading-multi\execution_monitor.obj execution_monitor.cpp vc-C++ libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\runtime-link-d ynamic\threading-multi\test_tools.obj test_tools.cpp vc-C++ libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\runtime-link-d ynamic\threading-multi\unit_test_parameters.obj unit_test_parameters.cpp vc-C++ libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\runtime-link-d ynamic\threading-multi\unit_test_log.obj unit_test_log.cpp vc-C++ libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\runtime-link-d ynamic\threading-multi\unit_test_monitor.obj unit_test_monitor.cpp vc-C++ libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\runtime-link-d ynamic\threading-multi\unit_test_result.obj unit_test_result.cpp vc-C++ libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\runtime-link-d ynamic\threading-multi\unit_test_suite.obj unit_test_suite.cpp vc-C++ libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\runtime-link-d ynamic\threading-multi\test_main.obj test_main.cpp vc-Link libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\runtime-link- dynamic\threading-multi\boost_test_exec_monitor.dll libs\test\build\bin\boost_te st_exec_monitor.dll\msvc\debug\runtime-link-dynamic\threading-multi\boost_te st_e xec_monitor.lib test_main.obj : error LNK2001: unresolved external symbol "int __cdecl test_main (int,char * * const)" (?test_main@@YAHHQAPAD@Z) libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\runtime-link-dyna mic\ threading-multi\boost_test_exec_monitor.dll : fatal error LNK1120: 1 unresolved externals CALL "C:\Program Files\Microsoft Visual Studio\VC98\bin\VCVARS32.BAT" >nul "C:\Program Files\Microsoft Visual Studio\VC98\bin\link" /nologo /INCREMENT AL:NO /DEBUG /DLL /subsystem:console /out:"libs\test\build\bin\boost_test_exe c_monitor.dll\msvc\debug\runtime-link-dynamic\threading-multi\boost_test_exe c_mo nitor.dll" /IMPLIB:"libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\ runtime-link-dynamic\threading-multi\boost_test_exec_monitor.lib" @"libs\tes t\build\bin\boost_test_exec_monitor.dll\msvc\debug\runtime-link-dynamic\thre adin g-multi\boost_test_exec_monitor.CMD" ...failed vc-Link libs\test\build\bin\boost_test_exec_monitor.dll\msvc\debug\run time-link-dynamic\threading-multi\boost_test_exec_monitor.dll libs\test\build\bi n\boost_test_exec_monitor.dll\msvc\debug\runtime-link-dynamic\threading-mult i\bo ost_test_exec_monitor.lib... ...skipped <libs!test!build\boost_test_exec_monitor.dll\msvc\debug\runtime-link- dynamic\threading-multi>boost_test_exec_monitor.dll for lack of <libs!test!build \boost_test_exec_monitor.dll\msvc\debug\runtime-link-dynamic\threading-multi >boo st_test_exec_monitor.lib... MkDir1 libs\test\build\bin\boost_unit_test_framework.dll MkDir1 libs\test\build\bin\boost_unit_test_framework.dll\msvc MkDir1 libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug MkDir1 libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static MkDir1 libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-single vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-single\execution_monitor.obj execution_monitor.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-single\test_tools.obj test_tools.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-single\unit_test_parameters.obj unit_test_parameters.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-single\unit_test_log.obj unit_test_log.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-single\unit_test_monitor.obj unit_test_monitor.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-single\unit_test_result.obj unit_test_result.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-single\unit_test_suite.obj unit_test_suite.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-single\unit_test_main.obj unit_test_main.cpp vc-Link libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-lin k-static\threading-single\boost_unit_test_framework.dll libs\test\build\bin\boos t_unit_test_framework.dll\msvc\debug\runtime-link-static\threading-single\bo ost_ unit_test_framework.lib unit_test_main.obj : error LNK2001: unresolved external symbol "class boost::uni t_test_framework::test_suite * __cdecl init_unit_test_suite(int,char * * const)" (?init_unit_test_suite@@YAPAVtest_suite@unit_test_framework@boost@@HQAPAD@Z) libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link-st atic \threading-single\boost_unit_test_framework.dll : fatal error LNK1120: 1 unresol ved externals CALL "C:\Program Files\Microsoft Visual Studio\VC98\bin\VCVARS32.BAT" >nul "C:\Program Files\Microsoft Visual Studio\VC98\bin\link" /nologo /INCREMENT AL:NO /DEBUG /DLL /subsystem:console /out:"libs\test\build\bin\boost_unit_tes t_framework.dll\msvc\debug\runtime-link-static\threading-single\boost_unit_t est_ framework.dll" /IMPLIB:"libs\test\build\bin\boost_unit_test_framework.dll\msvc\ debug\runtime-link-static\threading-single\boost_unit_test_framework.lib" @" libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link-st atic \threading-single\boost_unit_test_framework.CMD" ...failed vc-Link libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\r untime-link-static\threading-single\boost_unit_test_framework.dll libs\test\buil d\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link-static\threading -sin gle\boost_unit_test_framework.lib... ...skipped <libs!test!build\boost_unit_test_framework.dll\msvc\debug\runtime-lin k-static\threading-single>boost_unit_test_framework.dll for lack of <libs!test!b uild\boost_unit_test_framework.dll\msvc\debug\runtime-link-static\threading- sing le>boost_unit_test_framework.lib... MkDir1 libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-multi vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-multi\execution_monitor.obj execution_monitor.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-multi\test_tools.obj test_tools.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-multi\unit_test_parameters.obj unit_test_parameters.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-multi\unit_test_log.obj unit_test_log.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-multi\unit_test_monitor.obj unit_test_monitor.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-multi\unit_test_result.obj unit_test_result.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-multi\unit_test_suite.obj unit_test_suite.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -static\threading-multi\unit_test_main.obj unit_test_main.cpp vc-Link libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-lin k-static\threading-multi\boost_unit_test_framework.dll libs\test\build\bin\boost _unit_test_framework.dll\msvc\debug\runtime-link-static\threading-multi\boos t_un it_test_framework.lib unit_test_main.obj : error LNK2001: unresolved external symbol "class boost::uni t_test_framework::test_suite * __cdecl init_unit_test_suite(int,char * * const)" (?init_unit_test_suite@@YAPAVtest_suite@unit_test_framework@boost@@HQAPAD@Z) libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link-st atic \threading-multi\boost_unit_test_framework.dll : fatal error LNK1120: 1 unresolv ed externals CALL "C:\Program Files\Microsoft Visual Studio\VC98\bin\VCVARS32.BAT" >nul "C:\Program Files\Microsoft Visual Studio\VC98\bin\link" /nologo /INCREMENT AL:NO /DEBUG /DLL /subsystem:console /out:"libs\test\build\bin\boost_unit_tes t_framework.dll\msvc\debug\runtime-link-static\threading-multi\boost_unit_te st_f ramework.dll" /IMPLIB:"libs\test\build\bin\boost_unit_test_framework.dll\msvc\d ebug\runtime-link-static\threading-multi\boost_unit_test_framework.lib" @"li bs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link-stat ic\t hreading-multi\boost_unit_test_framework.CMD" ...failed vc-Link libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\r untime-link-static\threading-multi\boost_unit_test_framework.dll libs\test\build \bin\boost_unit_test_framework.dll\msvc\debug\runtime-link-static\threading- mult i\boost_unit_test_framework.lib... ...skipped <libs!test!build\boost_unit_test_framework.dll\msvc\debug\runtime-lin k-static\threading-multi>boost_unit_test_framework.dll for lack of <libs!test!bu ild\boost_unit_test_framework.dll\msvc\debug\runtime-link-static\threading-m ulti >boost_unit_test_framework.lib... MkDir1 libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic MkDir1 libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-single vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-single\execution_monitor.obj execution_monitor.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-single\test_tools.obj test_tools.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-single\unit_test_parameters.obj unit_test_parameters.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-single\unit_test_log.obj unit_test_log.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-single\unit_test_monitor.obj unit_test_monitor.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-single\unit_test_result.obj unit_test_result.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-single\unit_test_suite.obj unit_test_suite.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-single\unit_test_main.obj unit_test_main.cpp vc-Link libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-lin k-dynamic\threading-single\boost_unit_test_framework.dll libs\test\build\bin\boo st_unit_test_framework.dll\msvc\debug\runtime-link-dynamic\threading-single\ boos t_unit_test_framework.lib unit_test_main.obj : error LNK2001: unresolved external symbol "class boost::uni t_test_framework::test_suite * __cdecl init_unit_test_suite(int,char * * const)" (?init_unit_test_suite@@YAPAVtest_suite@unit_test_framework@boost@@HQAPAD@Z) libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link-dy nami c\threading-single\boost_unit_test_framework.dll : fatal error LNK1120: 1 unreso lved externals CALL "C:\Program Files\Microsoft Visual Studio\VC98\bin\VCVARS32.BAT" >nul "C:\Program Files\Microsoft Visual Studio\VC98\bin\link" /nologo /INCREMENT AL:NO /DEBUG /DLL /subsystem:console /out:"libs\test\build\bin\boost_unit_tes t_framework.dll\msvc\debug\runtime-link-dynamic\threading-single\boost_unit_ test _framework.dll" /IMPLIB:"libs\test\build\bin\boost_unit_test_framework.dll\msvc \debug\runtime-link-dynamic\threading-single\boost_unit_test_framework.lib" @"libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link- dyna mic\threading-single\boost_unit_test_framework.CMD" ...failed vc-Link libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\r untime-link-dynamic\threading-single\boost_unit_test_framework.dll libs\test\bui ld\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link-dynamic\threadi ng-s ingle\boost_unit_test_framework.lib... ...skipped <libs!test!build\boost_unit_test_framework.dll\msvc\debug\runtime-lin k-dynamic\threading-single>boost_unit_test_framework.dll for lack of <libs!test! build\boost_unit_test_framework.dll\msvc\debug\runtime-link-dynamic\threadin g-si ngle>boost_unit_test_framework.lib... MkDir1 libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-multi vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-multi\execution_monitor.obj execution_monitor.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-multi\test_tools.obj test_tools.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-multi\unit_test_parameters.obj unit_test_parameters.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-multi\unit_test_log.obj unit_test_log.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-multi\unit_test_monitor.obj unit_test_monitor.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-multi\unit_test_result.obj unit_test_result.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-multi\unit_test_suite.obj unit_test_suite.cpp vc-C++ libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link -dynamic\threading-multi\unit_test_main.obj unit_test_main.cpp vc-Link libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-lin k-dynamic\threading-multi\boost_unit_test_framework.dll libs\test\build\bin\boos t_unit_test_framework.dll\msvc\debug\runtime-link-dynamic\threading-multi\bo ost_ unit_test_framework.lib unit_test_main.obj : error LNK2001: unresolved external symbol "class boost::uni t_test_framework::test_suite * __cdecl init_unit_test_suite(int,char * * const)" (?init_unit_test_suite@@YAPAVtest_suite@unit_test_framework@boost@@HQAPAD@Z) libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link-dy nami c\threading-multi\boost_unit_test_framework.dll : fatal error LNK1120: 1 unresol ved externals CALL "C:\Program Files\Microsoft Visual Studio\VC98\bin\VCVARS32.BAT" >nul "C:\Program Files\Microsoft Visual Studio\VC98\bin\link" /nologo /INCREMENT AL:NO /DEBUG /DLL /subsystem:console /out:"libs\test\build\bin\boost_unit_tes t_framework.dll\msvc\debug\runtime-link-dynamic\threading-multi\boost_unit_t est_ framework.dll" /IMPLIB:"libs\test\build\bin\boost_unit_test_framework.dll\msvc\ debug\runtime-link-dynamic\threading-multi\boost_unit_test_framework.lib" @" libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link-dy nami c\threading-multi\boost_unit_test_framework.CMD" ...failed vc-Link libs\test\build\bin\boost_unit_test_framework.dll\msvc\debug\r untime-link-dynamic\threading-multi\boost_unit_test_framework.dll libs\test\buil d\bin\boost_unit_test_framework.dll\msvc\debug\runtime-link-dynamic\threadin g-mu lti\boost_unit_test_framework.lib... ...skipped <libs!test!build\boost_unit_test_framework.dll\msvc\debug\runtime-lin k-dynamic\threading-multi>boost_unit_test_framework.dll for lack of <libs!test!b uild\boost_unit_test_framework.dll\msvc\debug\runtime-link-dynamic\threading -mul ti>boost_unit_test_framework.lib... vc-Link libs\thread\build\bin\boost_thread.dll\msvc\debug\runtime-link-dynamic\t hreading-multi\boost_thread.dll libs\thread\build\bin\boost_thread.dll\msvc\debu g\runtime-link-dynamic\threading-multi\boost_thread.lib Creating library libs\thread\build\bin\boost_thread.dll\msvc\debug\runtime-li nk-dynamic\threading-multi\boost_thread.lib and object libs\thread\build\bin\boo st_thread.dll\msvc\debug\runtime-link-dynamic\threading-multi\boost_thread.e xp ...failed updating 12 targets... ...skipped 12 targets... ...updated 452 targets... C:\boost_1_30_0> Any ideas what I need to do to get it to build properly? Mike mhcox AT ampmed DOT com

3 9

RE: [Boost-Users] Boost::lambda: Why the following code would not compile?
by Ioffe, Robert 15 Aug '03

15 Aug '03

The following code works: #include <string> #include <map> #include <vector> #include <iterator> #include "boost/lambda/lambda.hpp" #include "boost/lambda/bind.hpp" #include "boost/lambda/algorithm.hpp" using namespace boost::lambda; using namespace std; int main() { string s; typedef map<string, int> counters_t; typedef counters_t::value_type counters_value_t; counters_t counters; typedef map<int, vector<string> > occurences_t; typedef occurences_t::value_type occurences_value_t; occurences_t number_of_occurences; while(cin >> s) ++counters[s]; for(map<string, int>::const_iterator it = counters.begin(); it != counters.end(); ++it) number_of_occurences[it->second].push_back(it->first); std::for_each(number_of_occurences.begin(), number_of_occurences.end(), (cout << bind(&occurences_value_t::first, _1) << ":\t" && true, bind(ll::for_each(), bind(call_begin(), bind(&occurences_value_t::second, _1)), bind(call_end(), bind(&occurences_value_t::second, _1)), protect(cout << _1 << " ")), cout << constant("\n") && true)); return 0; } -----Original Message----- From: Ioffe, Robert Sent: Friday, August 15, 2003 12:24 PM To: boost-users(a)yahoogroups.com Subject: [Boost-Users] Boost::lambda: Why the following code would not compile? The following code would not compile, since it complains about trying to copy cout. Any comments? Robert #include <string> #include <map> #include <vector> #include <iterator> #include "boost/lambda/lambda.hpp" #include "boost/lambda/bind.hpp" #include "boost/lambda/algorithm.hpp" using namespace boost::lambda; using namespace std; int main() { string s; typedef map<string, int> counters_t; typedef counters_t::value_type counters_value_t; counters_t counters; typedef map<int, vector<string> > occurences_t; typedef occurences_t::value_type occurences_value_t; occurences_t number_of_occurences; while(cin >> s) ++counters[s]; for(map<string, int>::const_iterator it = counters.begin(); it != counters.end(); ++it) number_of_occurences[it->second].push_back(it->first); std::for_each(number_of_occurences.begin(), number_of_occurences.end(), (cout << bind(&occurences_value_t::first, _1) << ":\t", bind(ll::for_each(), bind(call_begin(), bind(&occurences_value_t::second, _1)), bind(call_end(), bind(&occurences_value_t::second, _1)), protect(cout << _1 << " ")), cout << "\n")); return 0; } [Non-text portions of this message have been removed] Info: <http://www.boost.org> Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

1 0

Boost::lambda: Why the following code would not compile?
by Ioffe, Robert 15 Aug '03

15 Aug '03

The following code would not compile, since it complains about trying to copy cout. Any comments? Robert #include <string> #include <map> #include <vector> #include <iterator> #include "boost/lambda/lambda.hpp" #include "boost/lambda/bind.hpp" #include "boost/lambda/algorithm.hpp" using namespace boost::lambda; using namespace std; int main() { string s; typedef map<string, int> counters_t; typedef counters_t::value_type counters_value_t; counters_t counters; typedef map<int, vector<string> > occurences_t; typedef occurences_t::value_type occurences_value_t; occurences_t number_of_occurences; while(cin >> s) ++counters[s]; for(map<string, int>::const_iterator it = counters.begin(); it != counters.end(); ++it) number_of_occurences[it->second].push_back(it->first); std::for_each(number_of_occurences.begin(), number_of_occurences.end(), (cout << bind(&occurences_value_t::first, _1) << ":\t", bind(ll::for_each(), bind(call_begin(), bind(&occurences_value_t::second, _1)), bind(call_end(), bind(&occurences_value_t::second, _1)), protect(cout << _1 << " ")), cout << "\n")); return 0; } [Non-text portions of this message have been removed]

1 0

How to build my projects based on boost_python libraries using visual c++7.0
by shunm_fang 15 Aug '03

15 Aug '03

Hello, I am newbie to boost.python. Currently, I have a projects to wrap our c++ code to python module using boost_python. I download boost_1_19_0 and built it in .net, now I want to test the libraries is right or not, I try to build the hello module in the example, but fail, it saying that: c:\Program Files\Microsoft Visual Studio .NET\Vc7\include\cstdio (15): error C2059: syntax error : ':' any trick about it

1 0

[BGL] write_graphviz error
by Micha Bieber 15 Aug '03

15 Aug '03

The following bug exists also as sourceforge bug request: [ 778394 ] GraphViz Interface boost version is 1.30.0 Because Jeremy seems to be reactivated and the sourceforge tracker status is still 'open' a small reminder: For an adjacency list of the following form adjacency_list<listS, listS, undirectedS, PositionProperty> write_graphviz produces the following graph structure --- output begin --- graph G { graph [splines=false bgcolor=lightgrey] node [shape=circle color=red] edge [style=solid] 002F48A0[label ="", height="0.1", pos="540,250"]; 002F4978[label ="", height="0.1", pos="278,321"]; 002F4A50[label ="", height="0.1", pos="198,67"]; 002F4B28[label ="", height="0.1", pos="163,27"]; 002F4C00[label ="", height="0.1", pos="442,487"]; 002F4B28--002F4A50 ; 002F4A50--002F4978 ; 002F4978--002F4B28 ; 002F4B28--002F48A0 ; 002F48A0--002F4A50 ; 002F4978--002F48A0 ; 002F48A0--002F4C00 ; 002F4C00--002F4978 ; } --- output end --- This causes error messages from neato (GraphViz tool): --- error messages begin -- v:\my\delaunay\test\d1\output>neato -s72 -n2 -Tgif -o file.gif delaunay.dot Warning: delaunay.dot:5: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:6: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:7: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:8: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:9: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:10: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:10: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:11: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:11: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:12: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:12: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:13: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:13: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:14: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:14: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:15: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:15: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:16: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:16: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:17: ambiguous "002F" splits into two names: "002" and "F" Warning: delaunay.dot:17: ambiguous "002F" splits into two names: "002" and "F" Error: node 002 in graph G has no position as required by the -n flag v:\my\delaunay\test\d1\output> --- error messages end --- The reason can be found at: http://www.research.att.com/~erg/graphviz/info/lang.html "An ID is any string of alphabetic characters, underscores or digits, but not beginning with a digit; or a number; or any quoted string possibly containing escaped quotes." So, the hexadecimal number (mix of digits and characters) of the transfered pointer (list item) is the problem.I would suggest write_graph_viz quotes the node name or prefixes with a character or uses a decimal representation. Regards, Micha

2 1

Graph component question
by Stefan Slapeta 15 Aug '03

15 Aug '03

Hi all, finding edges of cycles in a directed graph is a solved problem and done by the strong_components algorithm. Is there also any a good solution for finding the path (= the exact sequence of vertices) that encloses a strong component? (Note that in a strong component there can be also smaller subcycles that are not of interest.) With other words: I want to find the way through a strong component that visits all its edges. Thanks in advance! Stefan

3 2

Using shared_ptr<> with boost::lamda
by limaxtt 15 Aug '03

15 Aug '03

shared_ptr<> can't be easily used in lambda expressions, because there is no operator->* defined. So, there are two problems in two different libraries: 1) operator->* needs to be added to Smart Pointers library. It can be easily done for data-members, but not for methods, since it includes return type deduction from template parameters. So there is another problem: 2) boost::function_traits<> from Type Traits library (result_type particulary) does not work for class methods.

1 0

[Patch] Boost Jamfiles
by Administrator 15 Aug '03

15 Aug '03

The following changelog and patch do three things: 1. Change to common naming scheme for libs 2. Common subdir for compiled libs 3. Test and date_time dll's suppressed for NT builds. Would appreciate any and all feedback on this patch. Thanks. Dale Hirt Changelog: ---------- 2003-08-14 17:40 pm Dale Hirt <administrator(a)sbcltd.com> Jamfile * Added in boost-stage-tag rule. This appends a "d" to the end of the lib name if it is being compiled in debug mode, and "_pydebug", if being compiled in debug-python mode. Allows for common naming scheme across entire Boost tree. libs/date_time/build/Jamfile * Changes compilation options so that shared lib is not built if we're on NT. * Adds in stage rule to place libs in common subdir, and also to use common naming scheme per debug builds. libs/filesystem/build/Jamfile * Adds in stage rule to place libs in common subdir, and also to use common naming scheme per debug builds. libs/python/build/Jamfile * Changes stage rule to place libs in common subdir, and also to use common naming scheme per debug and debug-python builds. libs/regex/build/Jamfile * Changes stage rule to place libs in common subdir. libs/signals/build/Jamfile * Changes stage rule to use common naming scheme per debug builds. libs/test/build/Jamfile * Changes compilation options so that shared lib is not built if we're on NT. * Changes stage rule to use common naming scheme per debug builds. libs/thread/build/Jamfile * Changes stage rule to place libs in common subdir, and also to use common naming scheme per debug builds. Patch: -------- Index: Jamfile =================================================================== RCS file: /cvsroot/boost/boost/Jamfile,v retrieving revision 1.7 diff -r1.7 Jamfile 2a3,21 > # Common rules for libs > rule boost-stage-tag ( toolset variant : properties * ) > { > local lib-debug-opt = "" ; > if [ MATCH .*(debug).* : $(variant) ] > { > lib-debug-opt = d ; > } > > local lib-pydebug-opt = "" ; > if [ MATCH .*(debug-python).* : $(variant) ] > { > lib-pydebug-opt = _pydebug ; > lib-debug-opt = "" ; > } > > return $(properties) <tag><$(variant)>$(lib-debug-opt)$(lib-pydebug-opt) ; > } > Index: libs/date_time/build/Jamfile =================================================================== RCS file: /cvsroot/boost/boost/libs/date_time/build/Jamfile,v retrieving revision 1.9 diff -r1.9 Jamfile 24d23 < 29c28,29 < dll boost_date_time : ../src/gregorian/$(CPP_SOURCES).cpp --- > > lib boost_date_time : ../src/gregorian/$(CPP_SOURCES).cpp 34c34,37 < lib boost_date_time : ../src/gregorian/$(CPP_SOURCES).cpp --- > if ! ${NT} > { > > dll boost_date_time : ../src/gregorian/$(CPP_SOURCES).cpp 38a42,55 > stage ../../../lib > : <lib>boost_date_time <dll>boost_date_time > : boost-stage-tag > : debug release > ; > } > else > { > stage ../../../lib > : <lib>boost_date_time > : boost-stage-tag > : debug release > ; > } Index: libs/filesystem/build/Jamfile =================================================================== RCS file: /cvsroot/boost/boost/libs/filesystem/build/Jamfile,v retrieving revision 1.5 diff -r1.5 Jamfile 17c17,24 < ; \ No newline at end of file --- > ; > > stage ../../../lib > : <lib>boost_filesystem > : boost-stage-tag > : debug release > ; > Index: libs/python/build/Jamfile =================================================================== RCS file: /cvsroot/boost/boost/libs/python/build/Jamfile,v retrieving revision 1.29 diff -r1.29 Jamfile 78,83c78,81 < stage bin-stage : <dll>boost_python <lib>boost_python < : <tag><debug>"_debug" < <tag><debug-python>"_pydebug" < : < debug release < ; --- > stage ../../../lib : <dll>boost_python <lib>boost_python > : boost-stage-tag > : debug release > ; Index: libs/regex/build/Jamfile =================================================================== RCS file: /cvsroot/boost/boost/libs/regex/build/Jamfile,v retrieving revision 1.17 diff -r1.17 Jamfile 131c131 < stage bin-stage : <lib>boost_regex <dll>boost_regex --- > stage ../../../lib : <lib>boost_regex <dll>boost_regex Index: libs/signals/build/Jamfile =================================================================== RCS file: /cvsroot/boost/boost/libs/signals/build/Jamfile,v retrieving revision 1.6 diff -r1.6 Jamfile 27,28c27,28 < : <dll>boost_signals < : <tag><debug>"d" --- > : <dll>boost_signals <lib>boost_signals > : boost-stage-tag Index: libs/test/build/Jamfile =================================================================== RCS file: /cvsroot/boost/boost/libs/test/build/Jamfile,v retrieving revision 1.8 diff -r1.8 Jamfile 67a68,92 > stage ../../../lib : > <lib>boost_prg_exec_monitor > <lib>boost_test_exec_monitor > <lib>boost_unit_test_framework > <dll>boost_prg_exec_monitor > <dll>boost_test_exec_monitor > <dll>boost_unit_test_framework > : > boost-stage-tag > : > debug release > ; > } > else > { > stage ../../../lib : > <lib>boost_prg_exec_monitor > <lib>boost_test_exec_monitor > <lib>boost_unit_test_framework > : > boost-stage-tag > : > debug release > ; > Index: libs/thread/build/Jamfile =================================================================== RCS file: /cvsroot/boost/boost/libs/thread/build/Jamfile,v retrieving revision 1.20 diff -r1.20 Jamfile 47c47 < stage bin-stage --- > stage ../../../lib 50c50 < <tag><debug>"d" --- > boost-stage-tag

3 2

FW: Patch File For Common Library Subdir
by Administrator 15 Aug '03

15 Aug '03

Jeff, I do have a patch that will do the trick. It also deals with placing all libs into a common subdir of the root directory. If anyone is interested, let me know. Dale > -----Original Message----- > From: Jeff Garland [mailto:jeff@crystalclearsoftware.com] > Sent: Thursday, August 14, 2003 5:19 PM > To: Boost-Users(a)yahoogroups.com > Subject: RE: [Boost-Users] [date_time] library binaries for VC7.1? && > Comm on lib placement <snip> > > Exactly. I think the problem is that the build appears to be building > a valid .dll. I've wanted to turn this off, but I couldn't > figure out the > jamfile magic to make this happen and ran out of time to > pursue it. It's on > my todo list to fix this, but for now just use the static lib. > > Jeff

1 0

RE: [Boost-Users] Re: Using Boost as a Library Dependency
by Administrator 14 Aug '03

14 Aug '03

Jason, Speaking as someone who downloads and uses lots of open-source libraries, I expect that if another library is required, it will be stated in the documentation, and that it is up to me, the library user, to ensure that paths are correctly set up for my compiler. Just don't forget to include the website where I can download the required libraries. There should be no need to modify any of your (the developer's) library files in order for it to work. Compiler include paths are very easy to set up, both on Unix, where you would use something like autoconf to help set everything up, and on Windows, where Visual Studio has a simple directory include dialog box to type into. Again, you (the developer) should only need to state that the library requires another library(i.e. Boost), and me (the user) should be able to deal with it. If I can't, I (the user) actually need to RTFM about my compiler. Dale Hirt > -----Original Message----- > From: Jason Winnebeck [mailto:yg-boost-users@m.gmane.org] > Sent: Thursday, August 14, 2003 5:38 AM > To: boost-users(a)yahoogroups.com > Subject: [Boost-Users] Re: Using Boost as a Library Dependency > > > David Abrahams wrote: > > Jason Winnebeck <yg-boost-users(a)m.gmane.org> writes: > >>What do you want it to do? What is the least you expect it to > >>handle? > > > > > > ?? I don't understand your questions. You're the one with a problem > > that needs to be solved. > > Perhaps I was unclear. I was asking it in the sense of "were you to > download some non-commercial 3rd party library today that required > Boost, what would you reasonably expect to be required to do > to get it > to use your boost?" The next question was sort of a second > one asking > what you would have to do ideally but the answer there is > always nothing > ;). Ideally what I would expect is something where it is very simple > that requires you to type the path to your Boost once and only once. > > > Sure, or you're going to have to tell me about a location that gets > > put in the path used by your makefile so I can drop (a > symlink to) my > > boost tree there. The use of angle-includes is irrelevant to all > > this, at least as far as GCC/mingw are concerned. > > There are no symlinks in Windows. I suppose I can make an "include" > makefile where you place your Boost directory in there. For > some reason > this solution is trivial and I just thought of it. Well that makes > makefiles easy. As for Visual Studio... It's a bit more > complicated I > can look more to see what options I have. I know of at least one > solution if I can't find a better one. > > Jason > > > > > ------------------------ Yahoo! Groups Sponsor > ---------------------~--> > Buy Ink Cartridges or Refill Kits for Your HP, Epson, Canon or Lexmark > Printer at Myinks.com. Free s/h on orders $50 or more to the > US & Canada. http://www.c1tracking.com/l.asp?cid=5511 > http://us.click.yahoo.com/l.m7sD/LIdGAA/qnsNAA/EbFolB/TM > -------------------------------------------------------------- > -------~-> > > Info: <http://www.boost.org> > Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> > Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> > > > Your use of Yahoo! Groups is subject to > http://docs.yahoo.com/info/terms/ > >

1 0

[date_time] library binaries for VC7.1?
by Dan Muller 14 Aug '03

14 Aug '03

I've been using boost for a while, but now for the first time I'm using a component that isn't entirely header-based, namely date_time in boost 1.30.0. After building boost for VC7.1, I find a .lib file in boost_1_30_0\libs\date_time\build\bin\libboost_date_time.lib\msvc\debug \runtime-link-dynamic and a .dll in boost_1_30_0\libs\date_time\build \bin\boost_date_time.dll\msvc\debug\runtime-link-dynamic. There are a couple of things that I don't understand about these files. Is the .lib file supposed to be the import library for the .dll? Linking against the .lib file hasn't produced any import references in my applications. Perhaps I'm just not hitting any out-of-line functionality, but it sure seems like the .lib file is a static library rather than an import library. Also, running DUMPBIN /EXPORTS on the .dll file shows no exported symbols related to date_time classes, as far as I can see. It really looks like it's exporting a bunch of stuff related to the standard C++ library, which makes no sense to me. Can anyone clear up my confusion? -- Dan Muller "So that's what an invisible barrier looks like!" (Time Bandits)

1 0

[BGL] patch to graphviz.hpp (cvs version)
by Angus Leeming 14 Aug '03

14 Aug '03

The following trivial patch is needed to compile write_graphviz from today's CVS. Regards, Angus Index: graphviz.hpp =================================================================== RCS file: /cvsroot/boost/boost/boost/graph/graphviz.hpp,v retrieving revision 1.18 diff -u -p -r1.18 graphviz.hpp --- graphviz.hpp 12 Aug 2003 01:15:37 -0000 1.18 +++ graphviz.hpp 14 Aug 2003 11:15:49 -0000 @@ -249,7 +249,7 @@ namespace boost { GraphPropertiesWriter gpw) { typedef typename property_map<Graph, vertex_index_t>::const_type vimap_t; - vimap_t vertex_index = get(g, vertex_index_t()); + vimap_t vertex_index = get(vertex_index_t(), g); typedef typename graph_traits<Graph>::directed_category cat_type; typedef graphviz_io_traits<cat_type> Traits; std::string name = "G";

2 1

Using Boost as a Library Dependency
by Jason Winnebeck 14 Aug '03

14 Aug '03

I recently decided to refactor my library's API using the benefits given by boost::shared_ptr, so this now means my library uses boost. I'm trying to figure out how my installation process should go. Since I'm only using shared_ptr I've trimmed down a custom boost version that is only a few hundred k (rather than 10 megs) of just the files that I use. I've put the minimum boost files in my own directory structure so that my library can compile on its own. But when using the library, then what would the user do? Ideally I could have the installer for my library by copy the files to the compiler's include directory, but that's not particularly nice, espically since Boost is quite a popular library, and I don't want to litter up their include directory and most espically not overwrite any installation of Boost they have placed there. One thing that might work, if compilers support include directory "overrides" is if the user is using the full Boost library, to place its -I line before (or after?) the -I for my library, so that they can see my includes, but any boost includes will be "overridden" by their full version of Boost. But this leads to another question: If I compile my library with Boost x but the user has Boost y installed when he links with my library (I DO pass shared_ptr back and forth between user code, so it's not just used internally), what will happen? The shared_ptr interface seems to be oft changing, and so right now my code would only compile for Boost 1.30 (or later? Speaking of that, anyone know why there are no files listed for download for Boost 1.30.1 but it was announced a week ago?). I'm new to these things so I appreciate any feedback or answers you have. The library is just an open-source library I'm writing on my own free time, and I don't have a lot of experience from using/installing commercial C++ libraries to draw upon. Jason Winnebeck

5 13

visitors question
by Jérémie Leguay 14 Aug '03

14 Aug '03

Hi! I would like to use the breadth breadth_first_search with simultaneaously 2 different visitors: -the distance recorder one -one of mine I was thinking about a code like: class bfs_my_visitor:public default_bfs_visitor { ... public: bfs_stop_visitor(...) {} template < typename Vertex, typename Graph > void finish_vertex(Vertex u, const Graph & g) const { ... } }; use in: bfs_my_visitor vis(...); breadth_first_search (g,s, visitor(make_bfs_visitor(std::make_pair(record_distances(&d[0],on_tree_edge()), vis ))); But it doesn't work, can you tell the way to combine thoses visitors in the call of breadth_first_search. regards Jérémie leguay Lip6 - Paris ___________________________________________________________ Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en français ! Yahoo! Mail : http://fr.mail.yahoo.com

1 0

Filesystem lib
by ALMAZ_N 13 Aug '03

13 Aug '03

Can someone help me? Has anyone used the above boost Filesystem library on Mac OS X? If you have can you tell me the obstacles you faced and how you overcame them? I am currently including the lib in my windows project and don't seem to have any problems. Thank you Almaz

1 0

Getting std::iterator_category from boost iterator adaptor
by Raoul Gough 13 Aug '03

13 Aug '03

I have a situation where I want to specialize a class template on the basis of iterator_category, but I don't see how to get one of the standard categories when passed a boost iterator adapter. Currently, std::iterator_traits<MyIter>::iterator_category is giving me: boost::iterator_tag<boost::writable_lvalue_iterator_tag , boost::random_access_traversal_tag> I need random_access_iterator_tag for the right specialization to happen. Is there any way to get the *standard* iterator category from a boost iterator? MyIter is boost::indirect_iterator<std::vector<int *>::iterator> compiler is gcc 3.2.3 (mingw special 20030504-1) BTW, isn't this non-standard iterator_category bound to cause problems? e.g. if I use std::distance (MyIter(), MyIter()), how does the compiler know that it should use the std::random_access_iterator_tag specialization of std::distance? -- Raoul Gough "Let there be one measure for wine throughout our kingdom, and one measure for ale, and one measure for corn" - Magna Carta

2 2

[Spirit] file_iterator confusion
by Angus Leeming 13 Aug '03

13 Aug '03

Hello. I am just beginning to look at the spirit library, but am confused by the way file_iterator is working. Could anyone explain to me why this works: typedef spirit::file_iterator <char_t> iterator_t; iterator_t first(argv[1]); // check first is valid ... iterator_t last = first.make_end(); but this doesn't: typedef spirit::file_iterator <char_t> iterator_t; iterator_t first; iterator_t last; boost::tie(first, last) = open_file(argv[1]); // check first is valid ... Both codes compile, but only the first method results in the file being read. In the second instance, the correct number of chars are read, but only the first char is output (multiple times). The open_file function is simply: std::pair<iterator_t, iterator_t> open_file(char const * name) { iterator_t first(name); iterator_t last = first ? first.make_end() : iterator_t(); return std::make_pair(first, last); } Minimal sample code attached. My tests have been with boost 1.30.1. Changing the line #define FAILURE_MODE 1 toggles between the two cases. Best regards, Angus [Non-text portions of this message have been removed]

2 2

Using BGL Graphviz with MSVC7
by Trevon Fuller 12 Aug '03

12 Aug '03

Is there documentation anywhere that explains how to build and link graphviz for MSVC .NET for use with the BOOST graph library? I am trying to compile the example ospf-example.cpp from the BOOST graph library in MSVC .NET. I am using BOOST 1.30.0. I built the graphviz library using bjam with the vc7 toolset. I am getting a compile error: c:\boost_1_30_0\boost\tuple\detail\tuple_basic_no_partial_spec.hpp(83): error C2679: binary '=' : no operator found which takes a right-hand operand of type 'const boost::detail::adj_list_gen<Graph,VertexListS,OutEdgeListS,DirectedS,VertexP roperty,EdgeProperty,GraphProperty,EdgeListS>::config::edge_iterator' (or there is no acceptable conversion) with [ Graph=boost::adjacency_list<boost::vecS,boost::vecS,boost::directedS,boost:: no_property,boost::property<boost::edge_weight_t,int,boost::no_property>,boo st::no_property,boost::listS>, VertexListS=boost::vecS, OutEdgeListS=boost::vecS, DirectedS=boost::directedS, VertexProperty=boost::no_property, EdgeProperty=boost::property<boost::edge_weight_t,int,boost::no_property>, GraphProperty=boost::no_property, EdgeListS=boost::listS ] I think this error is due to the fact that MSVC does not support partial template specialization. Also, when I comment out all of the code except for the first 3 lines of the main, I get the error : dijkstra_link_state_routing error result returned from 'cl.exe' ("dijkstra_link_state_routing" is the name of the solution that contains the file ospf-example.cpp). Any suggestions anyone could offer would be appreciated. Below is the code for ospf-example.cpp. It is the same as the code on the BOOST website. Thanks, Trevon Fuller //====================================================================== // Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee, // // This file is part of the Boost Graph Library // // You should have received a copy of the License Agreement for the // Boost Graph Library along with the software; see the file LICENSE. // If not, contact Office of Research, Indiana University, // Bloomington, IN 47405. // // Permission to modify the code and to distribute the code is // granted, provided the text of this NOTICE is retained, a notice if // the code was modified is included with the above COPYRIGHT NOTICE // and with the COPYRIGHT NOTICE in the LICENSE file, and that the // LICENSE file is distributed with the modified code. // // LICENSOR MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. // By way of example, but not limitation, Licensor MAKES NO // REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY // PARTICULAR PURPOSE OR THAT THE USE OF THE LICENSED SOFTWARE COMPONENTS // OR DOCUMENTATION WILL NOT INFRINGE ANY PATENTS, COPYRIGHTS, TRADEMARKS // OR OTHER RIGHTS. //====================================================================== #include <fstream> // for file I/O #include <boost/graph/graphviz.hpp> // for read/write_graphviz() #include <boost/graph/dijkstra_shortest_paths.hpp> #include <boost/lexical_cast.hpp> int main() { using namespace boost; GraphvizDigraph g_dot; read_graphviz("figs/ospf-graph.dot", g_dot); typedef adjacency_list < vecS, vecS, directedS, no_property, property < edge_weight_t, int > > Graph; typedef graph_traits < Graph >::vertex_descriptor vertex_descriptor; Graph g(num_vertices(g_dot)); property_map < GraphvizDigraph, edge_attribute_t >::type edge_attr_map = get(edge_attribute, g_dot); graph_traits < GraphvizDigraph >::edge_iterator ei, ei_end; for (tie(ei, ei_end) = edges(g_dot); ei != ei_end; ++ei) { int weight = lexical_cast < int >(edge_attr_map[*ei]["label"]); property < edge_weight_t, int >edge_property(weight); add_edge(source(*ei, g_dot), target(*ei, g_dot), edge_property, g); } vertex_descriptor router_six; property_map < GraphvizDigraph, vertex_attribute_t >::type vertex_attr_map = get(vertex_attribute, g_dot); graph_traits < GraphvizDigraph >::vertex_iterator vi, vi_end; for (tie(vi, vi_end) = vertices(g_dot); vi != vi_end; ++vi) if ("RT6" == vertex_attr_map[*vi]["label"]) { router_six = *vi; break; } std::vector < vertex_descriptor > parent(num_vertices(g)); // All vertices start out as there own parent typedef graph_traits < Graph >::vertices_size_type size_type; for (size_type p = 0; p < num_vertices(g); ++p) parent[p] = p; #if defined(BOOST_MSVC) && BOOST_MSVC <= 1300 std::vector<int> distance(num_vertices(g)); property_map<Graph, edge_weight_t>::type weightmap = get(edge_weight, g); property_map<Graph, vertex_index_t>::type indexmap = get(vertex_index, g); dijkstra_shortest_paths (g, router_six, &parent[0], &distance[0], weightmap, indexmap, std::less<int>(), closed_plus<int>(), std::numeric_limits<int>::max(), 0, default_dijkstra_visitor()); #else dijkstra_shortest_paths(g, router_six, predecessor_map(&parent[0])); #endif graph_traits < GraphvizDigraph >::edge_descriptor e; for (size_type i = 0; i < num_vertices(g); ++i) if (parent[i] != i) { e = edge(parent[i], i, g_dot).first; edge_attr_map[e]["color"] = "black"; } #if defined(BOOST_MSVC) && BOOST_MSVC <= 1300 // VC++ can't handle write_graphviz :( { std::ofstream out("figs/ospf-sptree.dot"); out << "digraph loops {\n" << "size=\"3,3\"\n" << "ratio=\"fill\"\n" << "shape=\"box\"\n"; graph_traits<Graph>::vertex_iterator vi, vi_end; for (tie(vi, vi_end) = vertices(g); vi != vi_end; ++vi) { out << *vi << "["; for (std::map<std::string,std::string>::iterator ai vertex_attr_map[*vi].begin(); ai != vertex_attr_map[*vi].end(); ++ai) { out << ai->first << "=" << ai->second; if (next(ai) != vertex_attr_map[*vi].end()) out << ", "; } out<< "]"; } for (tie(ei, ei_end) = edges(g); ei != ei_end; ++ei) { out << source(*ei, g) << " -> " << target(*ei, g) << "["; std::map<std::string,std::string>& attr_map = edge_attr_map[*ei]; for (std::map<std::string,std::string>::iterator eai attr_map.begin(); eai != attr_map.end(); ++eai) { out << eai->first << "=" << eai->second; if (next(eai) != attr_map.end()) out << ", "; } out<< "]"; } out << "}\n"; } #else graph_property < GraphvizDigraph, graph_edge_attribute_t >::type & graph_edge_attr_map = get_property(g_dot, graph_edge_attribute); graph_edge_attr_map["color"] = "grey"; write_graphviz("figs/ospf-sptree.dot" , g_dot); #endif std::ofstream rtable("routing-table.dat"); rtable << "Dest Next Hop Total Cost" << std::endl; for (tie(vi, vi_end) = vertices(g_dot); vi != vi_end; ++vi) if (parent[*vi] != *vi) { rtable << vertex_attr_map[*vi]["label"] << " "; vertex_descriptor v = *vi, child; int path_cost = 0; property_map < Graph, edge_weight_t >::type weight_map = get(edge_weight, g); do { path_cost += get(weight_map, edge(parent[v], v, g).first); child = v; v = parent[v]; } while (v != parent[v]); rtable << vertex_attr_map[child]["label"] << " "; rtable << path_cost << std::endl; } return EXIT_SUCCESS; }

1 0

tuples: operator ==
by Konstantin M. Litvinenko 12 Aug '03

12 Aug '03

Hello, All! I can't compile this simple test: --------------------------------------------- #include <boost/tuple/tuple.hpp> #include <iostream> using namespace boost::tuples; using namespace std; int main() { typedef tuple<int, tuple<int, int> > Tuple; Tuple t1(1, make_tuple(1, 1)); Tuple t2(2, make_tuple(2, 2)); if (get<1>(t1) == get<1>(t2)) { cout << "equal"; } else { cout << " not equal"; } return 0; } ----------------------------------------- What am I doing wrong? Compilers: Borland Builder 6 (bcc32.exe 5.6.4) and VC7 With best regards, Konstantin M. Litvinenko aka Dark Angel.

2 1

RE: [Boost-Users] boos::bind class member function
by Ioffe, Robert 12 Aug '03

12 Aug '03

Dirk, The following should not compile: for_each(v.begin(), v.end(), boost::bind(&myclass::print, _1)); since myclass::print actually takes two arguments and the first one is not the std::string, but the object of class myclass. So you should do something like this: myclass foo; for_each(v.begin(), v.end(), boost::bind(&myclass::print, foo, _1)); Have fun, Robert Ioffe -----Original Message----- From: dirk_griffioen [mailto:diddekio@yahoo.com] Sent: Tuesday, August 12, 2003 3:43 AM To: Boost-Users(a)yahoogroups.com Subject: [Boost-Users] boos::bind class member function Hi, I would like to use a for_each with a class member function. The for_each in myclass::do_print below does not compile. And I simply cant figure it out. I'm using vc7.1. //////////////////////////////// void print2(std::string s) { cout << s << '\n'; } class myclass { public: void print(std::string s); void do_print(); }; void myclass::print(std::string s) { cout << s << '\n'; } void myclass::do_print() { vector<std::string> v; v.push_back("a"); v.push_back("b"); v.push_back("c"); v.push_back("d"); for_each(v.begin(), v.end(), boost::bind(boost::type<void>(), &myclass::print, _1)); } ///////////////////////////////////////// nor will for_each(v.begin(), v.end(), boost::bind(&myclass::print, _1)); for_each(v.begin(), v.end(), boost::bind(print, _1)); whereas for_each(v.begin(), v.end(), boost::bind(print2, _1)); is ok It seems natural to do, but I cant get it. Dirk Info: <http://www.boost.org> Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

1 0

BUG: _DLL used to define BOOST_SIGNALS_STATIC_LINK
by kaineumann2001 12 Aug '03

12 Aug '03

Under cl(MS)/icl(Intel) compiler hash-def '_DLL' denotes dynamic linking of the C runtime library. Therefore, signals library should not use this to determine linkage (I may wish to statically link the signals library, while dynamically linking c-runtime.) see file boost/signals/detail/signals_common.hpp where the following snippet is invalid: #if defined(_MSC_VER) && defined(_DLL) # define BOOST_SIGNALS_HAS_DLL_RUNTIME #endif #if defined(BOOST_SIGNALS_HAS_DLL_RUNTIME) && !defined (BOOST_SIGNALS_STATIC_LINK) # if defined(BOOST_SIGNALS_IN_LIBRARY_SOURCE) # define BOOST_SIGNALS_DECL __declspec(dllexport) # define BOOST_SIGNALS_BUILD_DLL # else # define BOOST_SIGNALS_DECL __declspec(dllimport) # endif #endif here BOOST_SIGNALS_DECL is defined as __declspec(dllimport) as a consequence of linking the c-runtime dynamically under cl/icl compilers. But that's not what I wanted - I wanted to link signals.lib statically. This same bug is in the regex library. In fact, anyone able to fix this, should search for _DLL in the BOOST headers. Cheers, Kai

2 1

boos::bind class member function
by dirk_griffioen 12 Aug '03

12 Aug '03

Hi, I would like to use a for_each with a class member function. The for_each in myclass::do_print below does not compile. And I simply cant figure it out. I'm using vc7.1. //////////////////////////////// void print2(std::string s) { cout << s << '\n'; } class myclass { public: void print(std::string s); void do_print(); }; void myclass::print(std::string s) { cout << s << '\n'; } void myclass::do_print() { vector<std::string> v; v.push_back("a"); v.push_back("b"); v.push_back("c"); v.push_back("d"); for_each(v.begin(), v.end(), boost::bind(boost::type<void>(), &myclass::print, _1)); } ///////////////////////////////////////// nor will for_each(v.begin(), v.end(), boost::bind(&myclass::print, _1)); for_each(v.begin(), v.end(), boost::bind(print, _1)); whereas for_each(v.begin(), v.end(), boost::bind(print2, _1)); is ok It seems natural to do, but I cant get it. Dirk

1 0

how to convert c++ objects to Python?
by cavok＠filibusta.crema.unimi.it 12 Aug '03

12 Aug '03

hi, i have a c++ function that returns a reference to a c++ object. i want to expose this function to Python making it return the Python version of the object. i'm using Boost.Python. i understood that i have to use to_python_converter but the body of the A_to_Python::convert function is mystery for me. Boost documentation's example solves the problem in a manner i'm not able to apply to my case. my A object is complex and i'd like to somewhat (re)use the class_ object. ---------------- CUT HERE ---------------- #include <boost/python.hpp> using namespace boost::python; struct A { void f() {} }; A a; struct A_to_Python { static PyObject* convert(const A& a) { // documentation says: // return PyObject_New(noddy_NoddyObject, &noddy_NoddyType); } }; A& get_A() { return a; } BOOST_PYTHON_MODULE(hello) { class_<A>("A") .def("f", &A::f) ; to_python_converter<A, A_to_Python>(); def("get_A", get_A, return_value_policy<reference_existing_object>()); } ---------------- CUT HERE ---------------- please, somebody enlighten me. many thanks domenico -----[ Domenico Andreoli, aka cavok --[ http://filibusta.crema.unimi.it/~cavok/gpgkey.asc ---[ 3A0F 2F80 F79C 678A 8936 4FEE 0677 9033 A20E BC50

2 1

BGL write_graphviz and VertexList type
by Solomon Gibbs 12 Aug '03

12 Aug '03

Hello, I've been trying to use the write_graphviz function in BGL, and I've noticed that it appears to be sensitive to the type of VertexList used in the graph. adjacency_lists using a boost::vecS produce vertex indices in integer form like: graph G { 0[label="0"]; 1[label="1"]; 0--1 [label="2.8"]; } but the same code backed by boost::listS seems to not dereference completely: graph G { 0x80545f0[label="10"]; 0x8054608[label="11"]; 0x80545f0--0x8054608 [label="2.8"]; } dot doesn't like this. I notice that write_graphviz dereferences boost::graph_traits<Graph>::vertex_iterator to print the vertex. Are the listS and vecS *operators different somehow? The vector backed adjacency_list also seems to be automagically setting the vertex_index property to the actual index of the vertex in the storage vector instead of the value given in add_vertex(). My question is: Is this the expected behavior for these classes or some problem I've managed to create on my own? Thanks, Solomon

2 1

boost::python - how to expose c++ instancess?
by cavok＠filibusta.crema.unimi.it 11 Aug '03

11 Aug '03

hi, i'd like to do something like this: -------------- CUT HERE -------------- #include <boost/python.hpp> using namespace boost::python; struct A { void f() { /* do something */ } }; A a; BOOST_PYTHON_MODULE(hello) { class_<A>("A") .def("f", &A::f) ; def_readwrite("a", a); } -------------- CUT HERE -------------- i don't see how to do it with boost. any hint for a poor newbie? thanks dom -----[ Domenico Andreoli, aka cavok --[ http://filibusta.crema.unimi.it/~cavok/gpgkey.asc ---[ 3A0F 2F80 F79C 678A 8936 4FEE 0677 9033 A20E BC50

2 1

Boost smart pointers.
by Amit Bhatia 10 Aug '03

10 Aug '03

Hello All, I have been trying to understand the smart pointer library. One thing that I did not understand was in the documentationin quite beginning: "T may be an incomplete type at the point of smart pointer declaration. Unless otherwise specified, it is required that T be a complete type at points of smart pointer instantiation." So what exactly does this incomplete/complete type mean? Does this have anything to do with the class pointed to being abstract /concrete ? thanks, regards, amit.

2 1

FileSystem Link Error
by sarwanaggarwal 10 Aug '03

10 Aug '03

Hi: - managed to build "lib" using bjam tool. - copied that to a conveneient place - tried linking the "ls example" - I get a link error - file name not found. My environment is Borland Builder C++, 6.0. On MSVC++ 6.0, I get too many compile errors. Any hints? Greatly appreciated. Thanks. Sarwan

2 1

How to use wildcards in filesystem::path?
by yxh 10 Aug '03

10 Aug '03

Hello, Can I use "*.*" or "XXX?.???" in filesystem::path? I want to iterate through a directory to get file names such as "*.txt". Can anyone tell how to do this? Thanks in advance.

2 1

shared_ptr and private inheritance
by Jason Winnebeck 10 Aug '03

10 Aug '03

if class B : private A in a method of class B, given a shared_ptr<B>, is it possible to get a shared_ptr<A> that shares ownership without making boost::shared_ptr<A> a friend in class B? Jason Winnebeck

1 0

[BGL] Different types as vertices of a graph
by sashan 10 Aug '03

10 Aug '03

I'd like to use the graph library to support connections between different types of objects. To do this I've created a class GraphNode that forms the base class for various other objects that can become vertices of the graph. I've tried the following. int main(int,char*[]) { //these two classes Translate and Mesh inherit from GraphNode Translate* pT = new Translate; Mesh* pM = new Mesh; // create a typedef for the Graph type typedef adjacency_list<vecS, vecS, bidirectionalS> Graph; const int num_vertices = 2; // writing out the edges in the graph typedef std::pair<GraphNode*, GraphNode*> GraphEdge; GraphEdge edge_array[] = { GraphEdge(pT,pM) }; const int num_edges = sizeof(edge_array)/sizeof(edge_array[0]); // declare a graph object Graph g(num_vertices); // add the edges to the graph object for (int i = 0; i < num_edges; ++i) add_edge(edge_array[i].first, edge_array[i].second, g); return 0; } but get the following error message related to the fact that it can't choose a suitable overloaded add_edge function. If I replace the types in the vertex with an int it compiles happily. I'm using Boost 1.30.0 e:\Code\Edge\Console\Console.cpp(42) : error C2665: 'boost::add_edge' : none of the 2 overloads can convert parameter 1 from type 'GraphNode *' e:\Code\boost\boost\graph\detail\adjacency_list.hpp(1211): could be 'std::pair<_Ty1,_Ty2> boost::add_edge<boost::detail::adj_list_gen<Graph,VertexListS,OutEdgeListS,DirectedS,VertexProperty,EdgeProperty,GraphProperty,EdgeListS>::config>(boost::detail::adj_list_gen<Graph,VertexListS,OutEdgeListS,DirectedS,VertexProperty,EdgeProperty,GraphProperty,EdgeListS>::config::vertex_descriptor,boost::detail::adj_list_gen<Graph,VertexListS,OutEdgeListS,DirectedS,VertexProperty,EdgeProperty,GraphProperty,EdgeListS>::config::vertex_descriptor,boost::bidirectional_graph_helper_with_property<Config> &)' with [ _Ty1=boost::adj_list_helper<boost::detail::adj_list_gen<boost::adjacency_list<boost::vecS,boost::vecS,boost::bidirectionalS>,boost::vecS,boost::vecS,boost::bidirectionalS,boost::no_property,boost::no_property,boost::no_property,boost::listS>::config,boost::detail::adj_list_gen<boost::adjacency_list<boost::vecS,boost::vecS,boost::bidirectionalS>,boost::vecS,boost::vecS,boost::bidirectionalS,boost::no_property,boost::no_property,boost::no_property,boost::listS>::DirectedHelper>::edge_descriptor, _Ty2=bool, Graph=boost::adjacency_list<boost::vecS,boost::vecS,boost::bidirectionalS>, VertexListS=boost::vecS, OutEdgeListS=boost::vecS, DirectedS=boost::bidirectionalS, VertexProperty=boost::no_property, EdgeProperty=boost::no_property, GraphProperty=boost::no_property, EdgeListS=boost::listS, Config=boost::detail::adj_list_gen<boost::adjacency_list<boost::vecS,boost::vecS,boost::bidirectionalS>,boost::vecS,boost::vecS,boost::bidirectionalS,boost::no_property,boost::no_property,boost::no_property,boost::listS>::config ] e:\Code\boost\boost\graph\detail\adjacency_list.hpp(1941): or 'std::pair<_Ty1,_Ty2> boost::add_edge<Graph,boost::detail::adj_list_gen<Graph,VertexListS,OutEdgeListS,DirectedS,VertexProperty,EdgeProperty,GraphProperty,EdgeListS>::config,boost ::detail::adj_list_gen<Graph,VertexListS,OutEdgeListS,DirectedS,VertexProperty,EdgeProperty,GraphProperty,EdgeListS>::DirectedHelper>(boost::detail::adj_list_gen<Graph,VertexListS,OutEdgeListS,DirectedS,VertexProperty,EdgeProperty,GraphProperty,EdgeListS>::config::vertex_descriptor,boost::detail::adj_list_gen<Graph,VertexListS,OutEdgeListS,DirectedS,VertexProperty,EdgeProperty,GraphProperty,EdgeListS>::config::vertex_descriptor,boost::vec_adj_list_impl<Graph,Config,Base> &)' with [ _Ty1=boost::adj_list_helper<boost::detail::adj_list_gen<boost::adjacency_list<boost::vecS,boost::vecS,boost::bidirectionalS>,boost::vecS,boost::vecS,boost::bidirectionalS,boost::no_property,boost::no_property,boost::no_property,boost::listS>::config,boost::detail::adj_list_gen<boost::adjacency_list<boost::vecS,boost::vecS,boost::bidirectionalS>,boost::vecS,boost::vecS,boost::bidirectionalS,boost::no_property,boost::no_property,boost::no_property,boost::listS>::DirectedHelper>::edge_descriptor, _Ty2=bool, Graph=boost::adjacency_list<boost::vecS,boost::vecS,boost::bidirectionalS>, VertexListS=boost::vecS, OutEdgeListS=boost::vecS, DirectedS=boost::bidirectionalS, VertexProperty=boost::no_property, EdgeProperty=boost::no_property, GraphProperty=boost::no_property, EdgeListS=boost::listS, Config=boost::detail::adj_list_gen<boost::adjacency_list<boost::vecS,boost::vecS,boost::bidirectionalS>,boost::vecS,boost::vecS,boost::bidirectionalS,boost::no_property,boost::no_property,boost::no_property,boost::listS>::config, Base=boost::detail::adj_list_gen<boost::adjacency_list<boost::vecS,boost::vecS,boost::bidirectionalS>,boost::vecS,boost::vecS,boost::bidirectionalS,boost::no_property,boost::no_property,boost::no_property,boost::listS>::DirectedHelper ] while trying to match the argument list '(GraphNode *, GraphNode *, Graph)' e:\Code\boost\boost\iterator_adaptors.hpp(1409) : see reference to class template instantiation 'boost::filter_iterator_generator<Predicate,Iterator,Value,Reference,Pointer,Category,Distance>' being compiled

2 1

[BGL] build problems
by Angus Leeming 09 Aug '03

09 Aug '03

Dear all, I'm a bjam newbie trying to build the BGL in boost 1.30.0 on a DEC Alpha running linux. However, the build process is failing to generate the graphviz parser and lexer: $ cd libs/graph/build $ bjam "-sTOOLS=gcc" ...found 437 targets... ...using 2 temp targets... ...updating 3 targets... ...using <libs!graph!build/liblibbgl-viz.a/gcc/debug/inlining-on/runtime-link-dynamic>graphviz_graph_lex.o... ...using <libs!graph!build/liblibbgl-viz.a/gcc/debug/inlining-on/runtime-link-dynamic>graphviz_digraph_lex.o... gcc-C++-action ../../../libs/graph/build/bin/liblibbgl-viz.a/gcc/debug/inlining-on/runtime-link-dynamic/graphviz_graph_parser.o graphviz_parser.y:44:2: #error Need to define the GRAPHVIZ_GRAPH macro to either GraphvizGraph or GraphvizDigraph. graphviz_parser.y:61: error: `GRAPHVIZ_GRAPH' was not declared in this scope graphviz_parser.y:61: error: template argument 1 is invalid graphviz_parser.y:61: error: syntax error before `;' token graphviz_parser.y:62: error: `GRAPHVIZ_GRAPH' was not declared in this scope graphviz_parser.y:62: error: template argument 1 is invalid graphviz_parser.y:62: error: syntax error before `;' token graphviz_parser.y:63: error: syntax error before `;' token [snip] This all seems very reasonable, but I do not know how to resolve the problem. I see that Jamfile.v2 has explicit rules to build graphviz_graph_lex.o, graphviz_digraph_lex.o, setting GRAPHVIZ_GRAPH appropriately. However, my version of bjam (3.1.4) does not understand Jamfile.v2 and I lack the knowledge to do the equivalent in Jamfile. I did try to append some rules to the Jamfile(see below), but unsurprisingly without success. Could anyone provide me with pointers on how to proceed? Kind regards, Angus Lex graphviz_graph_lex.cpp : graphviz_lex.l : <define>GRAPHVIZ_DIRECTED=0 <dependency>graphviz_graph_parser ; Yacc graphviz_graph_parser.cpp : graphviz_parser.y : <define>GRAPHVIZ_DIRECTED=0 ; Lex graphviz_digraph_lex.cpp : graphviz_lex.l : <define>GRAPHVIZ_DIRECTED=1 <dependency>graphviz_digraph_parser ; Yacc graphviz_digraph_parser.cpp : graphviz_parser.y : <define>GRAPHVIZ_DIRECTED=1 ; Object graphviz_graph_lex.o : graphviz_graph_lex.cpp ; Object graphviz_graph_parser.o : graphviz_graph_parser.cpp ; Object graphviz_digraph_lex.o : graphviz_digraph_lex.cpp ; Object graphviz_digraph_parser.o : graphviz_digraph_parser.cpp ;

4 7

what is wrong with boost::bind?
by yxh 08 Aug '03

08 Aug '03

Hi, I am using boost::bind from boost 1.30.0. When I type "boost::bind(", the VS.NET 20003 IDE stopped responding. What is wrong? #include <boost/bind.hpp> int main(void) { boost::bind( // IDE dies here }

5 5

use of REGEX_SEARCH to match lookahed subexpression.
by yanbelinky 08 Aug '03

08 Aug '03

Dear Regex Guru, I am trying to use REGEX_SEARCH algorithm to match lookahed subexpression. Search in the folowing strings (see below) using expression like: /exchange/test/(?!Drafts)/a.EML/b.png fails /exchange/test/Drafts/a.EML/b.gif /exchange/test/Inbox/a.EML/b.png /exchange/test/Inbox/a.EML/b.gif /exchange/test/Drafts/a.EML/b.png At the same moment I can suceesfully search using the expression: /exchange/test/Inbox/a.EML/b.(?!png). >From online documentation I realize that regex supports lookahed search. Please help me understand what I am doing wrong. P.S. It is tested with the program closely modeled from example provided for regex_search. Thank you for your help. Yan Belinky Senior Software Engineer. Whale Communications, LTD.

2 1

RE: [Boost-Users] shared_ptr memory leak (newb)
by Mark Storer 07 Aug '03

07 Aug '03

*string allocates it's own copy of the string, so your pmem pointer is leaked. STL's string templates manage their own memory, you never need to use new or delete to [de]allocate for them. --Mark Storer Software Engineer Cardiff Software #include <disclaimer> typdef std::disclaimer<Cardiff> Discard; > -----Original Message----- > From: Aaron Campbell [mailto:yg-boost-users@m.gmane.org] > Sent: Thursday, August 07, 2003 1:22 PM > To: boost-users(a)yahoogroups.com > Subject: [Boost-Users] shared_ptr memory leak (newb) > > > why does this leak memory from the first call to "new"? > how can I prevent the leak? > > wchar_t* pmem = new wchar_t[10]; > boost::shared_ptr<std::wstring> cp ( new std::wstring(pmem) ); > > thanks for the help, > .Aaron > > > > > > ------------------------ Yahoo! Groups Sponsor > ---------------------~--> > Buy Ink Cartridges or Refill Kits for Your HP, Epson, Canon or Lexmark > Printer at Myinks.com. Free s/h on orders $50 or more to the > US & Canada. http://www.c1tracking.com/l.asp?cid=5511 > http://us.click.yahoo.com/l.m7sD/LIdGAA/qnsNAA/EbFolB/TM > -------------------------------------------------------------- > -------~-> > > Info: <http://www.boost.org> > Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> > Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

1 0

shared_ptr memory leak (newb)
by Aaron Campbell 07 Aug '03

07 Aug '03

why does this leak memory from the first call to "new"? how can I prevent the leak? wchar_t* pmem = new wchar_t[10]; boost::shared_ptr<std::wstring> cp ( new std::wstring(pmem) ); thanks for the help, .Aaron

1 0

Problems with if_then_else_return in boost::lambda library
by Ioffe, Robert 07 Aug '03

07 Aug '03

Hi, If I have a vector of strings vector<string> v; v.push_back("One"); v.push_back("Two"); v.push_back("Three"); v.push_back("Four"); v.push_back("Five"); and define arithmetic action plus like this: namespace boost { namespace lambda { struct plain_return_type_2<arithmetic_action<plus_action>, std::string, std::string> { typedef std::string type; }; } } then the following code works just fine: cout << accumulate(v.begin()+1, v.end(), v.front(), _1 + string(", ") + _2) << endl; and the following also works wonderfully: int i = 1; cout << accumulate(v.begin()+1, v.end(), v.front(), _1 + bind(constructor<string>(), var(i)++, ' ') + _2) << endl; Now, if I want to use if_then_else_return as shown below, it fails miserably, producing a huge error message: cout << accumulate(v.begin(), v.end(), string(), if_then_else_return(_1 == string(), _1, _1 + bind(constructor<string>(), var(i)++, ' ') + _2)) << endl; Now for the questions: What is the proper way to use if_then_else_return? Why do I need to define a separate arithmetic action for strings, even though they are a common library type? Is there a way to say the most intuitive: cout << accumulate(v.begin()+1, v.end(), v.front(), _1 + ", " + _2) << endl; Is there way to do more intuitive: cout << accumulate(v.begin()+1, v.end(), v.front(), _1 + string(i++, ' ') + _2) << endl; Thank you for your help. Robert Ioffe [Non-text portions of this message have been removed]

1 0

[function] How to extract a tuple<A0,A1> of arguments from a boost::function<>?
by Fernando Cacciola 07 Aug '03

07 Aug '03

Short question: As the Subject says, given a boost::function{1..N}<>, how can I extract a tuple of all its arguments? Long question: Anyway, what I'm really trying to do is this: Given some classes with different methods: struct X { void f(int n ) ; } ; struct Y { void g(char c, double d ) ; } ; I want to easly create _polymorphic_ closures binding member functions of X /Y with instances of X/Y and function arguments. The goal is the have a deferred 'action' list for easy backtracing of an algorithm. That is, instead of directly calling: X x ; Y y ; x.f(1); y.g('a',1.2); I want to do something that would look like: X x; Y y; ActionList actions; actions.push_back( make_closure(&X::f, x,1) ); actions.push_back( make_closure(&Y::g, y,'a',1.2) ); std::for_each(actions.begin(),actions.end(),execute_action()); TIA Fernando Cacciola

2 2

filesystem compilation on tru64 unix
by allysonlurena 07 Aug '03

07 Aug '03

Hi all, I have been trying to build the filesystem library for one of our alpha servers running tru64 unix. I have managed to compile bjam using the tru64cxx toolset. Then, I went into the filesystem build directory and ran the following, but it has been hanging for over 30 minutes now on the last command you see below. Can anyone help? It could just be our machines, but I am at a loss. Does anyone have any ideas? Any help would be appreciated! Thanks Allyson $ cxx -V Compaq C++ V6.5-014 for Compaq Tru64 UNIX V5.1A (Rev. 1885) Compiler Driver V6.5-014 (cxx) cxx Driver rum:/.../boost_1_30_0/libs/filesystem/build $ bjam "-sTOOLS=tru64cxx65" ...found 432 targets... ...using 1 temp target... ...updating 9 targets... tru64cxx65-C++-action ../../../libs/filesystem/build/bin/libboost_filesystem.a/tru64cxx65/debug/exception.o tru64cxx65-C++-action ../../../libs/filesystem/build/bin/libboost_filesystem.a/tru64cxx65/debug/operations_posix_windows.o cxx: Warning: ../src/operations_posix_windows.cpp, line 236: #767-D conversion from pointer to smaller integer assert( m_imp.get() ); // fails if dereference end iterator ------^ cxx: Warning: ../src/operations_posix_windows.cpp, line 242: #767-D conversion from pointer to smaller integer assert( m_imp.get() ); // fails on increment end iterator ------^ tru64cxx65-C++-action ../../../libs/filesystem/build/bin/libboost_filesystem.a/tru64cxx65/debug/path_posix_windows.o tru64cxx65-C++-action ../../../libs/filesystem/build/bin/libboost_filesystem.a/tru64cxx65/debug/convenience.o tru64cxx65-Archive-action ../../../libs/filesystem/build/bin/libboost_filesystem.a/tru64cxx65/debug/libboost_filesystem.a ar: Warning: creating ../../../libs/filesystem/build/bin/libboost_filesystem.a/tru64cxx65/debug/libboost_filesystem.a Ranlib ../../../libs/filesystem/build/bin/libboost_filesystem.a/tru64cxx65/debug/libboost_filesystem.a ...using <libs!filesystem!build/libboost_filesystem.a/tru64cxx65/release>exception.o... tru64cxx65-C++-action ../../../libs/filesystem/build/bin/libboost_filesystem.a/tru64cxx65/release/operations_posix_windows.o So, it seems to hang at the last command above. Thanks again! Allyson

3 2

cvs checkout probs
by Angus Leeming 07 Aug '03

07 Aug '03

Hi, I have just tried to checkout the boost cvs tree from sourceforge, but get stuck at cvs server: Updating boost/libs/numeric/mtl/test cvs server: [05:07:19] waiting for anoncvs_boost's lock in /cvsroot/boost/boost/libs/numeric/mtl/test I can subsequently check out the remaining stuff with $ cat tmp pool preprocessor property_map python random rational regex signals smart_ptr spirit static_assert test thread timer tokenizer tuple type_traits utility $ for dir in `cat tmp`; do cvs -z3 co boost/libs/$dir; done so it appears that the problem is specific to the boost/libs/numeric/mtl/test directory. Kind regards, Angus

1 0

[boost] filesystem lib & linking (MSVC.NET)
by Jonathan Roewen 07 Aug '03

07 Aug '03

Hi All, I'm trying to use the filesystem lib, but I'm having some problems figuring out how to build it properly. I'm using MSVC.NET on WindowsXP, and I ran the bjam tool like in the docs for the whole set of libraries. It took me a while to figure out where it had put everything, and finally found a file called libboost_filesystem.lib. I copied it to a convenient location, added the library path and lib file to my project settings, and then tried to link my app. MSVC then gave a bunch of linker errors, and suggested to add MSVCRT to the nodefaultlib setting, so I did that, and got less linker errors. All that is left is some thing to do with exception & string classes. Linker errors are all about multiply defined symbols. I suppose I'm doing something wrong somewhere along the line, but not sure what. I can't tell if bjam is actually doing what it's supposed to, and the documentation around the place can be pretty sparse in places, so I hope someone can point out what I can do to get things working. Regards, Jonathan Roewen

4 4

Re: what is wrong with boost::bind?
by Jason Shirk 06 Aug '03

06 Aug '03

"yxh" <yg-boost-users(a)m.gmane.org> wrote in message news:<bgqfkv$eeu$1(a)main.gmane.org>... > I solved it by using Visual Assistant .NET I can't seem to reproduce the problem you have reported. If you could send me (jasonsh(a)microsoft.com) a project that reproduces the problem, I'd appreciate it. You might consider trying Intellisense a bit more. Because we use a variant of our C++ compiler for Intellisense, it has capabilities that are beyond many other editors. It's far from perfect, as you've found, but as far as we are aware, the template support for auto completion is much better than with any other similar tool. -- Jason Shirk VC++ Compiler Team

1 0

Problems with if_then_else_return in boost::lambda library
by Ioffe, Robert 06 Aug '03

06 Aug '03

Hi, If I have a vector of strings vector<string> v; v.push_back("One"); v.push_back("Two"); v.push_back("Three"); v.push_back("Four"); v.push_back("Five"); and define arithmetic action plus like this: namespace boost { namespace lambda { struct plain_return_type_2<arithmetic_action<plus_action>, std::string, std::string> { typedef std::string type; }; } } then the following code works just fine: cout << accumulate(v.begin()+1, v.end(), v.front(), _1 + string(", ") + _2) << endl; and the following also works wonderfully: int i = 1; cout << accumulate(v.begin()+1, v.end(), v.front(), _1 + bind(constructor<string>(), var(i)++, ' ') + _2) << endl; Now, if I want to use if_then_else_return as shown below, it fails miserably, producing a huge error message: cout << accumulate(v.begin(), v.end(), string(), if_then_else_return(_1 == string(), _1, _1 + bind(constructor<string>(), var(i)++, ' ') + _2)) << endl; Now for the questions: What is the proper way to use if_then_else_return? Why do I need to define a separate arithmetic action for strings, even though they are a common library type? Is there a way to say the most intuitive: cout << accumulate(v.begin()+1, v.end(), v.front(), _1 + ", " + _2) << endl; Is there way to do more intuitive: cout << accumulate(v.begin()+1, v.end(), v.front(), _1 + string(i++, ' ') + _2) << endl; Thank you for your help. Robert Ioffe [Non-text portions of this message have been removed]

1 0

prim_minimum_spanning_tree crashes
by Stephan Höfer 06 Aug '03

06 Aug '03

Hello, I try to use prim_minimum_spanning_tree to find rings in subgraphs doing the following: typedef subgraph< adjacency_list<vecS, vecS, undirectedS, VertexProperty, EdgeProperty> > Graph; /... building Graph g with some vertices and edges for(int i=0; i<7; ++i) { add_vertex(g); LAMath::Vec3_f tVec((float)i, (float)(6-i), .0); put(vertex_point_t(), g, i, tVec); } property_map<Graph, edge_weight_t>::type weightmap = get(edge_weight, g); Edge e; bool inserted; tie(e, inserted) = add_edge(0, 1, g); weightmap[e] = 1; tie(e, inserted) = add_edge(1, 2, g); weightmap[e] = 1; tie(e, inserted) = add_edge(2, 3, g); .../ Graph tSubGraph = g.create_subgraph(); add_vertex(1, tSubGraph); add_vertex(3, tSubGraph); add_vertex(4, tSubGraph); add_vertex(6, tSubGraph); std::vector < graph_traits < Graph >::vertex_descriptor > p(num_vertices(tSubGraph)); prim_minimum_spanning_tree(tSubGraph, &p[0]); After having created the graph g, I call the create_subgraph member function to get an induced subgraph of it. Trying to use the prim_minimum_spanning_tree function it crashes in dijkstra_dispatch1 by trying to delete the local variable std::vector<D> distance_map(n). Is there something missing in my code which leads to that crash? It works for the root graph but not for any new created subgraph. Help would be appreciated. Thanks in advance Stephan

4 8

boost and vxWorks?
by Alexander Nasonov 06 Aug '03

06 Aug '03

Does anybody use boost libraries under Vxworks? I'm especially interested in pool and threads libraries. Thankin advance -- Alexander Nasonov Remove minus and all between minus and at from my e-mail for timely response

2 1

How to avoid warning C4275 in MSVC 7.1
by yxh 06 Aug '03

06 Aug '03

Hello, when I build /libs/thread/examples/thread.cpp, I got warning C4275. I think it is because std::logic_error is not defined as dllexport/dllimport. Can anyone tell me how to correct this? TIA.

2 2

A good class to substitute boost.tuple
by Black Ice 06 Aug '03

06 Aug '03

Pls. look the source codde and demo code, you will find a good substitute for boost.tuple. Any suggestions are appreciated. Source code #ifndef _PROPERTYLIST_HEADER_ #define _PROPERTYLIST_HEADER_ namespace pl{ struct NullType { NullType() {} template<typename T> NullType(const T&) {} }; template<typename H, typename T> struct PropertyList { typedef H head_type; typedef T tail_type; typedef PropertyList<head_type, tail_type> my_type; PropertyList() : head_value(head_type()), tail_value(tail_type()) {} template<typename OtherHead, typename OtherTail> PropertyList(const OtherHead & head, const OtherTail & tail) : head_value(head), tail_value(tail) {} PropertyList(const my_type & other) : head_value(other.head_value), tail_value(other.tail_value) {} void swap(my_type & other) { std::swap(head_value, other.head_value); std::swap(tail_value, other.tail_value); } my_type & operator=(const my_type & other) { if(this != &other) { my_type temp(other); swap(temp); } return *this; } head_type head_value; tail_type tail_value; }; #define PROPERTYLIST_1(T1) PropertyList<T1, NullType> template<typename T1> PROPERTYLIST_1(T1) make_list(const T1 & t1) { return PROPERTYLIST_1(T1)(t1, NullType()); } #define PROPERTYLIST_2(T1, T2) PropertyList<T1, PROPERTYLIST_1(T2) > template<typename T1, typename T2> PROPERTYLIST_2(T1, T2) make_list(const T1 & t1, const T2 & t2) { return PROPERTYLIST_2(T1, T2)(t1, make_list(t2)); } #define PROPERTYLIST_3(T1, T2, T3) PropertyList<T1, PROPERTYLIST_2(T2, T3) > template<typename T1, typename T2, typename T3> PROPERTYLIST_3(T1, T2, T3) make_list(const T1 & t1, const T2 & t2, const T3 & t3) { return PROPERTYLIST_3(T1, T2, T3)(t1, make_list(t2, t3)); } #define PROPERTYLIST_4(T1, T2, T3, T4) PropertyList<T1, PROPERTYLIST_3(T2, T3, T4) > template<typename T1, typename T2, typename T3, typename T4> PROPERTYLIST_4(T1, T2, T3, T4) make_list(const T1 & t1, const T2 & t2, const T3 & t3, const T4 & t4) { return PROPERTYLIST_4(T1, T2, T3, T4)(t1, make_list(t2, t3, t4)); } #define PROPERTYLIST_5(T1, T2, T3, T4, T5) PropertyList<T1, PROPERTYLIST_4(T2, T3, T4, T5) > template<typename T1, typename T2, typename T3, typename T4, typename T5> PROPERTYLIST_5(T1, T2, T3, T4, T5) make_list(const T1 & t1, const T2 & t2, const T3 & t3, const T4 & t4, const T5 & t5) { return PROPERTYLIST_5(T1, T2, T3, T4, T5)(t1, make_list(t2, t3, t4, t5)); } #define PROPERTYLIST_6(T1, T2, T3, T4, T5, T6) PropertyList<T1, PROPERTYLIST_5(T2, T3, T4, T5, T6) > template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6> PROPERTYLIST_6(T1, T2, T3, T4, T5, T6) make_list(const T1 & t1, const T2 & t2, const T3 & t3, const T4 & t4, const T5 & t5, const T6 & t6) { return PROPERTYLIST_6(T1, T2, T3, T4, T5, T6)(t1, make_list(t2, t3, t4, t5, t6)); } #define PROPERTYLIST_7(T1, T2, T3, T4, T5, T6, T7) PropertyList<T1, PROPERTYLIST_6(T2, T3, T4, T5, T6, T7) > template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7> PROPERTYLIST_7(T1, T2, T3, T4, T5, T6, T7) make_list(const T1 & t1, const T2 & t2, const T3 & t3, const T4 & t4, const T5 & t5, const T6 & t6, const T7 & t7) { return PROPERTYLIST_7(T1, T2, T3, T4, T5, T6, T7)(t1, make_list(t2, t3, t4, t5, t6, t7)); } #define PROPERTYLIST_8(T1, T2, T3, T4, T5, T6, T7, T8) PropertyList<T1, PROPERTYLIST_7(T2, T3, T4, T5, T6, T7, T8) > template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8> PROPERTYLIST_8(T1, T2, T3, T4, T5, T6, T7, T8) make_list(const T1 & t1, const T2 & t2, const T3 & t3, const T4 & t4, const T5 & t5, const T6 & t6, const T7 & t7, const T8 & t8) { return PROPERTYLIST_8(T1, T2, T3, T4, T5, T6, T7, T8)(t1, make_list(t2, t3, t4, t5, t6, t7, t8)); } #define PROPERTYLIST_9(T1, T2, T3, T4, T5, T6, T7, T8, T9) PropertyList<T1, PROPERTYLIST_8(T2, T3, T4, T5, T6, T7, T8, T9) > template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9> PROPERTYLIST_9(T1, T2, T3, T4, T5, T6, T7, T8, T9) make_list(const T1 & t1, const T2 & t2, const T3 & t3, const T4 & t4, const T5 & t5, const T6 & t6, const T7 & t7, const T8 & t8, const T9 & t9) { return PROPERTYLIST_9(T1, T2, T3, T4, T5, T6, T7, T8, T9)(t1, make_list(t2, t3, t4, t5, t6, t7, t8, t9)); } #define PROPERTYLIST_10(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10) PropertyList<T1, PROPERTYLIST_9(T2, T3, T4, T5, T6, T7, T8, T9, T10) > template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9, typename T10> PROPERTYLIST_10(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10) make_list(const T1 & t1, const T2 & t2, const T3 & t3, const T4 & t4, const T5 & t5, const T6 & t6, const T7 & t7, const T8 & t8, const T9 & t9, const T10 & t10) { return PROPERTYLIST_10(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)(t1, make_list(t2, t3, t4, t5, t6, t7, t8, t9, t10)); } template <class PList> struct Length { enum{value = 1 + Length<PList::tail_type>::value}; }; template <> struct Length<NullType> { enum{value = 0}; }; template<class PList, unsigned int N> struct TypeAt { typedef typename TypeAt<typename PList::tail_type, N-1>::type type; }; template<class PList> struct TypeAt<PList, 0> { typedef typename PList::head_type type; }; template<int N> struct TypeAt<NullType, N> { }; template<> struct TypeAt<NullType, 0> { typedef NullType type; }; template<class PList, class T> struct Append { typedef PropertyList<typename PList::head_type, typename Append< typename PList::tail_type, T>::type> type; }; template<class T> struct Append<NullType, T> { typedef PropertyList<T, NullType> type; }; template<class PList, class T> struct Push { typedef PropertyList<T, PList> type; }; template<class PList> struct Pop { typedef typename PList::tail_type type; }; template<class PList, unsigned int N> struct RemoveAt { typedef PropertyList<typename PList::head_type, typename RemoveAt<typename PList::tail_type, N-1>::type> type; }; template<class PList> struct RemoveAt<PList, 0> { typedef typename PList::tail_type type; }; template<int N> struct RemoveAt<NullType, N> { }; template<> struct RemoveAt<NullType, 0> { }; template<class PList, class T, unsigned int N> struct InsertAt { typedef PropertyList<typename PList::head_type, typename InsertAt<typename PList::tail_type, T, N-1>::type> type; }; template<class PList, class T> struct InsertAt<PList, T, 0> { typedef PropertyList<T, PList> type; }; template<class T, unsigned int N> struct InsertAt<NullType, T, N> { }; template<class T> struct InsertAt<NullType, T, 0> { }; template<class PList, unsigned int N> struct ValueAt { static typename TypeAt<PList, N>::type & get(PList & plist) { typedef typename PList::tail_type tail_type; tail_type & tail = plist.tail_value; return ValueAt<tail_type, N-1>::get(tail); } static const typename TypeAt<PList, N>::type & get(const PList & plist) { typedef const typename PList::tail_type tail_type; tail_type & tail = plist.tail_value; return ValueAt<tail_type, N-1>::get(tail); } }; template<class PList> struct ValueAt<PList, 0> { static typename TypeAt<PList, 0>::type & get(PList & plist) { return plist.head_value; } static const typename TypeAt<PList, 0>::type & get(const PList & plist) { return plist.head_value; } }; template<class PList, template<class> class FunctionClass, typename T = NullType> struct Visitor { static void for_each(PList & plist, T & t) { FunctionClass<typename PList::head_type> f(t); f(plist.head_value); typedef typename PList::tail_type tail_type; Visitor<tail_type, FunctionClass, T>::for_each(plist.tail_value, t); } }; template<class PList, template<class> class FunctionClass> struct Visitor<PList, FunctionClass, NullType> { static void for_each(PList & plist) { FunctionClass<typename PList::head_type>()(plist.head_value); typedef typename PList::tail_type tail_type; Visitor<tail_type, FunctionClass, NullType>::for_each(plist.tail_value); } }; template<template<class> class FunctionClass, typename T> struct Visitor<NullType, FunctionClass, T> { static void for_each(NullType & plist, T &) { } }; template<template<class> class FunctionClass> struct Visitor<NullType, FunctionClass, NullType> { static void for_each(NullType & plist) { } }; } // namespace pl #endif // _PROPERTYLIST_HEADER_ demo code #include <iostream> #include <string> #include <boost/type_traits.hpp> #include <PropertyList.h> #include <utility> using namespace std; using namespace boost; using namespace pl; template<typename T> struct Dump { void operator()(const T & t) { cout << t << endl; } }; template<typename T> struct LoadFromStream { LoadFromStream(long stream) : m_stream(stream) { } void operator()(T & t) { cout << "Load <" << t << "> from stream " << m_stream << endl; } long m_stream; }; template<typename PList> void SaveToStream(long stream, const PList & plist) { cout << "Save <" << plist.head_value << "> to stream " << stream << endl; SaveToStream(stream, plist.tail_value); } template<> void SaveToStream<NullType>(long stream, const NullType &) { } void test(void) { typedef PROPERTYLIST_3(int, long , double) MY_PROPS; BOOST_STATIC_ASSERT( (Length<MY_PROPS>::value == 3) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS, 0>::type, int>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS, 1>::type, long>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS, 2>::type, double>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS, 3>::type, NullType>::value) ); typedef Append<MY_PROPS, float>::type MY_PROPS2; BOOST_STATIC_ASSERT( (Length<MY_PROPS2>::value == 4) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS2, 0>::type, int>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS2, 1>::type, long>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS2, 2>::type, double>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS2, 3>::type, float>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS2, 4>::type, NullType>::value) ); typedef Push<MY_PROPS, char>::type MY_PROPS3; BOOST_STATIC_ASSERT( (Length<MY_PROPS3>::value == 4) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS3, 0>::type, char>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS3, 1>::type, int>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS3, 2>::type, long>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS3, 3>::type, double>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS3, 4>::type, NullType>::value) ); typedef Pop<MY_PROPS>::type MY_PROPS4; BOOST_STATIC_ASSERT( (Length<MY_PROPS4>::value == 2) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS4, 0>::type, long>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS4, 1>::type, double>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS4, 2>::type, NullType>::value) ); typedef RemoveAt<MY_PROPS, 1>::type MY_PROPS5; BOOST_STATIC_ASSERT( (Length<MY_PROPS5>::value == 2) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS5, 0>::type, int>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS5, 1>::type, double>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS5, 2>::type, NullType>::value) ); typedef InsertAt<MY_PROPS, short, 1>::type MY_PROPS6; BOOST_STATIC_ASSERT( (Length<MY_PROPS6>::value == 4) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS6, 0>::type, int>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS6, 1>::type, short>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS6, 2>::type, long>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS6, 3>::type, double>::value) ); BOOST_STATIC_ASSERT( (is_same<TypeAt<MY_PROPS6, 4>::type, NullType>::value) ); typedef Append<MY_PROPS, string>::type MY_PROPS7; MY_PROPS7 props; ValueAt<MY_PROPS7, 0>::get(props) = 1; ValueAt<MY_PROPS7, 1>::get(props) = 2; ValueAt<MY_PROPS7, 2>::get(props) = 3.3; ValueAt<MY_PROPS7, 3>::get(props) = "Hello World"; Visitor<MY_PROPS7, Dump>::for_each(props); long stream = 1; Visitor<MY_PROPS7, LoadFromStream, long>::for_each(props, stream); MY_PROPS7 props2 = make_list(10, 20L, 3.1415, string("Hello World")); SaveToStream(stream, props2); } -- Regards, Black Ice Çë²»Òª»ØžŽµœÎÒµÄÓÊÏä ×ÔÓÉ£šliberty£©ÎÞ·ÇŸÍÊÇÕâÑùÒ»ÖÖ³ÐÅµ£ºÃ¿žöÈËœ«»áµÃµœÒ»ÖÖ±£ÕÏ£¬±£ÕÏÎÒÃÇ¿ÉÒÔÓë ÈšÍþ¡¢¶àÊý¡¢Á÷Ë×Œ°ÓßÂÛµÄÓ°ÏìÏà¿¹ºâ¡£ http://www.leoliu.net

1 0

Subscripting and operator()
by Christopher Dawson 05 Aug '03

05 Aug '03

Hi there, I am wrapping a class with an operator()(int, int) which I'd like to make available in Python as a subscript operator, but haven't been able to find any documentation on this nor guess the appropriate .def Is this possible and if so can anyone help? Regards, Chris.

2 2