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Re: [Boost-users] Boost serialization : Possible to append to file?
by smith smithson 12 Sep '06

12 Sep '06

[I sent this in earlier, but for some reason it didn't show up on the list. Apologies if this end's up being a duplicate] --- smith smithson <smith4894(a)yahoo.com> wrote: > > Hello, > > This is regarding the boost serialization library. > Is > it possible to append to a pre-existing archive > file? > i.e. Create an archive file, serialize objects to > it, > close file, and then re-open file and append more > serialized objects to it. Is this allowed? > > -Thanks! > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam > protection around > http://mail.yahoo.com > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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boost filesystem using dev-cpp.
by chun ping wang 12 Sep '06

12 Sep '06

Alright i have a simple problem getting dev-cpp ide compiler to configure to run boost filesystem. I get the following error in this code. #include <boost/filesystem/operations.hpp> #include <boost/filesystem/path.hpp> #include <iostream> int main(int argc, char* argv[]) { }

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boost-1-33-1 compilation problem with msvc 7/1 sp1
by Serge Skorokhodov 12 Sep '06

12 Sep '06

Hello, I'm not sure wether this has been already discussed. wave library in Boost 1-33-1 distribution fails to compile with msvc 7.1 sp1 (compiler version 13.10.6030) with the following error: vc-C++ bin\boost\libs\wave\build\libboost_wave.lib\vc-7_1\debug\rtti-off\runtime-link-static\instantiate_cpp_grammar.obj instantiate_cpp_grammar.cpp c:\boost_1_33_1\boost\spirit\core\composite\alternative.hpp(60) : fatal error C1002: compiler is out of heap space in pass 2 "cl" /Zm800 -nologo /EHsc -c /Z7 /Od /Ob0 /EHsc /MLd /Op /wd4675 /Zc:forScope /Zc:wchar_t -I"bin\boost\libs\wave\build" -I"C:\boost_1_33_1" -I"C:\Program Files\Microsoft VisualStudio .NET 2003\VC7\include" -I"C:\boost_1_33_1" -Fo"bin\boost\libs\wave\build\libboost_wave.lib\vc-7_1\debug\rtti-off\runtime-link-static\instantiate_cpp_grammar.obj" -Tp"C:\boost_1_33_1\libs\wave\build\../src/instantiate_cpp_grammar.cpp" ...failed vc-C++ bin\boost\libs\wave\build\libboost_wave.lib\vc-7_1\debug\rtti-off\runtime-link-static\instantiate_cpp_grammar.obj... Increasing the number for /Zm option does not help. -- Best regards, Serge mailto:serge.skorokhodov@tochka.ru

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Re: [Boost-users] [graph] breadth_first_search with a structure
by boost＠daniel-gohlke.de 12 Sep '06

12 Sep '06

Hello Stephan, Am 12.09.2006 um 12:42 Uhr haben Sie geschrieben: > typedef adjacency_list < vecS, vecS, undirectedS, tVertex> tGraph; > > after that you get a property map from the graph: > typedef property_map<graph_t, long tVertex::*>::type tDistanceMap; I think "graph_t" should be "tGraph", shouldn't ist? When compiling your example, the VC++ compiler puts a lot of Errors: :\daten\Programme\boost/pending/property.hpp(40) : error C2039: 'kind' : is not a member of '`global namespace'' H:\daten\Programme\boost/graph/properties.hpp(198) : see reference to class template instantiation 'boost::property_kind<long dreiDmatrix::tVertex::*>' being compiled H:\daten\Programme\Matrizen\dreiDmatrix.cpp(255) : see reference to class template instantiation 'boost::property_map<class boost::adjacency_list<struct boost::vecS,struct boost::vecS,struct boost::undirectedS,struct dreiDmatrix::tVertex,str uct boost::no_property,struct boost::no_property,struct boost::listS>,long dreiDmatrix::tVertex::*>' being compiled ... and so on. What`s wrong? Thank you.

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Problems when compiling with Xcode
by Jaime Rios 12 Sep '06

12 Sep '06

Hi folks, This might be a silly question, or one that has already been addressed in the past, but here goes anyway. I have Xcode 2.4 and recently, I had to compile a static library for Universal code. I had to install the 10.2.8 Mac OS X sdk and when I went to compile my library, I got 66 errors :( Here is the first error I saw: from /Users/me/Documents/development/CPP/FMPlugIns/ FM85/FMPlugInSDK/plugin_u/Source/FMPlugInExample.cpp:41: from ../Libraries/FMWrapper.framework/Headers/ FMXTypes.h:15, from ../Libraries/FMWrapper.framework/Headers/ FMXClient.h:15, from /Developer/SDKs/MacOSX10.2.8.sdk/usr/include/ gcc/darwin/3.3/c++/stdexcept:45, from /Developer/SDKs/MacOSX10.2.8.sdk/usr/ include/gcc/darwin/3.3/c++/string:47, from /Developer/SDKs/MacOSX10.2.8.sdk/usr/ include/gcc/darwin/3.3/c++/bits/char_traits.h:46, from /Developer/SDKs/MacOSX10.2.8.sdk/usr/ include/gcc/darwin/3.3/c++/bits/fpos.h:45, from /Users/jaimerios/Documents/development/ cpp/Tools/boost_1_33_1/boost/compatibility/cpp_c_headers/cwchar:8, from /usr/include/wchar.h:71, from /usr/include/_types.h:27, from /usr/include/sys/_types.h:27, In file included from /usr/include/machine/_types.h:26, /usr/include/ppc/_types.h:73: error: conflicting types for `typedef union __mbstate_t __mbstate_t' The last error is the interesting one. I am assuming that the Boost sdk is forcing my compiler to look in the /usr/include path for the string header file instead of the Mac OS X 10.2.8 sdk path. Is this assumption correct? If so, how do I correct this problem? -Jaime

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[graph] breadth_first_search with a structure
by boost＠daniel-gohlke.de 12 Sep '06

12 Sep '06

Hello, I have a problem with the breadth_first_search. I read the documentation and examples an can't find a solution for my problem. In order breadth_first_search uses a bfs_discovery_visitor<unsigned int * > vis(&distanceSet[0]);. This distance vector storing all distances. So, now I need more then a vector. I want use a struct for storing the distances and later some other stuff e.g. probability of distances and cumulative probabilitys. I tried several code, but get every time errors from VC++ compiler. Can anybody tell me, how do I handle this vector<struct *>. The second question is, can I abort the further evaluation of distances, if any theshold is reached? The graph has about 57000 vertices an every vertice has about 6 edges. I am interested only for the vertices in a given range (e.g. 100). Now I get all distances and copy_if the vector of distances, if the given threshold isn't reached. This is fast enough for one vertice to all others, but the program calculates the distances for each of 57000 vertices. 20 minutes are too slow. Thanks for helping me.

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Re: [Boost-users] Library Interface Design
by Oliver.Kowalke＠qimonda.com 12 Sep '06

12 Sep '06

Hello Scott, > I've always been a big fan of the "don't let users create > objects they can't really use" philosophy. I also prefer this style because it could be cumbersome to detect the source of exceptions thrown by half-initialized objects in complex applications. If half-initialized objects are allowed the library developer has to provide descriptive exceptions. with best regards, Oliver

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array of strings in boost python
by ctrembla＠pcigeomatics.com 12 Sep '06

12 Sep '06

Hi, newbie in python and boost::python I have a method in c++ that returns a vector of strings, how can i expose this method in python, and how should i use it in python class A { public: std::vector<std::string> getName(); }; BOOST_PYTHON_MODULE(pysession) { class_<A>("A") .def("GetName" ,&A::getName) } now in python how could i call the function getName() ? here is my error in python TypeError: No to_python (by-value) converter found for C++ type: class std::vect or<class std::basic_string<char,struct std::char_traits<char>,class std::allocat or<char> >,class std::allocator<class std::basic_string<char,struct std::char_tr aits<char>,class std::allocator<char> > > > not valid thanks, Charles.

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Re: [Boost-users] 3 times slower than c++
by Qinfeng(Javen) Shi 11 Sep '06

11 Sep '06

Dear all, We are writing a python toolbox and wrapping it from c++ is much faster than pure python. But my wrapped c++ code(called in python) is 3 times(not plus a constant time) slower than the orignial c++ one. I think the difference should be a constant not a factor. Because all the computation has been taken in *.so, the extra time cost is the time python load it at the beginning. Is that right? Any opinion or suggestion about why or how to speed it up? Best wishes! Javen On 9/11/06, boost-users-request(a)lists.boost.org < boost-users-request(a)lists.boost.org> wrote: > > Send Boost-users mailing list submissions to > boost-users(a)lists.boost.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.boost.org/mailman/listinfo.cgi/boost-users > or, via email, send a message with subject or body 'help' to > boost-users-request(a)lists.boost.org > > You can reach the person managing the list at > boost-users-owner(a)lists.boost.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Boost-users digest..." > > > Today's Topics: > > 1. Re: having a problem seeding random number generator. (Jim Ingram) > 2. Re: [string_algo] wildcard support? (Pavol Droba) > 3. Re: Absolute Quanfusion : was Re: [fusion] transform a vector > of values to refs (Andy Little) > 4. Properties (newbie) (Olivier Tournaire) > 5. 3 times slower than c++? (Qinfeng(Javen) Shi ) > 6. Re: 3 times slower than c++? (Andy Little) > 7. Re: Lock pointer implementation (Mattias Br?ndstr?m) > 8. Re: Lock pointer implementation (Mattias Brandstrom) > 9. Re: Link error with boost regex and STLport (Maik Beckmann) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 10 Sep 2006 15:38:41 +0000 (UTC) > From: Jim Ingram <ingramj(a)gmail.com> > Subject: Re: [Boost-users] having a problem seeding random number > generator. > To: boost-users(a)lists.boost.org > Message-ID: <loom.20060910T172921-895(a)post.gmane.org> > Content-Type: text/plain; charset=us-ascii > > Daniel James <daniel_james <at> fmail.co.uk> writes: > > > The problem is that 'variate_generator' stores a copy of the engine, not > > a reference. > > Wow. You'd think that between the docs, the header files, and the example > code, > I would have caught that. It does make a lot more sense to have the > generator > and distribution encapsulated inside a variate_generator instead of > maintaining > them seperately. > > Thanks for pointing that out. > > -- > Jim > > > > ------------------------------ > > Message: 2 > Date: Sun, 10 Sep 2006 20:29:09 +0200 > From: Pavol Droba <droba(a)topmail.sk> > Subject: Re: [Boost-users] [string_algo] wildcard support? > To: boost-users(a)lists.boost.org > Message-ID: <45045975.1090701(a)topmail.sk> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Hi, > > Andriy Tylychko (mail.ru) wrote: > > > > > > To community and especially to Pavol Droba as the author of string_algo: > > What do you think about popularity of wildcards as the tool for > end-users? > > Is it worth to add wildcards support to the library? To what library? Is > the > > boost-development mailing list a better place for this discussion? > > I can only express my personal opinion here and that is : the wildcards > should not be a directly supported in string_algo library. > > Reason is simple: the functionality provided by wildcards is superseeded > by regex in all respects. In addition, as you have explained in your > previous mail, it is easy to convert a wildcard to a regex. > > I can't say if the support could be incorporated into Boost.Regex. > This library already support several syntaxes, so wildcards could be > just another variant. But this is more question to John Maddock. > > You can also try to cleanup your conversion utility and offer it to > boost, to get a response from whole comunity. > > Regards, > Pavol > > > ------------------------------ > > Message: 3 > Date: Sun, 10 Sep 2006 19:33:32 +0100 > From: "Andy Little" <andy(a)servocomm.freeserve.co.uk> > Subject: Re: [Boost-users] Absolute Quanfusion : was Re: [fusion] > transform a vector of values to refs > To: boost-users(a)lists.boost.org > Message-ID: <ee1lpe$trq$1(a)sea.gmane.org> > Content-Type: text/plain; format=flowed; charset="utf-8"; > reply-type=original > > > "Joel de Guzman" <joel(a)boost-consulting.com> wrote in message > news:edv1e0$n73$1@sea.gmane.org... > > > > > Sounds good. Okidoki. > > Great. I will see if I can get on with it, rather than spend more time > mucking > about with fusion ;-) > > regards > Andy Little > > > > > ------------------------------ > > Message: 4 > Date: Sun, 10 Sep 2006 21:57:17 +0200 > From: Olivier Tournaire <olitour(a)yahoo.fr> > Subject: [Boost-users] Properties (newbie) > To: boost-users(a)lists.boost.org > Message-ID: <45046E1D.7040709(a)yahoo.fr> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Hi all, > > I am a new boost user (2 days old ...). I just want to know a few things. > > 1. I use an adjacency_list with my own properties to store my graph. I > just want to know if it is possible to manipulate directly the > properties' values. At the moment, I use get(...) to obtain the > property, make my change, and use put(...) to set the new value. > > 2. My graph cannot contain parallel edges, so I use a setS. However, the > documentation says that listS or vecS is more efficient in time and > space complexity. Is it possible to use std::vector or std::list and to > disallow parallele edges ? > > Thanks in advance > Olivier > > > ------------------------------ > > Message: 5 > Date: Mon, 11 Sep 2006 09:54:43 +1000 > From: "Qinfeng(Javen) Shi " <shiqinfeng(a)gmail.com> > Subject: [Boost-users] 3 times slower than c++? > To: boost-users(a)lists.boost.org > Message-ID: > <fe76f74b0609101654o12a61256w3b6f7c4ce24cd55a(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Dear all, > > I wrapped a c++ code into python. It works but it is 3 times slower than > the > orignial c++ one. > Is that normal? Is there something I can do to speed it up? > > Thanks! > > -- > Qinfeng(Javen) Shi > > Research School of Information Sciences and Engineering > Australian National University > Locked Bag 8001 > Canberra ACT 2601 >

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bcp not found ?
by Shintaro Fujiwara 11 Sep '06

11 Sep '06

Hi. I tried to extract some subset of boost by bcp command but couldn't make it. [root@mama lib]# bcp --boost="/usr/local/lib" boost/regex.hpp "/home/dir/projects/segatex2.15" -bash: bcp: command not found [root@mama lib]# rpm -qa|grep boost boost-jam-3.1.13-1 boost-devel-1.33.1-5 boost-doc-1.33.1-5 boost-1.33.1-5 What's wrong or what's missing? Thanks in advance.

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