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Buffer overrun when building read_graphviz using VC7.1
by Paul De La Musica 18 May '09

18 May '09

Hi, I got two buffer overrun errors building Boost 1.38.0 on MSVC 7.1.3088. One of them occurred while building the library to be used with read_graphviz. Is there a place to download a pre-built libbgl-viz.lib? Paul

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PropertyTree's XML parsers survey
by Tan, Tom (Shanghai) 18 May '09

18 May '09

>From: "Robert Ramey" <ramey(a)rrsd.com> >Subject: Re: [Boost-users] PropertyTree's XML parsers survey >The serialization library has been using the spirit library >for parsing XML for years. This is for both utf-8 and wide characters > >Robert Ramey I just played with the examples demo_xml_load along with boost 1.39. As I mainly use xml as configuration files. I found some features I really like are missing: - often I need to edit the xml file manually with 3rd tools(gedit, kate notepad++ etc) other than the app itself. When saving back with those editors, they may add some BOM bytes(0xFFFE for UTF16LE, 0xFEFF for UTF16BE, 0xefbbbf for utf8) and replace the line-breakers(0x0a, 0x0a0d) with another fashion(e.g 0x0d0a -> 0x0a) the system default. In such cases, I wish boost.serialize would detect and ignore them as the real data the xml carries do NOT change. - I often embed some comment nodes inside the xml to facilitate the manual edit. E.g, enumeration of accepted value some fields. I wish boost.serialize ignores them when parsing, and embbded them when saving(is this possible). - I wish only the hierarchy not the order or nodes matters. Ex. <a> <first = "1st"> <second = "2nd"> </a> Would be equivalent to <a> <second = "2nd"> <first = "1st"> </a> It seems not to be support yet. On the whole, my impression is boost.serialize imposes some restrictions (orders for instance) that make sense to plain text files, but limits the buil-in flexibility that coming with xml.

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Re: [Boost-users] [serialization] xml tag names and exceptions
by Ashley Smith 18 May '09

18 May '09

> AMDG > > Ashley Smith wrote: > >> Hi, I've been using boost for a while now and it's brilliant! :D >> >> Anyway, I'm using serialization in my code and was wondering why I was >> catching an exception where the what() reported "uninitialized >> exception". Eventually I worked it out (After much debugging) that I was >> catching the exception like this: >> >> } catch( std::exception & e ) { >> std::cout << e.what() << std::endl; >> >> I found out that my xml tags could not have namespace qualifiers in them >> (I.e. "blah::abc" would not work) and that it would throw a >> boost::archive::xml_archive_exception. This obviously didn't work with >> an std::exception and defaulted to an uninitialised exception. So my >> question is: am I catching the exceptions in the wrong way? Whats the >> right way? Should I use a more specific boost exception class? >> >> > > Can you catch xml_archive_exception instead of std::exception? > It almost sounds like the exception has been sliced. > > In Christ, > Steven Watanabe > Thanks for replying. Thats strange, it catches the boost::archive::xml_archive_exception, but it is still set as an uninitialized exception. I'm sure this is what is being thrown though. I think the source of the exception is in boost/archive/impl/basic_xml_oarchive.ipp Thanks

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MPL if_ not following true branch
by Cory Nelson 18 May '09

18 May '09

This code doesn't seem to ever follow the true branch of the if_... it's like the eval_if is clobbering it. Can someone tell me what I'm doing wrong (other than not using a map.. this is a reduction of some other code that can't use a map)? #include <iostream> #include <typeinfo> #include <boost/mpl/if.hpp> #include <boost/mpl/eval_if.hpp> #include <boost/mpl/identity.hpp> #include <boost/type_traits/is_same.hpp> #include <boost/static_assert.hpp> template<typename T> struct choose_type { struct int_tag {}; struct float_tag {}; template<typename InvalidT> struct invalid_type_specified { BOOST_STATIC_ASSERT(sizeof(InvalidT) == 0); }; typedef typename boost::mpl::if_< boost::is_same<T, int>, int_tag, typename boost::mpl::eval_if< boost::is_same<T, float>, boost::mpl::identity<float_tag>, invalid_type_specified<T> >::type >::type type; }; int main() { std::cout << typeid(choose_type<int>::type).name() << std::endl; return 0; } -- Cory Nelson

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boost compression
by einav_i2 18 May '09

18 May '09

Hi! Can anyone send an exmaple of a string to string compression (not file) using boost iostreams and gzip? Thanks, Einav -- View this message in context: http://www.nabble.com/boost-compression-tp23482602p23482602.html Sent from the Boost - Users mailing list archive at Nabble.com.

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Re: [Boost-users] PropertyTree's XML parsers survey
by Tan, Tom (Shanghai) 18 May '09

18 May '09

>The serialization library has been using the spirit library >for parsing XML for years. This is for both utf-8 and wide characters >Robert Ramey Thanks for this info, I'll dig into that. Some quick questions though. There are two things that I prefer XML configurations to other formats: - I can manually edit the config file with other editors(notpad++, kate, gedit etc). However, different text editors may add additional BOM bytes(0xFFFE for UTF16LE, 0xFEFF for UTF16BE, 0xefbbbf for utf8) when saving back, does the serialization library detects them and ignore them when it sees them? - unlike JSON, I can embed comment nodes inside the XML to make it more readable, ex. , it this possible with boost.serialization?

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[Boost] [Test] [1.38] "can't use testing tools before framework is initialized"
by Greg Christopher 18 May '09

18 May '09

Hi, I am trying to integrate boost.test into an existing test program with its own framework. Therefore I'd like to use that program's main. I am currently running into this runtime error when calling BOOST_WARN_MESSAGE(1, "string"). I have tried three different things to avoid this condition: 1) I declared a TEST_SUITE using the BOOST_AUTO_TEST_SUITE() and END() macros. Probably not what I want because I want my own main to keep control, but figured it would generate a main that would allow the initialization to happen. 2) I called init_unit_test_suite( argc, argv ). Even though it was called, I am still getting this. 3) I defined a cpp_main(). This never got called. I was hoping that the existence of this symbol would cause initialization to happen elsewhere. My desired control flow is to have this test program in control and to use the BOOST logging tools. I am trying to slip in boost.test with a minimum of changes to this program. I have hooked its logging function to call boost logging facilities instead; just can't get past this problem. Thanks for any help! Greg

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[boost.filesystem] remove issue
by Sean Farrow 17 May '09

17 May '09

Hi: I am using the following code with boost.filesystem: size_t origsize = strlen(argv[0]) + 1; size_t convertedChars = 0; wchar_t wcstring[1024]; mbstowcs_s(&convertedChars, wcstring, origsize, argv[0], strlen(argv[0])); boost::filesystem::wpath path(wcstring); path.filename() =L"compilation date.txt"; if (boost::filesystem::exists(path)) // boost::filesystem::remove(path); I have defined: #define BOOST_FILESYSTEM_NO_DEPRECATED The line that causes probles is: // boost::filesystem::remove(path); Anyone got any ideas why this line causes a window error report to be generated. For reference I'm including: #include <stdlib.h> #include <fstream> #include <boost/date_time/gregorian/gregorian.hpp> #include <boost/filesystem/path.hpp> #include <boost/filesystem/operations.hpp> #include <string> Cheers Sean. __________ Information from ESET NOD32 Antivirus, version of virus signature database 4081 (20090517) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com

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[serialization] xml tag names and exceptions
by Ashley Smith 17 May '09

17 May '09

Hi, I've been using boost for a while now and it's brilliant! :D Anyway, I'm using serialization in my code and was wondering why I was catching an exception where the what() reported "uninitialized exception". Eventually I worked it out (After much debugging) that I was catching the exception like this: } catch( std::exception & e ) { std::cout << e.what() << std::endl; I found out that my xml tags could not have namespace qualifiers in them (I.e. "blah::abc" would not work) and that it would throw a boost::archive::xml_archive_exception. This obviously didn't work with an std::exception and defaulted to an uninitialised exception. So my question is: am I catching the exceptions in the wrong way? Whats the right way? Should I use a more specific boost exception class? Thank-you! - Ash

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[statechart] Several questions
by Michael Crawford 17 May '09

17 May '09

I'm evaluating Boost.Statechart for possible use in a turn-based strategy type game. It's very promising so far, I just would just like a little clarification on a few things. 1. Is there a clean way to seperate the definition of a state from the definition of its initial inner state? Say we have // StatePlayGame.h #include "MyStateMachine.h" class StateGameStartup; class StatePlayGame : public boost::statechart::state<StatePlayGame, MyStateMachine, StateGameStartup> { //... }; // StateGameStartup.h #include "StatePlayGame.h" class StateGameStartup : public boost::statechart::state<StateGameStartup, StatePlayGame> { //... }; It appears that any translation unit that includes StatePlayGame.h also requires StateGameStartup.h in order to compile - obviously a less than ideal situation. 2. Is it possible to pass parameters to a state's constructor? Going with the little example above let's say that StateGameStartup asks the player how many enemies he wants to fight, and then transitions to StateGameRunning, which needs that number. Can it be passed by StateGameRunning's ctor or is it just required that states can only share information via their context? Cheers, MC

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I can't build boost!
by Robert Dailey 17 May '09

17 May '09

What's going on? For some reason I can no longer build boost. I'm trying to build version 1.39 using bjam. The same command worked just fine on 1.38: D:\IT\personal\asl_editor\temp\boost_1_39_0>bjam --toolset=msvc --layout=system link=static threading=multi debug release stage

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Trouble reinstalling boost
by Simon Pickles 17 May '09

17 May '09

Hi, I had a nice build system set up on my VM ubuntu 8.10 server until I broke the VM. :) After rebuild the VM I am obviously reinstalling all the packages. Boost Python is causing me trouble. I built it from svn using bjam, boost 1_40_0. I can compile my python extension without error but when I run it the python code that uses it, I get: ImportError: libboost_python-gcc43-d-1_40.so.1.40.0: cannot open shared object file: No such file or directory I have this file on my system, and have copied it to /usr/local/lib simon@fenixurth:~/WorkingCopies/server/extended$ locate libboost_python-gcc43-d-1_40.so.1.40.0 /home/simon/source/boost/bin.v2/libs/python/build/gcc-4.3.2/debug/libboost_python-gcc43-d-1_40.so.1.40.0 /home/simon/source/boost/stage/lib/libboost_python-gcc43-d-1_40.so.1.40.0 /home/simon/WorkingCopies/server/extended/libboost_python-gcc43-d-1_40.so.1.40.0 /usr/local/lib/libboost_python-gcc43-d-1_40.so.1.40.0 Why is this not found? Thanks Simon

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[boost-users] istream_iterator question
by Max 17 May '09

17 May '09

Hello, I don't know why the following code does not work as expected. I hope the guru's here could lend me a hand. For a test data file: 3 1 2 3 4 5 6 2 1.2 4.3 234.2 3.5656 67.88 345.3 <eof> and 2 simple test helper class: struct a { int i, j; }; std::istream& operator>>(std::istream& in, a & p) { in >> p.i >> p.j; return in; } std::ostream& operator<<(std::ostream& out, const a & p) { out << p.i << " " << p.j; return out; } struct b { float i, j, k; }; std::istream& operator>>(std::istream& in, b & p) { in >> p.i >> p.j >> p.k; return in; } std::ostream& operator<<(std::ostream& out, const b & p) { out << p.i << " " << p.j << " " << p.k; return out; } Here is version 1, quite trivial and works just ok. std::ifstream is("./test.txt") int n; is >> n; std::cout << "n=" << n << "\n"; for(int i=0; i<n; i++) { a tmp; is >> tmp; va.push_back(tmp); } std::copy(va.begin(), va.end(), std::ostream_iterator<a>(std::cout, "\n")); is >> n; std::cout << "n=" << n << "\n"; for(int i=0; i<n; i++) { b tmp; is >> tmp; vb.push_back(tmp); } std::copy(vb.begin(), vb.end(), std::ostream_iterator<b>(std::cout, "\n")); The output is: n=3 1 2 3 4 5 6 n=2 1.2 4.3 234.2 3.5656 67.88 345.3 With version 2 using istream_iterator, the behavior is strange: is >> n; std::cout << "n=" << n << "\n"; std::copy_n(std::istream_iterator<a>(is), std::istream_iterator<a>(), n, std::back_inserter(va)); std::copy(va.begin(), va.end(), std::ostream_iterator<a>(std::cout, "\n")); is >> n; std::cout << "n=" << n << "\n"; std::copy_n(std::istream_iterator<b>(is), std::istream_iterator<b>(), n, std::back_inserter(vb)); std::copy(vb.begin(), vb.end(), std::ostream_iterator<b>(std::cout, "\n")); copy_n is defined as: template <class InputIterator, class Size, class OutputIterator> OutputIterator copy_n( InputIterator first, InputIterator last, Size n, OutputIterator result) { // copies the first `n' items from `first' to `result'. Returns // the value of `result' after inserting the `n' items. // it ends before n iterations, if the last iterator is reached while( n-- && first != last) { *result = *first; ++first; ++result; } return result; } The output is now: n=3 1 2 3 4 5 6 n=3 I've checked the code for several times and just not found the answer. I'm using VS2008SP1 on WinXP/SP1 Thanks for your help. B/Rgds Max

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doc on how to generate pdf doc
by Maurizio Vitale 17 May '09

17 May '09

anybody can point me to documentation on how to generate boost documentation in pdf format for printing and off-line reading? the library I'm interested in (proto) has documentation in quickbook format and I haven't found anywhere documentation on how to generate pdf. Eric has been very nice and provided pdf for many versions in the vault, but I'd like to learn to do it myself. Thanks a lot, Maurizio

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ASIO Tutorial 5 - Synchronising handlers in a multithreaded programs - Doesn't use both threads for processing
by mark 17 May '09

17 May '09

Using the code from http://www.boost.org/doc/libs/1_39_0/doc/html/boost_asio/tutorial/tuttimer5… with a few extra cout's for extra info. If you print out the thread IDs of at the start of print1 and print2 you'll see that both methods are actually using the same thread. ie two threads gets created but only one does any work. I'm printing the thread ID's via std::cout << "print1 " << boost::this_thread::get_id() << std::endl; std::cout << "print2 " << boost::this_thread::get_id() << std::endl; at the top of print 1 and print 2. I first noticed this when I was single line stepping through the code trying to work out how the second thread could possibly be doing anywork since t.join() is called after io.run(). Also if I comment out io.run() the program still works the same as before, except its the second thread doing all the processing. Compiler MSVC 9.0, happens on both debug and release.

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multi-array data ownership
by gtsml owevwr 16 May '09

16 May '09

Hi, I want to use multi-array but the original data is coming from, let say, a std::vector<float>. The data is quite big, do I need to copy it into a multi-array? Or maybe I can use a "view" as a proxy on top of the original data and therefore avoid a costly copy? Thanks, Frank

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[accumulators] density: empty values
by Robert Kubrick 16 May '09

16 May '09

I have the following program: #include <iostream> #include <boost/accumulators/accumulators.hpp> #include <boost/accumulators/statistics/stats.hpp> #include <boost/accumulators/statistics/density.hpp> using namespace boost; using namespace boost::accumulators; int main() { typedef iterator_range<std::vector<std::pair<double, double> >::iterator > histogram_type; accumulator_set<double, features<tag::density> > acc(tag::density::num_bins = 20, tag::density::cache_size = 10); // push in some data ... acc(0.1); acc(1.2); acc(2.3); acc(3.4); acc(4.5); acc(5.4); acc(5.5); acc(5.5); acc(10); // Display the results ... histogram_type hist = density(acc); for( int i = 0; i < hist.size(); i++ ) std::cout << "Bin lower bound: " << hist[i].first << ", Value: " << hist[i].second << std::endl; return 0; } Bin values and indexes don't seem to be initialized: $ acc_dist Bin lower bound: 0, Value: 0 Bin lower bound: 0, Value: 0 Bin lower bound: 0, Value: 0 Bin lower bound: 0, Value: 0 Bin lower bound: 0, Value: 0 Bin lower bound: 0, Value: 0 ...

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Range checked variable or class
by Ryan McConnehey 16 May '09

16 May '09

Is there a boost library or utility that can create a variable with a maximum and minimum acceptable value? Ryan

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intrusive::slist, MPL, Sun CC
by Chris Hite 16 May '09

16 May '09

intrusive::slist work with Sun CC? I notice that it uses some MPL. Does MPL generally not work with Sun CC? CC: Sun C++ 5.9 SunOS_sparc Patch 124863-12 2009/04/21 CC -I/development/tango/current/misc/boost/boost_1_39_0/SunOS/include/boost-1_39 -c test.cxx -o test.o test.cxx: Christopher Hite RTS Realtime Systems Software GmbH, Rembrandtstrasse 13, D-60596 Frankfurt am Main T: +49.69.61009.0 / F: +49.69.61009.181 Sitz: Frankfurt am Main - HRB 84467 Amtsgericht Frankfurt am Main Geschäftsführer: Steffen Gemuenden, Igor Sluga www.rtsgroup.net This email and any attachments are for the exclusive and confidential use of the intended recipient. If you are not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, please do not read, distribute or take action in reliance upon this message. If you have received this in error, please notify me immediately by return email and promptly delete this message and its attachments from your computer system. ------------------------------------------------------- #include <boost/intrusive/slist.hpp> using namespace boost::intrusive; struct CalcEntry: public slist_base_hook<none,none,none> {}; void foo(){ typedef slist<CalcEntry,cache_last<true> > CalcList; CalcList _calcList; } ------------------------------------------------------- "/development/tango/current/misc/boost/boost_1_39_0/SunOS/include/boost-1_39/boost/intrusive/slist.hpp", line 121: Error: pointer is not a member of boost::intrusive::detail::generic_hook<boost::intrusive::get_slist_node_algo<void*>, boost::intrusive::default_tag, 1, 2>. "/development/tango/current/misc/boost/boost_1_39_0/SunOS/include/boost-1_39/boost/intrusive/slist.hpp", line 1943: Where: While specializing "boost::intrusive::slist_impl<boost::intrusive::slistopt<boost::intrusive::detail::generic_hook<boost::intrusive::get_slist_node_algo<void*>, boost::intrusive::default_tag, 1, 2>, unsigned, 1, 0, 1>>". "/development/tango/current/misc/boost/boost_1_39_0/SunOS/include/boost-1_39/boost/intrusive/slist.hpp", line 1943: Where: Specialized in boost::intrusive::slist<CalcEntry, boost::intrusive::cache_last<1>, boost::intrusive::none, boost::intrusive::none, boost::intrusive::none, boost::intrusive::none>. "test.cxx", line 9: Where: Specialized in non-template code. "/development/tango/current/misc/boost/boost_1_39_0/SunOS/include/boost-1_39/boost/intrusive/slist.hpp", line 122: Error: const_pointer is not a member of boost::intrusive::detail::generic_hook<boost::intrusive::get_slist_node_algo<void*>, boost::intrusive::default_tag, 1, 2>. "/development/tango/current/misc/boost/boost_1_39_0/SunOS/include/boost-1_39/boost/intrusive/slist.hpp", line 1943: Where: While specializing "boost::intrusive::slist_impl<boost::intrusive::slistopt<boost::intrusive::detail::generic_hook<boost::intrusive::get_slist_node_algo<void*>, boost::intrusive::default_tag, 1, 2>, unsigned, 1, 0, 1>>". "/development/tango/current/misc/boost/boost_1_39_0/SunOS/include/boost-1_39/boost/intrusive/slist.hpp", line 1943: Where: Specialized in boost::intrusive::slist<CalcEntry, boost::intrusive::cache_last<1>, boost::intrusive::none, boost::intrusive::none, boost::intrusive::none, boost::intrusive::none>. "test.cxx", line 9: Where: Specialized in non-template code. "/development/tango/current/misc/boost/boost_1_39_0/SunOS/include/boost-1_39/boost/intrusive/slist.hpp", line 123: Error: iterator_traits is not a member of std. "/development/tango/current/misc/boost/boost_1_39_0/SunOS/include/boost-1_39/boost/intrusive/slist.hpp", line 1943: Where: While specializing "boost::intrusive::slist_impl<boost::intrusive::slistopt<boost::intrusive::detail::generic_hook<boost::intrusive::get_slist_node_algo<void*>, boost::intrusive::default_tag, 1, 2>, unsigned, 1, 0, 1>>". "/development/tango/current/misc/boost/boost_1_39_0/SunOS/include/boost-1_39/boost/intrusive/slist.hpp", line 1943: Where: Specialized in boost::intrusive::slist<CalcEntry, boost::intrusive::cache_last<1>, boost::intrusive::none, boost::intrusive::none, boost::intrusive::none, boost::intrusive::none>. "test.cxx", line 9: Where: Specialized in non-template code. "/development/tango/current/misc/boost/boost_1_39_0/SunOS/include/boost-1_39/boost/intrusive/slist.hpp", line 123: Error: A declaration does not specify a tag or an identifier. ......

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Compile problems with instrusive::slist::push_back
by Johannes Gajdosik 16 May '09

16 May '09

From this piece of code ---------------------------------------- #include <boost/intrusive/slist.hpp> class Node : public boost::intrusive::slist_base_hook<> { public: Node(int x) : x(x) {} int x; }; typedef boost::intrusive::slist<Node> List; int main(int argc,char *argv[]) { List list; Node n1(1234); Node n2(5678); list.push_front(n1); list.push_back(n2); return 0; } ------------------------------------------ I get the following error: johannes@pc1:~/Progs/Components/Boost> g++ IntrusiveTest1.C -Iboost_1_39_0 boost_1_39_0/boost/intrusive/slist.hpp: In member function 'void boost::intrusive::slist_impl<Config>::push_back(typename std::iterator_traits<typename boost::intrusive::detail::eval_if_c<boost::intrusive::slist_impl<Config>::external_value_traits, boost::intrusive::detail::eval_value_traits<typename Config::value_traits>, boost::intrusive::detail::identity<typename Config::value_traits> >::type::pointer>::reference) [with Config = boost::intrusive::slistopt<boost::intrusive::detail::base_hook_traits<Node, boost::intrusive::slist_node_traits<void*>, safe_link, boost::intrusive::default_tag, 2>, long unsigned int, true, false, false>]': IntrusiveTest1.C:16: instantiated from here false>boost_1_39_0/boost/intrusive/slist.hpp:382: error: invalid false>application of 'sizeof' to incomplete type false>'boost::STATIC_ASSERTION_FAILURE<false>' IntrusiveTest1.C:16: false>instantiated from here false>boost_1_39_0/boost/intrusive/slist.hpp:382: error: invalid false>application of 'sizeof' to incomplete type false>'boost::STATIC_ASSERTION_FAILURE<false>' This is boost_1_39_0. I use operating system johannes@pc1:~/Progs/Components/Boost> uname -a Linux pc1 2.6.22.19 #1 PREEMPT Fri Apr 10 00:41:29 CEST 2009 x86_64 AMD Athlon(tm) 64 Processor 3000+ AuthenticAMD GNU/Linux and compiler gcc version 4.3.2 (Gentoo 4.3.2-r3 p1.6, pie-10.1.5) I cannot understand, why list.push_front(n1) compiles, while list.push_back(n2) fails to compile. Thanks in advance for your help. Yours, Johannes Gajdosik

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Re: [Boost-users] iterators must go
by John Dlugosz 15 May '09

15 May '09

> Date: Wed, 13 May 2009 02:18:07 -0400 > From: Scott McMurray <me22.ca+boost(a)gmail.com> > Subject: Re: [Boost-users] iterators must go > To: boost-users(a)lists.boost.org > Message-ID: > <fa28b9250905122318s3460e1dam5d624160d95ced5(a)mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > On Sun, May 10, 2009 at 09:24, Neal Becker <ndbecker2(a)gmail.com> wrote: > > Interesting presentation: > > > > http://www.boostcon.com/site- > > media/var/sphene/sphwiki/attachment/2009/05/08/iterators-must-go.pdf > > > > Very persuasive, but it's careful to touch only the examples that look > nice. Note, for example, that every range was a whole container. > > The three-iterators part was somewhat handwaved-over as well. Take > this bit of current code, for example: > > auto i = find(c.begin(), c.end(), some_pred()); > rotate(c.begin(), i, c.end()); > > How do you do that nicely with ranges, when he has find returning a > range? (Since right now, it implicitly actually returns 2 ranges.) > > And how does insertion work? Do we still need to keep the iterators > around for insertion position? > > I'd love to see the finicky bits worked out, though, since I do like > the idea. > > ~ Scott Any place you really want a single iterator, a range of one value would work. For appending or streaming out, you really want the concept of an open-ended range. --John TradeStation Group, Inc. is a publicly-traded holding company (NASDAQ GS: TRAD) of three operating subsidiaries, TradeStation Securities, Inc. (Member NYSE, FINRA, SIPC and NFA), TradeStation Technologies, Inc., a trading software and subscription company, and TradeStation Europe Limited, a United Kingdom, FSA-authorized introducing brokerage firm. None of these companies provides trading or investment advice, recommendations or endorsements of any kind. The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer.

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Re: [Boost-users] iterators must go
by John Dlugosz 15 May '09

15 May '09

> I think a ranges can be used as insertion positions. The element could > be inserted just before or after the start of the range. The details > have to be worked out, like if it's before or after, and if it's > before, > if the range grows to include the element. I thought that Boost has ranges for some time, and the upcoming C++ standard incorporates them. So, haven't the details *been* worked out? --John TradeStation Group, Inc. is a publicly-traded holding company (NASDAQ GS: TRAD) of three operating subsidiaries, TradeStation Securities, Inc. (Member NYSE, FINRA, SIPC and NFA), TradeStation Technologies, Inc., a trading software and subscription company, and TradeStation Europe Limited, a United Kingdom, FSA-authorized introducing brokerage firm. None of these companies provides trading or investment advice, recommendations or endorsements of any kind. The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer.

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Boost.Regex 1.39.0: Crash in boost::sub_match::str()
by Peter Klotz 15 May '09

15 May '09

The program below crashes when compiled and executed in Windows using MSVC8. The crash happens in boost::sub_match::str(). It seems that the internal structure m_subs gets somehow corrupted. The crash disappears when passing the const reference fileName instead of it->path().filename(). I have no idea why this should make any difference. The program expects a directory on the command line. Just put an empty file called "AAA-0.txt" in this directory. Any help is appreciated. Regards, Peter. #include <iostream> #include <boost/filesystem/path.hpp> #include <boost/filesystem/convenience.hpp> #include <boost/regex.hpp> int main(int argc, char** argv) { try { if (argc==2) { const boost::filesystem::path p(argv[1]); const boost::regex regEx("^([A-Za-z0-9_]+)-(.*)\\.txt$"); boost::smatch match; for (boost::filesystem::directory_iterator it(p);it!=boost::filesystem::directory_iterator();++it) { const std::string& fileName=it->path().filename(); if (boost::regex_match(it->path().filename(),match,regEx)) // <- using fileName makes the crash disappear { const std::string projectName=match.str(1); // <- here it crashes } } // for return 0; } } catch (const std::exception& e) { std::cout << e.what() << std::endl; } return 1; }

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Re: [Boost-users] How to print from C++ to the same stream as Python's 'print' does?
by John Dlugosz 15 May '09

15 May '09

> Date: Wed, 13 May 2009 06:19:20 -0500 > From: Early Ehlinger <earlye(a)gmail.com> > Subject: Re: [Boost-users] (Boost.Python) How to print from C++ to the > same stream as Python's 'print' does? > To: boost-users(a)lists.boost.org > Message-ID: > <5922b0d30905130419x3d030f24s948b15cfd42d91f(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > Can you ask Python to give you the underlying OS or C standard library handle? Then you can create a C++ ofstream around that. --John TradeStation Group, Inc. is a publicly-traded holding company (NASDAQ GS: TRAD) of three operating subsidiaries, TradeStation Securities, Inc. (Member NYSE, FINRA, SIPC and NFA), TradeStation Technologies, Inc., a trading software and subscription company, and TradeStation Europe Limited, a United Kingdom, FSA-authorized introducing brokerage firm. None of these companies provides trading or investment advice, recommendations or endorsements of any kind. The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer.

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Re: [Boost-users] thread-safe ref-counted objects
by John Dlugosz 15 May '09

15 May '09

> Date: Tue, 12 May 2009 19:17:47 +0300 > From: Igor R <boost.lists(a)gmail.com> > Subject: [Boost-users] [boost-users][signals2] thread-safe > disconnection for intrusively ref-counted objects > To: boost-users(a)lists.boost.org > Message-ID: > <cfe0a3cf0905120917u55751463i566d0e96b420c011(a)mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Is there any trick or customization that would allow the subj? > I mean the following situation: > I have a set of reference-counting pointer classes that are designed specifically for cross-thread use. It *expects* to be incremented and decremented on different threads at the same time. <http://github.com/jdlugosz/repertoire> <http://www.dlugosz.com/Repertoire/refman/Classics/Smart%20Pointers%20Ov erview.html#toptop> probably doesn't tell you anything you don't already know, since it was just assumed that everything would be thread-safe and doesn't consider that an "issue". <http://www.dlugosz.com/Repertoire/refman/Classics/handle_guide.html#thr eads> goes over the thread features. Feel free to abscond with or borrow any of the code or ideas therein, if it helps you. --John (sorry about the footer; not my choice) TradeStation Group, Inc. is a publicly-traded holding company (NASDAQ GS: TRAD) of three operating subsidiaries, TradeStation Securities, Inc. (Member NYSE, FINRA, SIPC and NFA), TradeStation Technologies, Inc., a trading software and subscription company, and TradeStation Europe Limited, a United Kingdom, FSA-authorized introducing brokerage firm. None of these companies provides trading or investment advice, recommendations or endorsements of any kind. The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer.

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