- Boost-users - lists.boost.org

[bgl-python] write graphviz with position property
by David E. Konerding 19 Apr '06

19 Apr '06

Hi, From what I can tell it's not possible to correctly wirte a graphviz file that has a position property (where position is a tuple of xy) using bgl-python. The problem, as I see it, is that the wrapper for write_graphviz in bgl-python writes all the dynamic properties to the graph, but provides no ability to provide custom writer methods for those properties. So the resulting graphviz file prints references to the vertex position *object*, but not its values. Does anybody have a better suggestion? The only think I can see is to update the bgl-python wrappers to take function arguments for custom property writers Dave

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program_options question
by Santosh Joseph 19 Apr '06

19 Apr '06

If I have an option that looks like this: options_description desc("options"); desc.add_options()("server,s",value<string>(&server),""); I know this can parse the following options: --server arg -s arg but how can I also parse the following automatically: -server arg /server arg Is there a style flag to set? I looked at the documentation but I'm a little confused by all the style_t flags. or do I have to write a "additional parser"? thanks, -Santosh btw: i'm using 1.33.1 __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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is there any lib used to parse XML file in boost?
by lanser 19 Apr '06

19 Apr '06

hello, i need a simple xml prasing library, i consider there should be some in boost lib but i can't find it or document for this, help!

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Re: [Boost-users] [boost] [statechart] - BOOST_ASSERTION in state_machine::send_eventif used by multiple threads
by Oliver.Kowalke＠infineon.com 19 Apr '06

19 Apr '06

Same happens if I install a exception_translator in the enclosing state: /opt/boost/include/boost-1_33_1/boost/statechart/state_machine.hpp:833: void boost::statechart::state_machine<MostDerived, InitialState, Allocator, ExceptionTranslator>::send_event(const boost::statechart::event_base&) [with MostDerived = iris::proto::svc::sm<ogx::net::ipv4::stream>, InitialState = iris::proto::svc::proto<ogx::net::ipv4::stream>, Allocator = std::allocator<void>, ExceptionTranslator = boost::statechart::exception_translator<boost::statechart::exception_thr own>]: Assertion `get_pointer( pOutermostUnstableState_ ) == 0' failed. >Hello, >I've several threads running. Each thread has its own state_machine. >Sometime (not reproducible) I get following assertion: > >/opt/boost/include/boost-1_33_1/boost/statechart/state_machine.hpp:833: >void boost::statechart::state_machine<MostDerived, InitialState, >Allocator, ExceptionTranslator>::send_event(const >boost::statechart::event_base&) [with MostDerived = >iris::proto::svc::sm<ogx::net::ipv4::stream>, InitialState = >iris::proto::svc::proto<ogx::net::ipv4::stream>, Allocator = >std::allocator<void>, ExceptionTranslator = >boost::statechart::null_exception_translator]: Assertion `get_pointer( >pOutermostUnstableState_ ) == 0' failed.

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[statechart] - BOOST_ASSERTION in state_machine::send_event if used by multiple threads
by Oliver.Kowalke＠infineon.com 19 Apr '06

19 Apr '06

Hello, I've several threads running. Each thread has its own state_machine. Sometime (not reproducible) I get following assertion: /opt/boost/include/boost-1_33_1/boost/statechart/state_machine.hpp:833: void boost::statechart::state_machine<MostDerived, InitialState, Allocator, ExceptionTranslator>::send_event(const boost::statechart::event_base&) [with MostDerived = iris::proto::svc::sm<ogx::net::ipv4::stream>, InitialState = iris::proto::svc::proto<ogx::net::ipv4::stream>, Allocator = std::allocator<void>, ExceptionTranslator = boost::statechart::null_exception_translator]: Assertion `get_pointer( pOutermostUnstableState_ ) == 0' failed. What does get_pointer( pOutermostUnstableState_ ) != 0' indicate? Regards, Oliver

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Re: [Boost-users] Boost website failed?
by James Hughes 19 Apr '06

19 Apr '06

Thanks - forgot about that copy. Doh! James > -----Original Message----- > From: Jeff Flinn [mailto:TriumphSprint2000@hotmail.com] > Sent: 18 April 2006 15:52 > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] Boost website failed? > > > James Hughes wrote: > > I'm trying to look at the Boost documentation - but the website > > appears to be dead, so I cannot use the bit I want as I have no idea > > how! > > I see the same here. > > > Is it possible to download a PDF of all the Boost docs for when this > > situation arises so I can keep working? > > You should have a full copy of the docs with your boost > installation. Just > open the index.html file from the directory that you > downloaded/unzipped for > boost. > > Jeff > > > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users >

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Re: [Boost-users] is there any lib used to parse XML file in boost?
by james.jones＠firstinvestors.com 19 Apr '06

19 Apr '06

>From: Tomas Puverle <Tomas.Puverle(a)morganstanley.com> >> ... or you can use libxml (http://xmlsoft.org) which is also >> portable. I used it on Windows and Linux. It is a C library. >There are further advantages to using libxml. >The programming model of expat is based on the SAX2 interface. Libxml has >both the SAX2 and a pull-parser interface, which is generally easier to use >from an application point of view. Libxml2 is generaly faster than expat. It >also has better support for all the different XML features such as entities >etc. I also believe it's more actively maintained and developed. I may just be showing my ignorance here, but how do people feel about Xerces? Especially given that it's written in C++. (Note: I'm trying to install Xerces now on Solaris, and it isn't easy.) Ob the original question: Why not just use Boost serialization? - James Jones Administrative Data Mgmt. (v)732-510-1806 375 Raritan Center Pkwy, Suite A (f)732-510-1855 Edison, NJ 08837 Visit us on the web at http://www.firstinvestors.com/

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boost::numeric::ublas : matrix comparsion.
by chun ping wang 19 Apr '06

19 Apr '06

I went through the matrix_expression library and realize there is no way of comparing matrix...like say i want to compare ith row together, how would i do that.. (considering i want to write a generic implementation) of matrix comparison Are there any out there?

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[Boost Threads] Setting thread stack size...
by Matt Amato 19 Apr '06

19 Apr '06

I have a Windows application that has some very data intensive threads that require much more than the default 2 MB allocated to them. There doesn't seem to be a way to do this via boost threads (which I already make use of throughtout my app). Is there any way to do this with the current release, or will I have to use beginthreadex directly for these threads. Thanks, Matt

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[serialization] Build error: 1.33.1, vc-8_0 toolset, Windows XP
by Rush Manbert 18 Apr '06

18 Apr '06

Hi, I am having problems building Boost 1.33.1 under Windows XP for the vc-8_0 toolset. My problems seem to come from a bug in the build of the serialization library. The attached zip file contains information from 2 builds. One of them succeeds and the other fails. The difference between them is that the failed build includes "--layout=system" on the bjam command line, while the successful build does not. In both cases, the build is run by a script that makes sure the build location and the installation location are cleaned up before the build starts. In the zip file are the following files: * failedBoostBuild.log contains all of the output generated by bjam for the failed build. * failedConsoleTranscript.txt is the console output from the build script. It shows the bjam command line for the failed build. * failedInstalledLibList.txt is a "dir" listing of the library installation directory, after the failed build completed. * goodBoostBuild.log, goodConsoleTranscript.txt, and goodInstalledLibList.txt are the equivalents to the above for the successful build. I believe that there is an error shown in failedBoostBuild.log at line 3000. The line says: "LINK : fatal error LNK1104: cannot open file 'boost_serialization-vc80-mt-gd-1_33_1.lib'" and I believe that the error is that the library file name includes the toolset name and the Boost version number. Since I specified --layout=system, neither of these are included in the generated library names. There is a similar error at line 3058. If you compare the failedInstalledLibList.txt and goodInstalledLibList.txt, you can see that none of the boost_wserialization libraries are present in the failed case. I am guessing that they represent the four failed targets reported by bjam at the end of the build. I want to use the --layout=system naming conventions and do internal releases of the Boost libraries to our development environment. I have already done this successfully under Mac OSX, and I expected it to work the same way under Windows. If my conclusion that there is a build bug is correct, is there some workaround possible to make the build succeed? (I looked at the serialization jamfile and came away unenlightened. :-) Is there some other explanation? Thanks, Rush

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