February 2007 - Boost-users - lists.preview.boost.org

[boost::lexical_cast] problems casting hex numbers
by Ovanes Markarian 19 Feb '07

19 Feb '07

Thanks a lot for lexical_cast it is a very useful function. Currenlty I face a problem with it and I think it would be useful addon ;) Unfortunately it can not be used (or I was unable to figure out how) to cast hex or octal numbers from strings to numeric. If it is not possible, are there some concerns which disallow this? the expression: lexical_cast<size_t>("0x015e") throws a bad_lexical_cast With Kind Regards, Ovanes

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BoostCon 2007 update
by David Abrahams 19 Feb '07

19 Feb '07

A couple of quick items: 1. The conference format has changed. For many practical reasons, the "two 3-day tracks with one day of overlap on Wednesday" format proved unworkable. Among those: * Many (most) sessions don't fall neatly into the library-user/library-developer track distinction. We see this as a good thing, as it means we have more material that's of broad interest. * It made the hotel reservation pattern very difficult; we were afraid many people … [View More]

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Boost::Date_Time -New IO Tutorial
by Steve Johns 19 Feb '07

19 Feb '07

Jeff, Thanks for your answers to my earlier posts. This is a great library, and I'm enjoying learning it. :^) I notice here: http://www.crystalclearsoftware.com/libraries/date_time/release_1_33/date_t… that a tutorial on the new IO is supposed to be found here: libs/date_time/examples/tutorial This dir is not part of my Boost distro. Is there a URL I can use to access this?

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Problem in building boost 1_33_1 on solaris 5.9
by Shobha_Hubballi＠i2.com 19 Feb '07

19 Feb '07

Hi, I am trying to build boost1_33_1 on solaris 2.9 with CC 5.5 compiler. Libraries like filesystem, serialization, program_options are not built. But other libraries like thread are built perfectly. The libraries which I am not able build I am getting following same error for all libraries /data/tdm/boost_1_33_1/boost/iterator/iterator_facade.hpp", line 838: Error: Could not find a match for boost::iterator_core_access::equal<boost::iterator_core_access::Facade1, boost::… [View More]

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[Program option] Parsing string to vector<string>
by Seweryn Habdank-Wojewódzki 19 Feb '07

19 Feb '07

Dear all I have question. to the type of object stored in variables_map. In the example multiple_sources.cpp There is line: config.add_options() //... ("include-path,I", po::value< vector<string> >()->composing(), "include path") ; But independently of the case all time result vector has size = 1, so in fact above is equivalent: config.add_options() //... ("include-path,I", po::value< string >()->composing(), … [View More]

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vc8 / 2005 linker problems in program_options
by Andrew Schweitzer 19 Feb '07

19 Feb '07

I'm having problems building programs with program_options and vc8/2005. I'm getting linker errors... any suggestions? I suspect I'm doing something obvious wrong. Linking against 1.33.1, I have $(BOOST_ROOT)\bin\boost\libs in "Additional Library directories". I get "already defined" and "unresolved" errors when I try to use program_options code that builds in vc71. For example: //no problem here... #include <boost/program_options.hpp> using namespace std; using namespace boost; … [View More]

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bjam crashes
by Andrew Schweitzer 18 Feb '07

18 Feb '07

Hi there. When I run bjam 3.1.12 or 3.1.13, bjam crashes. Any ideas, suggestions? I wouldn't be surprised if I'm doing something obvious wrong. I'm trying to build on XP Pro, VC7, VC8. 1.33.1 Bjam 3.1.10 vc7 or vc8 Works! 1.33.1 Bjam 3.1.12 vc7 or vc8 kaboom 1.33.1 Bjam 3.1.13 vc7 or vc8 kaboom cvs Bjam 3.1.10 vc7 or vc8 says bjam >= v12 needed. cvs Bjam 3.1.12 vc7 or vc8 kaboom cvs Bjam 3.1.13 vc7 or vc8 kaboom Thanks Andy

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interprocess on fedora core 4
by Jan 18 Feb '07

18 Feb '07

When bjam is run on the examples folder on fedora core 4 it generates linker errors. Such as: ../../../bin/boost/libs/interprocess/example/process_a_example/gcc/release/runtime-link-static/process_a_example.o(.text+0x340): In function `main': process_a_example.cpp: undefined reference to `sem_post' NB: Does this help? [root@localhost example]# gcc -v Using built-in specs. Target: i386-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info -… [View More]

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Boost compilation error
by Gunjan 18 Feb '07

18 Feb '07

I am not able to compile Boost libraries through command line (gcc compiler on Windows). It is giving the error: fatal error C1083: Cannot open include file: 'boost/config.hpp': No such file or directory I searched on the net and found this is a common problem and should get solved by adding the path for Boost libraries to the include environment variable. But it is not happening. My observation is that its not identifying the path correctly. If I change the path manually (changing it to ‘”… [View More]

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[Program options] Some questions about composing.
by Seweryn Habdank-Wojewódzki 18 Feb '07

18 Feb '07

Hi all Is that possible to use "unsigned int" type in: config.add_options() ("source-columns,c", po::value< vector<unsigned int> >()->composing(), "List of columns. Can be: 1 2 34 5 2."); If I change "unsigned int" to "std::string" it works good. I mean I can use: -c 1 2 34 5 2 and it works. Regards. -- |\/\/| Seweryn Habdank-Wojewódzki `\/\/'

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