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Any thoughts on transparent marshalling?
by Hurd, Matthew 28 Oct '03

28 Oct '03

I wish to do some transparent marshalling... That is, via a policy, or some such, either call a function / functor returning a void or put stuff on a message queue for transportation. This is strictly asynch stuff, hence the void result or putting the message in the ether. The message queues I have in mind are tibrv, udp, tcp, shared mem, email, internal process queue... I see the serialization w.i.p. library will be useful here. Any tips on some useful boost libs / techniques to do this? Regards, Matt Hurd hurdm(a)sig.com +61.2.8226.5029

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Newbie uBLAS question
by J. Scott Pendergrass 28 Oct '03

28 Oct '03

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RE: [Boost-users] Linker problem using boost::regex with VC6.5
by Ben Hutchings 28 Oct '03

28 Oct '03

Sven Van Echelpoel wrote: > I'm having a strange problem when I try to include boost::regex in my > project (VC6.5 on Win2K). I'm not using Build to build a separate > regex dll but rather include the source files directly in the project > (or rather in a small utility static library). I've defined > BOOST_REGEX_STATIC_LINK to avoid __declspec( dllimport ) / __declspec( > dllexport ). Are you sure that that's defined for all translation units that use or implement Boost.Regex? > Although everything compiles just fine the linker complains that it > cannot find the library boost_regex_vc6_mdsd.lib. Further > investigation revealed that it is actuallty listed somewhere as an > additional default library (the linker outputs this when you switch > on link progress messages). Searching through the sourcecode for > #pragma comment( lib, ... ) and #pragma comment( linker, ... ) > directives came up empty as did a search for boost_regex_vc6_mdsd.lib > in all sources and headers. It's in "boost/regex/v3/regex_library_include.hpp". > I got it to link by letting the linker ignore > boost_regex_vc6_mdsd.lib. > Even so I still would like to know where this is comming from. Any > ideas? I know I had some kind of problem with the above-mentioned header generated the wrong library name when I first started using Boost.Regex so I disabled the header by defining its guard macro before including "boost/regex.hpp". However, I removed that just now and didn't have any problems. Have you created your own project definition which uses a different library name? It's probably easier just to use the makefile (vc6.mak) in Visual Studio. You can do this by selecting "Insert Project into Workspace", selecting "vc6.mak" from the build directory, and thus creating a project that calls nmake on the makefile. Then you just need to edit the project settings to specify what the target names are for each configuration.

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OpenBSD
by Adam Olsen 28 Oct '03

28 Oct '03

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Has anyone had any luck compiling boost_regex on OpenBSD 3.3? If so, how did you do it? Thanks, Adam Olsen -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQE/nDKyiTy1B31kxaoRAhhBAJ98+oS83jDY3kwgauPV0HN9HG5XOgCgwlpx JI8Bhk2EyKrgBn4fX72dBSk= =Owcv -----END PGP SIGNATURE-----

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[spirit][newbie] few questions
by GIE 27 Oct '03

27 Oct '03

Hello! What is "proper way" of implementing result value of parser, have i implement new parser or can (and how?) i use grammar construct with user defined result value that can be passed to attached action (for ex. matched GUID returning)? What is performance penalty for using vectors (they need realloc, don't they) in ast trees? And is there anyway to store scanner defined result in tree, besides using user-specified value in node_val_data and type casting it to specific type depending of node id? Thanks. -- With best regards, GIE.

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RE: [Boost-users] Boost Software License: redistribute modified works?
by Ben Hutchings 27 Oct '03

27 Oct '03

Steve M. Robbins <steven.robbins(a)videotron.ca> wrote: > I've a question for the drafters of the Boost Software > License - Version 1.0 - August 17th, 2003. I am not one of them, but I can give you some answers anyway. > Put yourself in the position of someone who wants to redistribute > a modified version of Boost. For example, the linux distributors > like Debian. > > The license begins with the permission grant: > > Permission is hereby granted, free of charge, to any person or > organization obtaining a copy of the software and accompanying > documentation covered by this license (the "Software") to use, > reproduce, display, distribute, execute, and transmit the > Software, and to prepare derivative works of the Software, and to > permit third-parties to whom the Software is furnished to do so, > all subject to the following: > > [... a restriction and a disclaimer paragraph ...] > > As I read this, "the Software" means "the unmodified tar or zip > file obtained from boost.org". Is that correct? No, it means whatever software says the licence applies to it. This licence does not (yet) apply to all of Boost. All parts of it are supposed to come with a licence that meets certain requirements, listed at <http://www.boost.org/more/lib_guide.htm#License>. The licence you are reading is supposed to be a standard licence that meets these requirements. There is a fuller explanation at <http://www.boost-consulting.com/boost/more/license_info.html>. > I'm permitted to "prepare derivative works of the Software", but the > license doesn't specify what I may do with my derivative works. > > Clearly, I may distribute "the Software", but may I distribute > the derivative work? I think that may be legally implicit, but I am not a lawyer. > Some licenses (e.g. the BSD and the GPL) make it clear that the terms > apply to both the software and to derivative works. Shouldn't the > boost license do likewise? Even if it is legally implicit, I can see that it would be a good idea to clarify it. Since it doesn't specify have a choice-of-law clause it could be interpreted according to any country's contract law and things that are implicit according to US law might not be so elsewhere. Ben.

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compiling as a framework
by Avram Aelony 27 Oct '03

27 Oct '03

This may be a naive question, but on Mac Os X one can compile other libraries as a "framework", for example I can use the OpenGL library by compiling as follows: % g++ mytest.cpp -framework OpenGL Is it possible to be able to do the same style compilation for Boost? Ideally, something like this would be nice... % g++ mytest.cpp -framework Boost Incidentally, although I have installed Boost with bjam, simply compiling a Hello World style program that uses a Boost function gives me errors... An example would be great. thanks, Avram

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directory_iterator TypeLoadException
by Sergey K. 26 Oct '03

26 Oct '03

Hello, I tried to run SimpleLs program, but got a TypeLoadException at the line below. I use boost-1.30.2, MSVC++7.0 Any idea what could be causing the problem? for ( fs::directory_iterator dir_itr( full_path ); dir_itr != end_iter; ++dir_itr ) // exception thrown here Output: In directory: C:\src\cpp Unhandled Exception: System.TypeLoadException: Could not load type boost.filesystem.dir_itr_imp from assembly Filesystem Demo, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null. at boost.==(shared_ptr<boost::filesystem::directory_iterator::dir_itr_imp>* a, shared_ptr<boost::filesystem::director y_iterator::dir_itr_imp>* b) at boost.filesystem.!=(directory_iterator* x, directory_iterator* y) in c:\lib\cpp\boost-1.30.2\boost\filesystem\oper ations.hpp:line 93 at main(Int32 argc, SByte** argv) in c:\src\cpp\boost\filesystemdemo\simplels.cpp:line 44

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Interval Library on MIPS
by David A. Greene 26 Oct '03

26 Oct '03

Hi, I've been attempting to use the interval library on a MIPS/IRIX machine without luck. The problem is that there is no native rounding support and we don't have a C99 environment. I'm getting "Please specify rounding control mechanism" errors from the preprocessor. The thing is, I don't need a rounding mode. I simply want to use intervals of type int. I could understand the error if I was trying to use floating-point intervals but shouldn't I be able to specify intervals that don't require rounding? Or even specify intervals with a policy that ignores rounding? Has anyone run into this problem before? Is there a workaround? -Dave

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MS C++ 7.1 warning C4244 (spirit)
by GIE 24 Oct '03

24 Oct '03

Hello! Is there any way to avoid this warning? =========Beginning of the citation============== ------ Build started: Project: [...], Configuration: Debug Win32 ------ Compiling... [...].cpp BOOST_DIR\boost\spirit\core\primitives\impl\pri mitives.ipp(62) : warning C4244: 'initializing' : conversion from '__w64 int' to 'int', possible loss of data BOOST_DIR\boost\spirit\core\primitives\primitiv es.hpp(190) : see reference to function template instantiation 'RT boost::spirit::impl::string_parser_parse<result_t,boost::unwrap_reference<T> ::type,const ScannerT>(IteratorT,IteratorT,const ScannerT &)' being compiled with [ RT=result_t, T=const char *, ScannerT=boost::spirit::scanner<std::basic_string<char,std::char_traits<char ,std::allocator<char>>::iterator,boost::spirit::scanner_policies<boost::spi rit::no_skipper_iteration_policy<boost::spirit::scanner_policies<boost::spir it::iter_policy_t>::iteration_policy_t>,boost::spirit::scanner_policies<boos t::spirit::iter_policy_t>::match_policy_t,boost::spirit::scanner_policies<bo ost::spirit::iter_policy_t>::action_policy_t>>, IteratorT=boost::unwrap_reference<const char *>::type ] [...] Linking... Build Time 0:04 Build log was saved at "file://PROJECT_DIR\Debug\BuildLog.htm" [...] - 0 error(s), 1 warning(s) ---------------------- Done ---------------------- Build: 1 succeeded, 0 failed, 0 skipped =========The end of the citation================ -- With best regards, GIE.

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