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

RE: [Boost-Users] Preventing Cycles with shared_ptr
by Jim.Hyslop 17 Jul '03

17 Jul '03

Jason Winnebeck wrote: > I am converting my old network library that uses explicit memory > management to use shared_ptr where appropriate. So far this has gone > well but I am having problem with cycles. [...] > One could use a weak pointer in the Generator to the > Listener, but then > the Listener may die as soon as it is registered. That's OK, though - each time the Generator wants to use the Listener, it constructs a shared_ptr out of the weak_ptr it has. If the shared_ptr is NULL, the Generator knows the Listener has gone away, and can take the appropriate steps to unregister the Listener. > ... the Listener is defined by the user. So I prefer to > make the task as easy as possible on the user -- so I want to > allow the > user to use weak or strong references if possible so he > doesn't have to > worry about cycles. If you want to make things easy for the user, don't offer them a choice. Choice means complexity. Complexity is bad. Require the user to use a shared_ptr to the Generator. -- Jim

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RE: [Boost-Users] vc6 stl's problem
by Jim.Hyslop 17 Jul '03

17 Jul '03

hlh771 wrot: > the stl's implementation of vc6 is buggy such as auto_ptr,xtree etc, > even if it is patched with sp5 The Service Packs do not include changes to the STL headers. The STL was provided by a third party, Dinkumware, which for a few years was unable to provide updates to Microsoft due to legal difficulties between Dinkumware and another party. You can find patches and fixes at Dinkumware's web site: http://www.dinkumware.com/vc_fixes.html -- Jim

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how to empty a graph?
by Jeremie 17 Jul '03

17 Jul '03

Hello guys, I'm a newbie with boost and I need to empty a Mutable graph in the program I'm doing. is ther another method as remove_edge? /Jérémie

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regex RegEx::Grep on Windows [callback problems with bind1st(mem_fun(callback))]
by Eric Brown (Propel) 16 Jul '03

16 Jul '03

I'm trying to use RegEx::Grep(GrepCallback cb, ...) on Windows with VC6. It works great with one exception. I really need the callback to be a method so that I can update attributes in my instance. I've tried about 10 ways and can't get anywhere - VC6 keeps sending back errors. Some of the errors are obvious and some - well, aren't templates wonderful whe it comes to error msgs?!@#$% I'm using MS stl and the example in the docs to get a generic function pointer doesn't work. This is the example in the regex docs: std::bind1st(std::mem_fun(&MyClass::callback), this) Then I tried: boost::bind(&MyClass::callback, this, _1) This simply produces a type that refuses to match GrepCallback. I wish the RegEx code just overloaded RegEx::Grep() to support this. (Is it more crossplatform and the STL way to do things?) I tried several other things including direct casts to GerpCallback, but I'm stuck. Any help in this area would be great. Thanks, Eric

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Standardization of build
by Johannes Strömberg 16 Jul '03

16 Jul '03

Hi, I noticed that the build of some projects (filesystem, date_time, signals) differs from the build of the thread, regex and python libraries in that they they do not include a bin-stage and that debug and release versions have the same name. It would be nice if this could be standardized somehow (especially that debug and release versions should have different names). /Johannes

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Re: [Boost-Users] Re: Is vc7 test unresolved external cpp_main still a problem?
by dick.bridges＠tais.com 16 Jul '03

16 Jul '03

I guess I must have missed those missives. I used <query>boost vc7 test "unresolved external" "cpp_main"</query> to query Google and, as I indicated, only found entrys from last February and none of them contained your nai as the sender. My query was apparently deficient in some manner. Which "FAQ section" mentions it? I tried (and just now reviewed) http://www.boost.org/more/faq.htm but didn't see anything that seemed to cover relevant changes since last February. In any case, my apologies for having not been more diligent. I guess I can assume from the referenced repetitions that the answers to my questions are: 1) no, you didn't miss an update; and 2) yes, it's still expected behavior when using the Jamfile included in the boost_1_30_0.zip currently on SourceForge. Thanks for your time and the clarification. "Gennadiy E. Rozental" To: Boost-Users(a)yahoogroups.com <rogeeff(a)mail.co cc: m> Subject: [Boost-Users] Re: Is vc7 test unresolved external cpp_main still a problem? 07/15/2003 07:33 PM Please respond to Boost-Users > libs\date_time\build\bin\boost_date_time.dll\vc7\debug\runtime- link-dynamic\boost_date_time.dll As I keep repeating DLL version of Boost.Test components is not available for NT platform at the moment. It's already fixed in Jamfile and mentioned in FAQ section. Use static linking instead. Gennadiy. Info: <http://www.boost.org> Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

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vc6 stl's problem
by hlh771 16 Jul '03

16 Jul '03

the stl's implementation of vc6 is buggy such as auto_ptr,xtree etc, even if it is patched with sp5, my question is: If I use the vc6's stl to build the boost library,is the boost library also buggy?If no, how boost library handle it? If I fix some stl's source files of vc6, will it affect boost?

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RE: [Boost-Users] Re: Using date_time::microsec_clock in windows ?
by Jim.Hyslop 16 Jul '03

16 Jul '03

Russell Hind wrote: > We discussed this a few months back. I _thought_ the discussion sounded familiar ;=) -- Jim

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bad/missing pictures in graph docs
by Ded Panas 16 Jul '03

16 Jul '03

Hello, group I'm studying the graph library now and found that some pictures in the documentation are bad, and some are missing: referenced from boost\libs\graph\doc\adjacency_list.html: adj-matrix-graph2.gif (bad) undir-adj-matrix-graph2.gif (missing) undir-adj-list2.gif (missing) referenced from boost\libs\graph\doc\adjacency_matrix.html: adj-matrix2.gif (missing) referenced from boost\libs\graph\doc\subgraph.html: subgraph.gif (bad) May be it is possible to fix it? DedPanas

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smart pointer test failed
by hlh771 16 Jul '03

16 Jul '03

hello,everybody I want to test smart pointer library,but got some compile failure: vc- C++ ..\..\..\libs\smart_ptr\test\bin\shared_ptr_alloc_test.test\msvc\d ebug\runtime-link-dynamic\shared_ptr_alloc_test.obj shared_ptr_alloc_test.cpp M:\develop\boost_1_30_0\boost/detail/quick_allocator.hpp(165) : fatal error C1001: INTERNAL COMPILER ERROR (compiler file 'msc1.cpp', line 1794) Please choose the Technical Support command on the Visual C++ Help menu, or open the Technical Support help file for more information "cl" /Zm800 -nologo -GX -c /Z7 /Od /Ob0 /GX /GR /MDd - I"..\..\..\libs\smart_ptr\test" -I"M:\develop\boost_1_30_0" - I"D:\PROGRA~1\MICROS~1\VC98\include" - Fo"..\..\..\libs\smart_ptr\test\bin\shared_ptr_alloc_test.test\msvc\de bug\runtime-link-dynamic\shared_ptr_alloc_test.obj" - Tp"shared_ptr_alloc_test.cpp" ...failed vc- C++ ..\..\..\libs\smart_ptr\test\bin\shared_ptr_alloc_test.test\msvc\d ebug\runtime-link-dynamic\shared_ptr_alloc_test.obj... ...skipped <libs!smart_ptr! test\shared_ptr_alloc_test.test\msvc\debug\runtime-link- dynamic>shared_ptr_alloc_test.CMD for lack of <libs!smart_ptr! test\shared_ptr_alloc_test.test\msvc\debug\runtime-link- dynamic>shared_ptr_alloc_test.obj... ...skipped <libs!smart_ptr! test\shared_ptr_alloc_test.test\msvc\debug\runtime-link- dynamic>shared_ptr_alloc_test.exe for lack of <libs!smart_ptr! test\shared_ptr_alloc_test.test\msvc\debug\runtime-link- dynamic>shared_ptr_alloc_test.CMD... ...skipped <libs!smart_ptr! test\shared_ptr_alloc_test.test\msvc\debug\runtime-link- dynamic>shared_ptr_alloc_test.run for lack of <libs!smart_ptr! test\shared_ptr_alloc_test.test\msvc\debug\runtime-link- dynamic>shared_ptr_alloc_test.exe... ...failed updating 1 target... ...skipped 4 targets... ...updated 1 target... my test command is:bjam -sTOOLS=msvc test my compiler is vc6+sp5 It's seems like the compiler's error,but because the test's failure, I'm not sure it will work correctly if use it in my app. Thanks in advance.

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