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Tuple.hpp: initialization data in header
by Edson Tadeu 30 Jun '05

30 Jun '05

My compiler is complaining that tuple_basic.hpp has data initialization in header, at this line: detail::swallow_assign const ignore = detail::swallow_assign(); Because of this, it can't cache the headers, and compilation times goes turtle speed. Is there a simple way to overcome this, without the need to create a .cpp and linking it or without using macros?? Thanks :)

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Re: [Boost-users] supressing "extra ;" warnings with GCC 3.4
by Sohail Somani 30 Jun '05

30 Jun '05

> -----Original Message----- > From: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Paul Johnson > Sent: Thursday, June 30, 2005 6:20 AM > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] supressing "extra ;" warnings with GCC 3.4 > > > David Abrahams wrote: > > Dave Steffen <dgsteffen(a)numerica.us> writes: > > > > > >> I claim that our macros and use thereof is A) correct and > B) safe. It > >> just so happens that these macro constructs occasionally expand to > >> something that has an extra semicolon, which triggers a warning in > >> GCC 3.4 that we haven't seen before. > > > > > > The warning will be an error on other compilers. The semicolons > > aren't just "bad style;" they're illegal. > > Uhh... why? Example? I believe extra semicolons are illegal after namespace declarations and function definitions atleast. A semicolon in a function is an empty statement which is legal. Disclaimer: I am not a language lawyer, I just play one on email.

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[Boost][lambda] Newbie Questions: member pointer operator use
by Brian Allison 30 Jun '05

30 Jun '05

Hi All, Given two vector<Rec*> S.T. : vector<Rec*> src; vector<Rec*> dst; Where 'src' has some elements that are useful, is there a more succint way to say: for_each(src.begin(), src.end(), if_then( bind<bool>(&vector<Rec*>::empty, &var(dst)), bind<void>(&vector<Rec*>::push_back, &var(dst), _1) ) ); Originally I tried using the member pointer operator, but this it gave me compile fits (Red Hat with a 2.4.20-8 kernel, GCC 3.4.3) with this: for_each(src.begin(), src.end(), if_then(bind<bool>(&vector<Rec*>::empty, &var(dst)), (&var(dst) ->* &vector<Rec*>::push_back)(_1) ) ); Is that a valid use of the member pointer operator? Thanks, Brian

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[BGL] Problem report - graphviz_read has syntax error for g++ 3.3.1
by Tan Kwee Heong 29 Jun '05

29 Jun '05

Hi, I hope this is the right forum to post this bug I found. If not, let me know and I'll repost. Thanks, ---------------------------------------------------------------------------- - platform : win2k boost version : 1_32_0 compiler : g++ 3.3.1 (cygming special) build : both debug and release ( static linking of graphviz library ) Symptoms: 1) Reading a digraph .dot file causes a syntax error to be emitted 2) The BGL example testcase has a false pass This problem occurred in my BGL code, but to reproduce the problem, it is easier to use the BGL example program example/graphviz.cpp, as annotated below. 1) This step runs the graphviz testcase in <boost>\libs\graph\example. Although I built both debug and released, I've retained only the relevant "release" output. | h:\vault\boost\boost_1_32_0\libs\graph\example>bjam -d2 --preserve-test-targ ets -sTOOLS=gcc -sBUILD="debug release <runtime-link>static" graphviz | ... | gcc-C++-action ..\..\..\bin\boost\libs\graph\example\graphviz.test\gcc\debug\runtime-link-s tatic\graphviz.obj | "g++" -c -Wall -ftemplate-depth-255 -g -O0 -fno-inline -I"..\..\..\bin \boost\libs\graph\example" -I "h:\vault\boost\boost_1_32_0" -o "..\..\..\bin\boost\libs\graph\example\graphviz.test\gcc\debug\runtime-link- static\graphviz.obj" "..\..\..\libs\graph\example\graphviz.cpp" | gcc-Link-action ..\..\..\bin\boost\libs\graph\example\graphviz.test\gcc\debug\runtime-link-s tatic\graphviz.exe | "g++" "-Wl,--enable-auto-image-base" -static -g -o "..\..\..\bin\boost\libs\graph\example\graphviz.test\gcc\debug\runtime-link- static\graphviz.exe" -L"../../../bin/boost/libs/graph/build/libbgl-viz.lib/ gcc/debug/runtime-link-static" "..\..\..\bin\boost\libs\graph\example\graphviz.test\gcc\debug\runtime-link- static\graphviz.obj" "..\..\..\bin\boost\libs\graph\build\libbgl-viz.lib\gcc\debug\runtime-link-s tatic\libbgl-viz.lib" "..\..\..\bin\boost\libs\graph\build\libbgl-viz.lib\gcc\debug\runtime-link-s tatic\libbgl-viz.lib" | | execute-test ..\..\..\bin\boost\libs\graph\example\graphviz.test\gcc\debug\runtime-link-s tatic\graphviz.run | ... 2) Note the **passed"" line. | **passed** ..\..\..\bin\boost\libs\graph\example\graphviz.test\gcc\debug\runtime-link-s tatic\graphviz.test | 3) This step shows running the testcase executable built above, manually, showing the syntax error emitted. | H:\vault\boost\boost_1_32_0\bin\boost\libs\graph\example\graphviz.test\gcc\r elease\runtime-link-static>graphviz ../../../../../../../../../libs/graph/example/graphviz_test.dot | graphviz ../../../../../../../../../libs/graph/example/graphviz_test.dot | This is an example to demonstrate how to read graphviz file | and how to write graph to graphviz format. | | | Usage: graphviz <input>.dot <output>.dot | If only have one xxx.dot in command line, | the second dot is graphviz_test_new.dot by default. | If there is no input and output dot file in command line, input is graphviz_test.dot and output graphviz_test_new.dot. | syntax error | 4) This step shows an equivalent VC7.1 build that runs correctly. | H:\vault\boost\boost_1_32_0\bin\boost\libs\graph\example\graphviz.test\vc-7_ 1\release\runtime-link-static>graphviz ../../../../../../../../../libs/graph/example/graphviz_test.dot | graphviz ../../../../../../../../../libs/graph/example/graphviz_test.dot | This is an example to demonstrate how to read graphviz file | and how to write graph to graphviz format. | | | Usage: graphviz <input>.dot <output>.dot | If only have one xxx.dot in command line, | the second dot is graphviz_test_new.dot by default. | If there is no input and output dot file in command line, input is graphviz_test.dot and output graphviz_test_new.dot. | a1 --> a2 b3 | a2 --> a3 | a3 --> end | a0 --> a1 a2 a3 | b0 --> b1 a1 a2 a3 a0 | b1 --> b2 a1 a2 a3 a0 | b2 --> b3 a1 a2 a3 a0 a3 | b3 --> a1 a2 a3 a0 end | start --> a1 a2 a3 a0 b0 | end --> |

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boost.regex doesn't implement character set complements?
by Robert Mathews 29 Jun '05

29 Jun '05

Hi: I was trying to write "Match everything *except* Bar". I wrote this: bool aResult = boost::regex_match(L"Foo", boost::wregex(L"[^(Bar)]")); This doesn't match. But if I wrote the same thing in Perl, it does work, ie: print "match\n" if( "Foo" =~ "[^(Bar)]"); It looks a lot like sets can't contain subexpressions in boost::regex ... is that really true? Is there some other way to write the same thing? Rob.

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Lambda and Borland C++
by Edson Tadeu 29 Jun '05

29 Jun '05

I've found a topic of 2 and a half years ago stating that the Lambda library was unusable in Borland C++. Now, in version 1.32.0, it continues unusable. The #inclusion of lambda.hpp itself triggers a lot of errors (nof_elems cannot be used without an object, etc...). There was a suggestion on using spirit/phoenix, but it also generates some errors in this compiler. So, my question again is: how to use Lambda functions or something equivalent in Borland C++? Thanks!

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Boost.Thread tss_cleanup_implemented question
by Simon Carter 29 Jun '05

29 Jun '05

I'm having some difficulty understanding what I need to implement in tss_cleanup_implemented when using boost.thread I'm using Windows Borland C++ Builder 6 (bcc32 v5.6.4) Roguewave stl Static (.lib) build of boost.thread In my project I #define BOOST_THREAD_USE_LIB My first problem was a pair of unresolved externals - this seems to happen occasionally with boost, bcb6 & roguewave. The missing definitions were boost::thread::thread(boost::function0<void>&) and boost::detail::tss::init(boost::function1<void, void *, std::allocator<boost::function_base> > *) I resolved these by forcing the compiler to generate the relevant code by #including the implementation definitions and creating a function which is never called so: #if (__BORLANDC__ >= 0x560) && defined(_USE_OLD_RW_STL) #include <boost/thread.hpp> #include <boost/thread/tss.hpp> #include <libs/thread/src/thread.cpp> #include <libs/thread/src/tss.cpp> void DummyFuncToGenerateTemplateSpecializations(void) { // This forces generation of // boost::thread::thread(boost::function0<void>&) boost::function0<void> A = NULL; boost::thread B(A); // This forces generation of // boost::detail::tss::init(boost::function1<void, void *, // std::allocator<boost::function_base> > *) // but has the consequence of requiring the deliberately undefined function // tss_cleanup_implemented boost::function1<void, void*>* C = NULL; boost::detail::tss D(C); } But this then causes a call to the deliberately undefined tss_cleanup_implemented so I get another unresolved external. I can't find any info on the sort of thing I need to implement in tss_cleanup_implemented. What should I be doing? Or I have gone wrong somewhere else? Thanks in anticipation Simon

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Boost string algorithms binary-safety
by Leon Mergen 29 Jun '05

29 Jun '05

Hello, I need to replace patterns in a string with contains (partially) binary data. Is it safe to use the Boost string algorithms for it ? I wasn't able to find anything about binary-safety of the string algorithms in the Boost documentation. Regards, Leon Mergen

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filesystem statistics
by Steve Hartmann 29 Jun '05

29 Jun '05

Hello all, I was browsing boost to find some portable means for getting file system statistics such as file system (disk) size, free space, etc. I kind of expected to see this in the boost filesystem library, but they don't appear to be there. Doesn't even seem to be in the "Do-list". Am I missing something? Looking in the wrong place? Thanks, Steve

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Re: [Boost-users] Application using boost library hangs
by Thameem Ansari - CTD ,Chennai 29 Jun '05

29 Jun '05

Hi Sorry guys I have bothered you much as to my mail's disclaimer which even i did not aware while i was sending my query. Thanks for your valuable response. I am using boost version 1.0 dlls/libraries. Any how my application works with the following code than the one which leads to hang the application std::vector<std::string> v; boost::RegEx expr("(?=adc)", TRUE); bool b = expr.Search("XYZ(M-ADC)"); (replaced for 'expr.Grep(v, "XYZ(M-ADC)")') the last statement returns true succesfully in this case. thanks again and regards thameem DISCLAIMER This message and any attachment(s) contained here are information that is confidential, proprietary to HCL Technologies and its customers. Contents may be privileged or otherwise protected by law. The information is solely intended for the individual or the entity it is addressed to. If you are not the intended recipient of this message, you are not authorized to read, forward, print, retain, copy or disseminate this message or any part of it. If you have received this e-mail in error, please notify the sender immediately by return e-mail and delete it from your computer

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