January 2008 - Boost-users - lists.preview.boost.org

boost.xpressive is inefficient while seaching in raw bytes
by Aries Tao 30 Jan '08

30 Jan '08

hi everybody,I use boost.xpressive to search email address in a binary file which size is 10*1024*1024 bytes. every bytes is 0x6f in that file.boost.xpressive is inefficient. anyone can help me? thanks! the code is below: //read file CFile file(_T("d:\\test.dat"),CFile::modeRead ); byte* pBuffer = new byte[file.GetLength()]; file.Read(pBuffer,file.GetLength()); std::string str((char*)pBuffer,file.GetLength()); sregex token = sregex::compile("([a-z#~_\\.!\\#$%\\^&\\*\$\$\\-]+(a)[a-z#_\\-]+\\.[a-z#_\\-\\.]+)"); sregex_iterator cur( str.begin(), str.end(), token ); sregex_iterator end; for( ; cur != end; ++cur ) { smatch const &what = *cur; std::string strResult = what[0]; int start = what[0].first - str.begin(); } _________________________________________________________________ Helping your favorite cause is as easy as instant messaging. You IM, we give. http://im.live.com/Messenger/IM/Home/?source=text_hotmail_join

4 9

Generic indexing by "const char *"
by Joseph Fradley 29 Jan '08

29 Jan '08

I have a problem that I would like to solve in the most generic non-intrusive way possible (such as boost serialization). What I want is to access class members both via it's initially designed accessors but also via a "const char *" key. In addition, I want to pass list of key's (via a vector of const char * or a single delimited multikey char *) to get nested member access. For example: ... // these should be equivalent Point p; int val; val = p.x; val = p.getX(); p.getMemberValue("x", val); // there also Rectangle r; int val; Point pVal; r.getMemberValue("corner:x", val); r.getMemberValue("corner", pVal); I thought about having a templated function similar to the serialize() function called 'getMemberValue()', where each 'if' block below could be wrapped into a MACRO taking just the member name. template< class T > bool getMemberValue(const char *key, T & value) { if(!strcmp(key, "member")) { value = this->member; return true; } return false; } This appears to work fine for one level deep but if I want the behavior such as the above rectangle example, I run into trouble. I end up with a function implementation like this for the 'Rectangle' class template< Point > bool getMemberValue(const char *key, Point & value) { if(!strcmp(key, "corner")) { value = this->corner; // Point return true; } if(!strcmp(key, "width")) { value = this->width; // int return true; } if(!strcmp(key, "height")) { value = this->height; // int return true; } return false; } This fails because it ends up trying to set an integer value to a Point variable. Anybody have any suggestions? Joe

4 6

isinf & Boost
by metty 29 Jan '08

29 Jan '08

Hi All, I have to use isinf in an application. The application was originally written using gcc (under linux) which supports isinf. I want to port it to Windows and VC++ doesn't seem to support it. I googled around and I think the "omnipotent" Boost has something to help with this. Unfortunately, I couldn't get the details of how to make use of it. I would be grateful if someone can help me? Thank you in advance! metty ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ

4 6

[flyweight] Review period extended to February 3
by Ion Gaztañaga 29 Jan '08

29 Jan '08

Hi to all, We've received 4 positive reviews and several comments, but we still want more ;-) Some people expressed interested in the pre-review period and I want to give some time (weekend is the right time to review a Boost library...) to those who are interested in the library and have not found time to review it. The last review day is February 3. Common, the library is very lightweight ;-) to review, it's pretty well documented, it's certainly small and very general purpose. Here is the information. Last call to passengers! *Description:* Flyweights are small-sized handle classes granting constant access to shared common data, thus allowing for the management of large amounts of entities within reasonable memory limits. Boost.Flyweight makes it easy to use this common programming idiom by providing the class template flyweight<T>, which acts as a drop-in replacement for const T. *Online docs:* http://tinyurl.com/2sstyr http://svn.boost.org/svn/boost/sandbox/flyweight/libs/flyweight/index.html *Download:* http://tinyurl.com/hrdm6 http://www.boost-consulting.com/vault/index.php?&direction=0&order=&directo… *Notes:* 1) We've seen some suggestions in the mailing list for Flyweight. Joaquín has nicely explained a couple of issues that we'd like to address/discuss in the review: http://tinyurl.com/33ghtf http://svn.boost.org/svn/boost/sandbox/flyweight/libs/flyweight/doc/review_… 2) Flyweight needs Boost 1.35 elements because the library depends on libraries like Interprocess for some features/tests. Since SVN snapshot tarballs seem to be missing these days, those who want to try flyweight can download a working SVN-HEAD snapshot here: http://igaztanaga.drivehq.com/boost_trunk.tar.bz2 3) Serialization tests won't work. This feature is expected to work when some new features (discussed in the mailing list between Joaquín and Robert Ramey) are added in Boost.Serialization. Those are expected for Boost 1.36. What to include in Review Comments ================================== Your comments may be brief or lengthy, but basically the Review Manager needs your evaluation of the library. If you identify problems along the way, please note if they are minor, serious, or showstoppers. Here are some questions you might want to answer in your review: * What is your evaluation of the design? * What is your evaluation of the implementation? * What is your evaluation of the documentation? * What is your evaluation of the potential usefulness of the library? * Did you try to use the library? With what compiler? Did you have any problems? * How much effort did you put into your evaluation? A glance? A quick reading? In-depth study? * Are you knowledgeable about the problem domain? And finally, every review should answer this question: * Do you think the library should be accepted as a Boost library? Be sure to say this explicitly so that your other comments don't obscure your overall opinion. Ion Gaztañaga - Review Manager -

1 0

[thread_safe_signals] multi_threaded.hpp uses same #ifdef as auto_threaded.hpp - no inclusion possible
by raimar wagner 29 Jan '08

29 Jan '08

Hi! yet another thread_safe_signals problem :-) : auto_threaded.hpp: > #ifndef BOOST_SIGNALS_MULTI_THREADED_MODEL_HEADER > #define BOOST_SIGNALS_MULTI_THREADED_MODEL_HEADER multi_threaded.hpp: > #ifndef BOOST_SIGNALS_MULTI_THREADED_MODEL_HEADER > #define BOOST_SIGNALS_MULTI_THREADED_MODEL_HEADER For using multi-thread support the documentations says: "Thus boost/signals/multi_threaded.hpp is not automatically included when you include boost/signal.hpp, and must be included separately if you wish to use multi_threaded." but this can't work because "auto_threaded.hpp" is included in "thread_safe_signal.hpp", thus every (later) include of "multi_threaded.hpp" does nothing. My workaround was just changing multi_threaded.hpp to > #ifndef BOOST_SIGNALS_MULTI_THREADED_MODEL_HEADER_MULTI > #define BOOST_SIGNALS_MULTI_THREADED_MODEL_HEADER_MULTI but this should also be changed in the downloadable archives. Kindest regards Raimar Wagner

2 1

[thread_safe_signals] Qt/MOC Linker problem with header-only thread_safe_signals-library
by raimar wagner 29 Jan '08

29 Jan '08

Hi! I'm using the "thread_safe_signals"-library in a Qt-Context. I have a file "foo.cpp" containing Qt-stuff which is processed by the moc before it compiles. foo.cpp: > #include "foo.h" > > ... Qt-stuff ... > foo.h: > #include "bar.h" > > ... Qt-declarations .. > bar.h: > #include <boost/thread_safe_signal.hpp> > #include <boost/thread_safe_signals/multi_threaded.hpp> > #include <boost/bind.hpp> > > ... > Now the following happens: 1.) The Qt moc creates moc_foo.cpp based on foo.cpp 2.) everything compiles fine ("g++ (GCC) 4.1.0 (SUSE Linux)" using SCons on SUSE 10.1) 3.) The linking process fails with: > build/release/src/foo.os: In function `boost::signalslib::null_deleter(void const*)': > /path_to_boost/include/boost/thread_safe_signals/connection.hpp:42: multiple definition of ` > boost::signalslib::null_deleter(void const*)' > build/release/src/bar.os:/path_to_boost/include/boost/thread_safe_signals/connection.hpp:42: first > defined here > build/release/src/foo_moc.os: In function `boost::signalslib::null_deleter(void const*)': > /path_to_boost/include/boost/thread_safe_signals/connection.hpp:42: multiple definition of > `boost::signalslib::null_deleter(void const*)' > build/release/src/bar.os:/path_to_boost/include/boost/thread_safe_signals/connection.hpp:42: first > defined here > collect2: ld returned 1 exit status Our workaround was to edit connection.hpp from: 42: > void null_deleter(const void*) {} to 42: > void null_deleter(const void*); and add to bar.cpp: > namespace boost > { > namespace signalslib > { > void null_deleter(const void*) {} > } > } This works, but maybe there is a better solution to cope with this problem. Any ideas? Kindest regards Raimar Wagner

2 1

Building 64-bit Boost Libraries on Windows
by Trueman, Christopher 29 Jan '08

29 Jan '08

I'm continuing to have trouble compiling 64-bit versions of the Boost libraries on Windows using VS2008. I've used a number of the tips posted online including: bjam --toolset=msvc-9.0 address-space=64 but watching the Task Manager I see that it always launches the 32-bit version of the compiler. Does someone have the correct BJAM command line to make this work? I'm using Boost 1.34.1 which I patched in a couple of places to have it recognize the 9.0 (internally version 15) VS 2008 toolset. Any help much appreciated. Thanks. Chris. _______________________________________________________ The contents of this e-mail are intended for the named addressee only. It contains information that may be confidential. Unless you are the named addressee or an authorized designee, you may not copy or use it, or disclose it to anyone else. If you received it in error please notify the sender immediately, and then destroy it.

3 2

[Filesystem] Crashes with global const path
by Hughes, James 29 Jan '08

29 Jan '08

Hello all, We have had problems with boost::path when used as a const global variable, using gcc on ARM Linux. Example code (typed in the the email so probably missing code, but this is the basic premise) #include <boost/filesystem/path.hhp> const boost::path test = "/usr/bin/whatever"; main() { //something } This crashes prior to getting to main, obviously whilst the path is being set up during initialisation. Is this a known problem? Is there a way round it? Have we misunderstood something important? Path works fine elsewhere, its only when some sort of initialisation code is called that it goes pear shaped. James This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately.

2 2

Serialization of pointers to PODs
by Joseph Fradley 29 Jan '08

29 Jan '08

Is it possible using the boost serialization libraries to serialize pointers to PODs, such as integers? I have tested successfully with pointers to classes but have not been able to get pointers to non-polymorphic serialized. Is this a known issue? Joe

2 3

[review] Fast track review of Boost.Utility/Singleton - rejected for now
by John Torjo 29 Jan '08

29 Jan '08

Hi all, We've gotten a lot of feedback on the Boost.Utility/Singleton. It's clear that such an addition would be beneficial to Boost, but I've chosen to reject the library at this time. Summary: - 4 positive reviews - 4 negative reviews Phil Endecott - yes Nat Goodspeed - yes Dherring[@]ll[]mit[]edu - yes Ingolf Steinbach - yes Anthony Williams - no Gennady - no Pierre-Jules Tremblay - no Michael Marcin - no The main concern was that the library is not flexible enough, and that it imposes too many things on the users (like, if BOOST_HAS_THREADS is defined, the singleton is automatically thread-safe). I would like to see this into Boost, so I hope Tobias will update the library, given all this feedback, and I would suggest another review in 2-3 months. I'd like to be the review manager then as well, if Tobias will still want me. Suggestions: * Should use policies to specify creation/destruction, access to singleton, resurection For creation/destruction, one should be able to have singleton<single_thread<T> >, singleton< synchronized<T> >, singleton< thread_specific<T> > * example for DLL support * more detailed docs As for the next review of the library, I will talk to Tobias, and let the review wizard know. Thanks to Tobias, for the lib, and to all that participated to the review! Best, John - Review Manager - -- http://John.Torjo.com -- C++ expert ... call me only if you want things done right

2 3

MPL: Instantiating a template across permutations of types
by cp now 29 Jan '08

29 Jan '08

Hello. I am trying to instantiate a template taking two parameters across a series of types contained in mpl::vector's, and place the resulting types in an mpl::vector. template <class A, class B> class T {}; typedef mpl::vector<int, double, char> Atypes; typedef mpl::vector<double, std::string> Btypes; template <template <class, class> class TEMPLATE, class ATYPE, class BTYPES, class CLASSES> struct unary_fold_inner : mpl::fold< BTYPES, CLASSES, mpl::push_back<mpl::_1, TEMPLATE<ATYPE, mpl::_2> > > {}; template <template <class, class> class TEMPLATE, class ATYPES, class BTYPES> struct unary_fold : mpl::fold< ATYPES, mpl::vector<>, typename detail::unary_fold_inner<TEMPLATE, mpl::_2, BTYPES, mpl::_1>::type > {}; typedef unary_fold< T, Atypes, Btypes >::type CLASSES; I expect CLASSES will be an mpl::vector containing 2x3=6 types as follows: T<int, double> T<int, std::string> T<double, double> T<double, std::string> T<char, double> T<char, std::string> in other words, instantiating template T across all permutations of Atypes and Btypes. What I see instead is puzzling. Classes is indeed an mpl::vector, and indeed contains 6 types, but the types are simply: T<double, double> T<std::string, std::string> T<double, double> T<std::string, std::string> T<double, double> T<std::string, std::string> The iteration I'm trying to accomplish is all wrong. I think it has to do with how I'm creating my metafunctions. I'm still unclear about when the ::type suffix is needed (for the last parameter to mpl::fold<> for example) and whether I need an "apply" template somewhere in my struct's. Any help appreciated. v

2 2

boost::filesystem::rename - behavior/code vs. docs
by Andriy Gapon 29 Jan '08

29 Jan '08

[repost] This is what documentation on boost::filesystem::rename states: http://www.boost.org/libs/filesystem/doc/tr2_proposal.html template <class Path1, class Path2> void rename(const Path1& from_p, const Path2& to_p); Requires: Path1::external_string_type and Path2::external_string_type are the same type. Effects: Renames from_p to to_p, as if by POSIX rename(). Postconditions: !exists(from_p) && exists(to_p), and the contents and attributes of the file originally named from_p are otherwise unchanged. [Note: If from_p and to_p resolve to the same file, no action is taken. Otherwise, if to_p resolves to an existing file, it is removed. A symbolic link is itself renamed, rather than the file it resolves to being renamed. -- end note] Actual effect is that an exception is thrown when renaming a file to an existing file on the same fs. rename(2) performs an 'atomic' rename in this case without problems, but in the boost code there is a specila check against "too permissive" posix rename(): http://boost.cvs.sourceforge.net/boost/boost/libs/filesystem/src/operations… 1126 rename_api( const std::string & from, const std::string & to) 1127 { 1128 // POSIX is too permissive so must check 1129 fs::system_error_type dummy; 1130 if ( fs::exists( status_api( to, dummy ) ) ) 1131 return EEXIST; 1132 return std::rename( from.c_str(), to.c_str() ) != 0 1133 ? errno : 0; 1134 } And rename testing code also checks for the above behavior. I think that this is a huge difference between the docs and the code, and this is very counter-intuitive too. -- Andriy Gapon

1 0

[pre-processor ] help needed
by Ovanes Markarian 29 Jan '08

29 Jan '08

Hello *, I have some pre-processor sequence in form of: (X1) (X2) (X3) (X4) which is expanded by BOOST_PP_SEQ_FOR_EACH to template parameters: some_template<X1, X2, X3, X4> ... My problem now is that some of Xn parameters can be a template instantiation and that actually causes PP to think, that there are more parameters to the function applied by ..._SEQ_FOR_EACH. Example: some_other_template<T1, T2> cause preprocessor to think that there are 2 params some_other_template<T1 and T2>. Putting the parameter into additional braces like ((X4)) results in the template: some_template<X1, X2, X3, (X4)> and that results in a compiler error. I know this construct can switch off ADL, but I don't know why it result here in a compiler error, since I fully qualify the X4 (from which namespace it is). Is there any way to treat Xn as a single paramer but during the final pre-processing stage get rid of additional braces? Many thanks, Ovanes

2 4

boost regex, stlport and icu on linux
by Michele Bini 29 Jan '08

29 Jan '08

Hello, I'm building boost 1.34.1 on linux (with redhat 9 gcc 3.2.2-5) with STLport 5.0 and ICU. This is the bjam invocation: bjam -q -j4 --toolset=gcc \ --build-dir=~/boost/build \ --stagedir=~/boost/stage --prefix=~/build-gecko \ -sNO_BZIP2=1 \ -sSTLPORT_VERSION=5 -sSTLPORT_5_PATH=~/build-gecko/lib \ -sSTLPORT_INCLUDE_DIRECTORY=../include/stlport \ -sSTLPORT_LIB_DIRECTORY=. \ -sHAVE_ICU=1 -sICU_PATH=~/build-gecko \ --without-python \ runtime-link=shared variant=release \ instruction-set=i686 threading=multi stage install This simple example: #include <iterator> #include <boost/regex.hpp> #include <iostream> int main(int argc, const char** argv) { std::string xml_str = "<?xml version=\"1.0\"?><test/>\n"; boost::regex e1("<\\?xml version=\"[^\"]+\"\\?>", boost::regex::extended); std::string sanitized_xml = boost::regex_replace( xml_str, e1, "", boost::regex_constants::match_default | boost::regex_constants::format_literal); return 0; } compiles ok with c++ -c -o ./test.o -mcpu=pentiumpro -march=pentiumpro -pipe -O2 \ -g3 -pthread -fforce-addr -fstrict-aliasing -Wall -W -Wcast-align \ -Wconversion -Wpointer-arith -Wsign-compare -Wwrite-strings \ -ftemplate-depth-48 -fno-dollars-in-identifiers -fno-operator-names \ -ffor-scope -Wctor-dtor-privacy -Wnon-virtual-dtor \ -Woverloaded-virtual -Wsign-promo -Wsynth -D__linux__ \ -D__OSVERSION__=2 -D__LITTLE_ENDIAN__ -D_REENTRANT -D_GNU_SOURCE \ -DHAVE_CONFIG_H=1 -DDEBUG -DFATAL_ASSERTS -DXP_UNIX \ -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 \ -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -DNO_GCC_PRAGMA \ -I${HOME}/build-gecko/include/stlport \ -I${HOME}/build-gecko/include \ -I${HOME}/build-gecko/include/boost-1_34_1 \ ./test.cc # Yes, I know the command line is longer than the example but fails when linking with c++ -pthread -Wl,-rpath-link,${HOME}/build-gecko/lib \ -o ./test ./test.o \ ~/build-gecko/lib/libboost_regex-gcc32-mt-1_34_1.so \ ~/build-gecko/lib/libicuuc.so \ ~/build-gecko/lib/libicui18n.so \ ~/build-gecko/lib/libicudata.so \ ~/build-gecko/lib/libstlport.so The full linker error is: test.o(.gnu.linkonce.t._ZN5boost12regex_searchIPKcN8stlp_std9allocatorINS_9sub_matchIS2_EEEEcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEEEbT_SC_RNS_13match_resultsISC_T0_EERKNS_11basic_regexIT1_T2_EENS_15regex_constants12_match_flagsESC_+0x9d): In function `bool boost::regex_search<char const*, stlp_std::allocator<boost::sub_match<char const*> >, char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >(char const*, char const*, boost::match_results<char const*, stlp_std::allocator<boost::sub_match<char const*> > >&, boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags, char const*)': /home/nas/michele/build-gecko/include/stlport/stl/_alloc.c:273: undefined reference to `boost::re_detail::perl_matcher<char const*, stlp_std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::construct_init(boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags)' test.o(.gnu.linkonce.t._ZN5boost9re_detail12perl_matcherIPKcN8stlp_std9allocatorINS_9sub_matchIS3_EEEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE11match_matchEv+0xd4): In function `boost::re_detail::perl_matcher<char const*, stlp_std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match_match()': /home/nas/michele/build-gecko/include/boost-1_34_1/boost/regex/v4/regex_iterator.hpp:48: undefined reference to `boost::match_results<char const*, stlp_std::allocator<boost::sub_match<char const*> > >::maybe_assign(boost::match_results<char const*, stlp_std::allocator<boost::sub_match<char const*> > > const&)' test.o(.gnu.linkonce.t._ZN5boost9re_detail11raise_errorINS_20regex_traits_wrapperINS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEEEEEvRKT_NS_15regex_constants10error_typeE+0x9a): In function `void boost::re_detail::raise_error<boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > >(boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::error_type)': /home/nas/michele/build-gecko/include/boost-1_34_1/boost/regex/v4/perl_matcher_common.hpp:861: undefined reference to `boost::re_detail::raise_runtime_error(stlp_std::runtime_error const&)' collect2: ld returned 1 exit status I googled a bit and found this: http://lists.boost.org/boost-users/2006/02/17394.php but there was no follow up. Is there some mistake in my example? Does somebody have any suggestions or workarounds? I know that gcc 3.2.2 is quite old but I have used it for many years and always convinced it to do its work (and no, I cannot easily switch to a newer compiler). Any help will be really appreciated; cheers, Michele

2 1

bjam help modifying a jam file
by Derrick Hathaway 28 Jan '08

28 Jan '08

Hello,I recently inquired about building Boost System which is included with the Boost Asio distribution as a universal binary. I think my question was too comlicated, so let me simplify it. What I _think_ I need to do is add my build environment information into the Boost.System Jamfile. Something like: ### libs/system/build/Jamefile # Boost System Library Build Jamfile # (C) Copyright Beman Dawes 2002, 2006 # Distributed under the Boost Software License, Version 1.0. # (See accompanying file LICENSE_1_0.txt or www.boost.org/LICENSE_1_0.txt) # See library home page at http://www.boost.org/libs/system ##### this section added # Compiler configuration using darwin : 4.0 : g++-4.0 : <cflags>"-isysroot /Developer/SDKs/MacOSX10.5.sdk -arch ppc -arch i386" <linkflags>"-Wl,-syslibroot,/Developer/SDKs/MacOSX10.5.sdk -arch ppc -arch i386" ; project boost/system : source-location ../src : usage-requirements # pass these requirement to dependents (i.e. users) <link>shared:<define>BOOST_SYSTEM_DYN_LINK=1 <link>static:<define>BOOST_SYSTEM_STATIC_LINK=1 ; SOURCES = error_code ; lib boost_system : $(SOURCES).cpp : <link>shared:<define>BOOST_SYSTEM_DYN_LINK=1 <link>static:<define>BOOST_SYSTEM_STATIC_LINK=1 ; ## end Jamfile Any Ideas? Is this the wrong place to get help on my non-universal linking problem? Thanks. -Derrick

2 1

A question about Boost.RegEx
by Chengyuan Ma 28 Jan '08

28 Jan '08

I have a text file in the following format: (sparse data format, index:value) 0.0 1:0.269474 2:0.145364 3:0.067149 4:0.112643 5:0.212212 6:0.244601 7:0.181663 8:0.238227 9:0.848362 10:0.266284 11:0.058374 12:0.071349 13:0.192308 14:0.20059 15:0.256923 16:0.385338 17:0.123268 18:0.119405 19:0.350768 20:0.187007 21:0.369464 22:0.056476 23:0.059463 24:0.07298 25:0.158566 26:0.192542 27:0.315876 28:0.503185 29:0.216059 30:0.122681 31:0.228612 32:0.116034 33:0.12488 34:0.171623 35:0.222429 36:0.278741 37:0.170732 38:0.404539 39:0.078273 40:0.201989 41:0.367349 42:0.310658 43:0.176915 44:0.215489 45:0.207045 46:0.267294 47:0.158534 48:0.114389 49:0.085446 50:0.141968 51:0.11669 52:0.804789 53:0.533344 54:0.112373 55:0.173574 56:0.495218 57:0.122419 58:0.091748 59:0.209178 60:0.100954 61:0.168572 62:0.130615 63:0.080905 64:0.552943 65:0.208904 66:0.072037 67:0.166432 68:0.539735 69:0.186302 70:0.161657 71:0.135055 72:0.131747 73:0.434487 74:0.235148 75:0.119409 76:0.137161 77:0.186354 78:0.182466 79:0.105231 80:0.049308 81:0.199764 82:0.275725 83:0.369274 84:0.222261 85:0.1464 86:0.396967 87:0.937 88:0.983 90:0.983 91:1.0 92:1.0 This one is just one line, i have 64000 lines like this one. What's the best way to load the data? I use Boost::RegEx and Boost::lexical_cast to do this. But It takes 2 minutes to read all the data. Is there a better way to do this? bool LibFile::ReadFile(const string &fileName) { ifstream fin(fileName.c_str(), ios::in) ; boost::regex elabel("^([0-9]+\\.?[0-9]+)", boost::regbase::icase); boost::regex eitem("(\\d+):([-+]?[0-9]*\\.?[0-9]+)", boost::regbase::icase); while (fin.good()) { string buffer ; getline(fin, buffer) ; if ( buffer.length() > 0) { Instance *pinstance = new Instance() ; pinstance->tag = "notag" ; pinstance->vector = new double[featureDim] ; for ( int ii = 0 ; ii < featureDim; ii ++ ) { pinstance->vector[ii] = 0.0 ; } boost::smatch what; string::const_iterator itb = buffer.begin() ; string::const_iterator ite = buffer.end() ; double label = 0.0 ; if ( boost::regex_search( itb, ite, what, elabel) ) { label = boost::lexical_cast<double>(what[1].str()) ; itb = what[0].second ; } while ( boost::regex_search( itb, ite, what, eitem) ) { int index = boost::lexical_cast<int>(what[1].str()) ; double val = boost::lexical_cast<double>(what[2].str()) ; if ( index <= featureDim) { pinstance->vector[index - 1] = val ; } itb = what[0].second ; } vecInstance.push_back(pinstance) ; instanceNum ++ ; } } fin.close() ; return true ; }

2 1

[interprocess] nptl compatibility
by Szilard Pataki 28 Jan '08

28 Jan '08

Hello Ion, I would like to use the interprocess library and some NPTL features (pthread_setaffinity_np => assign a thread to a cpu) at the same time. The pthread_setaffinity_np function is declared in /usr/include/nptl/pthread.h (on my developer platform), but throughout the interprocess/boost headers I can find #include <pthread.h> ... which makes me think that /usr/include/pthread.h is included. Can I simply swap in the interprocess .hpp files the include statements to this: #include <nptl/pthread.h> ... or do you know of a cleaner solution? I'm asking you this, because I'm using a trimmed down boost library (interprocess + bare minimum from the rest of boost) and only in the interprocess headers do I see pthread.h inclusion. Furthermore, I will have to link against /lib64/tls/libpthread-2.3.4.so... do you foresee a problem with that? Many thanks, Szilard

2 1

Boost.Test
by Hernán Leoni 28 Jan '08

28 Jan '08

Hi, I'm beginning to use Boost.Test, I decided to create a test suite (with BOOST_AUTO_TEST_SUITE) for each module to test, and various test cases (with BOOST_AUTO_TEST_CASE) in each suite. I was wondering is it exist any macro to define functions to be executed at: - test suit initialization: execute a function before any test in the test suite - test suit finalization: execute a function after any test in the test suite - test setup: execute a function before each test - test tear down: execute a function after each test Is there an easy way to do what I need? Many thanks, Hernan

2 1

[boost-users] [ptr_container and output iterator]
by chun ping wang 28 Jan '08

28 Jan '08

Hi, is their going to be an overload for ptr_container to be able to work well with back_insert_iterator, front_insert_iterator and insert_iterator. Like i can copy from ptrVectorA to ptrVectorB without worrying about the range of ptrVectorB.

2 10

linking errors with VC8
by jhfjgfhjgf＠Safe-mail.net 28 Jan '08

28 Jan '08

Hello, I am using the current boost (1.35) from the SVN, built with Visual Studio 2008 in 32 bit mode. The debug build of my project works fine, but unfortunately there is a linker error when building my application with the release configuration. 1>LINK : fatal error LNK1104: cannot open file 'libboost_iostreams-vc90-mt-s-1_35.lib' The boost library path is correct - and there is definitely no 'libboost_iostreams-vc90-mt-s-1_35.lib'. I build use using bjam: bjam --toolset=msvc-9.0 -j4 -sZLIB_INCLUDE=..\..\..\..\zlib-1.2.3 -sZLIB_SOURCE=..\..\..\..\zlib-1.2.3 link=static,shared debug release install bjam --toolset=msvc-9.0 -j4 -sZLIB_INCLUDE=..\..\..\..\zlib-1.2.3 -sZLIB_SOURCE=..\..\..\..\zlib-1.2.3 link=static,shared debug release clean What's wrong? Thank you -Daniel

2 1

[build] Creating MSVC .pdb files for static libraries
by Gary Kratkin 28 Jan '08

28 Jan '08

Hello, I'm building boost and would like to generate .pdb files for static library targets. How do I determine which dll or lib outer target is current from within an actions compile block? With that I could generate a pdb file name for /Fd. I'm working with VS2008 and boost 1_34_1 or 1_35 release branch. All help is greatly appreciated. Gary Kratkin

1 0

Install bug/workaround for 1.34.1 on cygwin.
by Greg Roach 27 Jan '08

27 Jan '08

I am trying to install boost 1.34.1 on a cygwin (x86, WinXP, NTFS) system. "make install" gives the following error: /boost_1_34_1/tools/build/v2/tools/stage.jam:424: in object(installed-shared-lib-generator)(a)4.run *** argument error * rule virtual-target.register ( target ) * called with: ( object(file-target)@1395 object(file-target)@1396 ) * extra argument object(file-target)@1396 /boost_1_34_1/tools/build/v2/build/virtual-target.jam:880:see definition of rule 'register' being called I've looked at line 424 of stage.jam. It is in the "else" block of an "if OS==NT" structure. I guess that it is wrongly detecting a linux OS - my OS is Windows. I don't know how to correct the code (I'm not familiar with this language), but by commenting out selected lines, I can force it to enter the NT block, and it all appears to work fine. HTH Greg -- Greg Roach, Stony Stratford, Bucks, England, greg(a)subaqua.co.uk "Don't eat animals - it's not good for them and they don't like it"

2 1

Re: [Boost-users] libXXX
by Kevlar 27 Jan '08

27 Jan '08

I'm also having the same problem after installing from the BoostPro Installer with VC9. Just going off the basic example, my program is: #include "stdafx.h" #include <boost/regex.hpp> #include <iostream> #include <string> using namespace std; #ifdef WIN32 int _tmain(int argc, _TCHAR* argv[]) #else int main() #endif { std::string line; boost::regex pat( "^Subject: (Re: |Aw: )*(.*)" ); while (std::cin) { std::getline(std::cin, line); boost::smatch matches; if (boost::regex_match(line, matches, pat)) std::cout << matches[2] << std::endl; } } And I'm getting: Linking... libboost_regex-vc80-mt-gd-1_34_1.lib(instances.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __thiscall std::_Container_base::_Orphan_all(void)const " (__imp_?_Orphan_all@_Container_base@std@@QBEXXZ) referenced in function "public: class std::vector<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > > & __thiscall std::vector<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > >::operator=(class std::vector<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > > const &)" (??4?$vector@U?$sub_match@PBD@boost@@V?$allocator@U?$sub_match@PBD@boost@@@std@@@std@@QAEAAV01@ABV01@@Z) libboost_regex-vc80-mt-gd-1_34_1.lib(instances.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall std::_Container_base::~_Container_base(void)" (__imp_??1_Container_base@std@@QAE@XZ) referenced in function "public: __thiscall std::_Vector_val<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > >::~_Vector_val<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > >(void)" (??1?$_Vector_val@U?$sub_match@PBD@boost@@V?$allocator@U?$sub_match@PBD@boost@@@std@@@std@@QAE@XZ) libboost_regex-vc80-mt-gd-1_34_1.lib(instances.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall std::_Container_base::_Container_base(void)" (__imp_??0_Container_base@std@@QAE@XZ) referenced in function "protected: __thiscall std::_Vector_val<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > >::_Vector_val<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > >(class std::allocator<struct boost::sub_match<char const *> >)" (??0?$_Vector_val@U?$sub_match@PBD@boost@@V?$allocator@U?$sub_match@PBD@boost@@@std@@@std@@IAE@V?$allocator@U?$sub_match@PBD@boost@@@1@@Z) libboost_regex-vc80-mt-gd-1_34_1.lib(instances.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __thiscall std::_Container_base::_Swap_all(class std::_Container_base &)const " (__imp_?_Swap_all@_Container_base@std@@QBEXAAV12@@Z) referenced in function "public: void __thiscall std::vector<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > >::swap(class std::vector<struct boost::sub_match<char const *>,class std::allocator<struct boost::sub_match<char const *> > > &)" (?swap@?$vector@U?$sub_match@PBD@boost@@V?$allocator@U?$sub_match@PBD@boost@@@std@@@std@@QAEXAAV12@@Z) libboost_regex-vc80-mt-gd-1_34_1.lib(instances.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: class std::_String_iterator<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::insert(class std::_String_iterator<char,struct std::char_traits<char>,class std::allocator<char> >,char)" (__imp_?insert@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE?AV?$_String_iterator@DU?$char_traits@D@std@@V?$allocator@D@2@@2@V32@D@Z) referenced in function "public: struct boost::re_detail::re_syntax_base * __thiscall boost::re_detail::basic_regex_creator<char,struct boost::regex_traits<char,class boost::w32_regex_traits<char> > >::append_set(class boost::re_detail::basic_char_set<char,struct boost::regex_traits<char,class boost::w32_regex_traits<char> > > const &,struct boost::mpl::bool_<0> *)" (?append_set@?$basic_regex_creator@DU?$regex_traits@DV?$w32_regex_traits@D@boost@@@boost@@@re_detail@boost@@QAEPAUre_syntax_base@23@ABV?$basic_char_set@DU?$regex_traits@DV?$w32_regex_traits@D@boost@@@boost@@@23@PAU?$bool_@$0A@@mpl@3@@Z) C:\Documents and Settings\corwin\My Documents\Visual Studio 2008\Projects\Bella\Debug\Bella.exe : fatal error LNK1120: 5 unresolved externals David Randolph Palmer wrote: > > I was able to build everything, but now get link errors, anyone know the > answer? > > Dave > > Build Log Rebuild started: Project: example, Configuration: > Debug|Win32 > Command Lines Creating temporary file "c:\Users\dad\Documents\Visual > Studio 2008\Projects\example\example\Debug\RSP00001227165100.rsp" with > contents > [ > /Od /I "C:\Program Files\boost\boost_1_34_1" /D "WIN32" /D "_DEBUG" /D > "_UNICODE" /D "UNICODE" /FD /EHa /MDd /Fo"Debug\\" /Fd"Debug\vc90.pdb" /W3 > /c /Zi /clr /TP /FU > "c:\Windows\Microsoft.NET\Framework\v2.0.50727\System.dll" /FU > "c:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Data.dll" /FU > "c:\Windows\Microsoft.NET\Framework\v2.0.50727\System.XML.dll" > > ".\example.cpp" > > ".\AssemblyInfo.cpp" > ] > Creating command line "cl.exe @"c:\Users\dad\Documents\Visual Studio > 2008\Projects\example\example\Debug\RSP00001227165100.rsp" /nologo > /errorReport:prompt" > Creating temporary file "c:\Users\dad\Documents\Visual Studio > 2008\Projects\example\example\Debug\RSP00001327165100.rsp" with contents > [ > /Od /I "C:\Program Files\boost\boost_1_34_1" /D "WIN32" /D "_DEBUG" /D > "_UNICODE" /D "UNICODE" /FD /EHa /MDd /Yc"stdafx.h" /Fp"Debug\example.pch" > /Fo"Debug\\" /Fd"Debug\vc90.pdb" /W3 /c /Zi /clr /TP /FU > "c:\Windows\Microsoft.NET\Framework\v2.0.50727\System.dll" /FU > "c:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Data.dll" /FU > "c:\Windows\Microsoft.NET\Framework\v2.0.50727\System.XML.dll" > > ".\stdafx.cpp" > ] > Creating command line "cl.exe @"c:\Users\dad\Documents\Visual Studio > 2008\Projects\example\example\Debug\RSP00001327165100.rsp" /nologo > /errorReport:prompt" > Creating command line "rc.exe /d "_UNICODE" /d "UNICODE" > /fo"Debug/app.res" ".\app.rc"" > Creating temporary file "c:\Users\dad\Documents\Visual Studio > 2008\Projects\example\example\Debug\RSP00001427165100.rsp" with contents > [ > /OUT:"C:\Users\dad\Documents\Visual Studio > 2008\Projects\example\Debug\example.exe" /INCREMENTAL /LIBPATH:"C:\Program > Files\boost\boost_1_34_1\lib" /LIBPATH:"C:\Program > Files\boost\boost_1_34_1\lib\\" /MANIFEST > /MANIFESTFILE:"Debug\example.exe.intermediate.manifest" > /MANIFESTUAC:"level='asInvoker' uiAccess='false'" /DEBUG /ASSEMBLYDEBUG > /PDB:"C:\Users\dad\Documents\Visual Studio > 2008\Projects\example\Debug\example.pdb" /DYNAMICBASE /FIXED:No /NXCOMPAT > /MACHINE:X86 ".\Debug\AssemblyInfo.obj" > > ".\Debug\example.obj" > > ".\Debug\stdafx.obj" > > ".\Debug\app.res" > ] > Creating command line "link.exe @"c:\Users\dad\Documents\Visual Studio > 2008\Projects\example\example\Debug\RSP00001427165100.rsp" /NOLOGO > /ERRORREPORT:PROMPT" > Output Window Compiling... > stdafx.cpp > Compiling... > example.cpp > Unknown compiler version - please run the configure tests and report the > results > AssemblyInfo.cpp > Generating Code... > Compiling resources... > Microsoft (R) Windows (R) Resource Compiler Version 6.0.5724.0 > Copyright (C) Microsoft Corporation. All rights reserved. > Linking... > libboost_regex-vc80-mt-gd-1_34_1.lib(usinstances.obj) : error LNK2019: > unresolved external symbol "__declspec(dllimport) public: void __thiscall > std::_Container_base::_Orphan_all(void)const " > (__imp_?_Orphan_all@_Container_base@std@@QBEXXZ) referenced in function > "public: class std::vector,class std::allocator > > & __thiscall > std::vector,class std::allocator > >::operator=(class std::vector,class > std::allocator > > const &)" > (??4?$vector@U?$sub_match@PBG@boost@@V?$allocator@U?$sub_match@PBG@boost@@@std@@@std@@QAEAAV01@ABV01@@Z) > libboost_regex-vc80-mt-gd-1_34_1.lib(instances.obj) : error LNK2001: > unresolved external symbol "__declspec(dllimport) public: void __thiscall > std::_Container_base::_Orphan_all(void)const " > (__imp_?_Orphan_all@_Container_base@std@@QBEXXZ) > libboost_regex-vc80-mt-gd-1_34_1.lib(usinstances.obj) : error LNK2019: > unresolved external symbol "__declspec(dllimport) public: __thiscall > std::_Container_base::~_Container_base(void)" > (__imp_??1_Container_base@std@@QAE@XZ) referenced in function "public: > __thiscall std::_Vector_val,class std::allocator > >::~_Vector_val,class > std::allocator > >(void)" > (??1?$_Vector_val@U?$sub_match@PBG@boost@@V?$allocator@U?$sub_match@PBG@boost@@@std@@@std@@QAE@XZ) > libboost_regex-vc80-mt-gd-1_34_1.lib(instances.obj) : error LNK2001: > unresolved external symbol "__declspec(dllimport) public: __thiscall > std::_Container_base::~_Container_base(void)" > (__imp_??1_Container_base@std@@QAE@XZ) > libboost_regex-vc80-mt-gd-1_34_1.lib(usinstances.obj) : error LNK2019: > unresolved external symbol "__declspec(dllimport) public: __thiscall > std::_Container_base::_Container_base(void)" > (__imp_??0_Container_base@std@@QAE@XZ) referenced in function "protected: > __thiscall std::_Vector_val,class std::allocator > >::_Vector_val,class > std::allocator > >(class std::allocator >)" > (??0?$_Vector_val@U?$sub_match@PBG@boost@@V?$allocator@U?$sub_match@PBG@boost@@@std@@@std@@IAE@V?$allocator@U?$sub_match@PBG@boost@@@1@@Z) > libboost_regex-vc80-mt-gd-1_34_1.lib(instances.obj) : error LNK2001: > unresolved external symbol "__declspec(dllimport) public: __thiscall > std::_Container_base::_Container_base(void)" > (__imp_??0_Container_base@std@@QAE@XZ) > libboost_regex-vc80-mt-gd-1_34_1.lib(usinstances.obj) : error LNK2019: > unresolved external symbol "__declspec(dllimport) public: void __thiscall > std::_Container_base::_Swap_all(class std::_Container_base &)const " > (__imp_?_Swap_all@_Container_base@std@@QBEXAAV12@@Z) referenced in > function "public: void __thiscall std::vector,class std::allocator > > >::swap(class std::vector,class std::allocator > > &)" > (?swap@?$vector@U?$sub_match@PBG@boost@@V?$allocator@U?$sub_match@PBG@boost@@@std@@@std@@QAEXAAV12@@Z) > libboost_regex-vc80-mt-gd-1_34_1.lib(instances.obj) : error LNK2001: > unresolved external symbol "__declspec(dllimport) public: void __thiscall > std::_Container_base::_Swap_all(class std::_Container_base &)const " > (__imp_?_Swap_all@_Container_base@std@@QBEXAAV12@@Z) > libboost_regex-vc80-mt-gd-1_34_1.lib(usinstances.obj) : error LNK2019: > unresolved external symbol "__declspec(dllimport) public: class > std::_String_iterator,class std::allocator > __thiscall > std::basic_string,class std::allocator >::insert(class > std::_String_iterator,class std::allocator >,unsigned short)" > (__imp_?insert@?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QAE?AV?$_String_iterator@GU?$char_traits@G@std@@V?$allocator@G@2@@2@V32@G@Z) > referenced in function "public: struct boost::re_detail::re_syntax_base * > __thiscall boost::re_detail::basic_regex_creator > >::append_set(class > boost::re_detail::basic_char_set > > const &,struct boost::mpl::bool_<0> > *)" > (?append_set@?$basic_regex_creator@GU?$regex_traits@GV?$w32_regex_traits@G@boost@@@boost@@@re_detail@boost@@QAEPAUre_syntax_base@23@ABV?$basic_char_set@GU?$regex_traits@GV?$w32_regex_traits@G@boost@@@boost@@@23@PAU?$bool_@$0A@@mpl@3@@Z) > libboost_regex-vc80-mt-gd-1_34_1.lib(instances.obj) : error LNK2019: > unresolved external symbol "__declspec(dllimport) public: class > std::_String_iterator,class std::allocator > __thiscall > std::basic_string,class std::allocator >::insert(class > std::_String_iterator,class std::allocator >,char)" > (__imp_?insert@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE?AV?$_String_iterator@DU?$char_traits@D@std@@V?$allocator@D@2@@2@V32@D@Z) > referenced in function "public: struct boost::re_detail::re_syntax_base * > __thiscall boost::re_detail::basic_regex_creator > >::append_set(class > boost::re_detail::basic_char_set > > const &,struct boost::mpl::bool_<0> > *)" > (?append_set@?$basic_regex_creator@DU?$regex_traits@DV?$w32_regex_traits@D@boost@@@boost@@@re_detail@boost@@QAEPAUre_syntax_base@23@ABV?$basic_char_set@DU?$regex_traits@DV?$w32_regex_traits@D@boost@@@boost@@@23@PAU?$bool_@$0A@@mpl@3@@Z) > C:\Users\dad\Documents\Visual Studio > 2008\Projects\example\Debug\example.exe : fatal error LNK1120: 6 > unresolved externals > Results Build log was saved at "file://c:\Users\dad\Documents\Visual > Studio 2008\Projects\example\example\Debug\BuildLog.htm" > example - 11 error(s), 0 warning(s) > > > > > David Randolph Palmer wrote: >> >> Same issues, I can nspeak to it over the weekend if you would like. >> >>> I am having a problems with the boost libs I have build the names does >>> not >>> start with lib >>> >>> When I build boost using bjam "-sTOOLS=vc9" install >>> I got a bunch of .lib files in c:\boost\lib e.g. >>> boost_thread-vc90-mt-1_35.lib >>> but when I build my library against tghis if fails to link since it >>> needs >>> a file libboost_thread-vc90-mt-1_35.lib >>> >>> What am I doing wrong? >>> >>> I am using boost from subversion, Windows Vista and Visual Studio 2008 >>> >>> Thanks in advance >>> Lars >>> >>> >>> >>> >>> >>> ____________________________________________________________________________________ >>> Be a better friend, newshound, and >>> know-it-all with Yahoo! Mobile. Try it now. >>> http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ >>> _______________________________________________ >>> Boost-users mailing list >>> Boost-users(a)lists.boost.org >>> http://lists.boost.org/mailman/listinfo.cgi/boost-users >> >> >> _______________________________________________ >> Boost-users mailing list >> Boost-users(a)lists.boost.org >> http://lists.boost.org/mailman/listinfo.cgi/boost-users >> >> > > -- View this message in context: http://www.nabble.com/libXXX-tp14734770p15111198.html Sent from the Boost - Users mailing list archive at Nabble.com.

2 2

Building ASIO as a universal binary in Leopard
by Derrick Hathaway 27 Jan '08

27 Jan '08

I'm running OS X Leopard on an intel Macbook. I was able to muddle through getting 1.34.1 built universal. In order to build Boost universal, I followed the instructions I stumbled upon here: http://woldlab.caltech.edu/cgi-bin/mussa/wiki/OSXUniversalDependencies I modified it slightly to build with the OS 10.5 sdk. I have appended my user-config.jam file. I am interested in using ASIO, which depends upon Boost.System. Boost.System is not included in 1.34.1, but it is included in the ASIO download. I can build and have built system according to the instructions in the ASIO README, but these instructions result in an i386 only build. Any ideas how I can build and install Boost.System universal with 1.34.1? Or, is there a better way altogether? Thanks in advance. Derrick ##### user-config.jam # Boost.Build Configuration # Automatically generated by Boost configure # Compiler configuration using darwin : 4.0 : g++-4.0 : <cflags>"-isysroot /Developer/SDKs/MacOSX10.5.sdk -arch ppc -arch i386" <linkflags>"-Wl,-syslibroot,/Developer/SDKs/MacOSX10.5.sdk -arch ppc -arch i386" ; # Python configuration using python : 2.4 : /Library/Frameworks/Python.framework/Versions/2.4 ; ##### end user-config.jam

1 0

[boost-users] [general]
by chun ping wang 26 Jan '08

26 Jan '08

Hi is their anyway for boost to allow only explicit conversion... like class MyInt { // some code inside.... operator int() {} }; myIntCalc(int, int); MyInt a, b; f = myInt(a, b); // compile error no implicit conversion. int x = boost::numeric_cast<int>(a); // k allow int y = static_cast<int>(b); // k allow.

3 3