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

why is there no ChangeLog ? (and tools to create/update one)
by Vincent Torri 07 Aug '07

07 Aug '07

Hey, As a user, I often wanted to see what is fixed in a library. As there is no ChangeLog (afaics), I have to look at the commits in cvs web (in svn, now), which is not very simple to use. So I wanted to know why there were no ChangeLog. I know some other big projects, and they use tools to create and commit automatically a ChangeLog. Here are 2 of them: http://www.buzztard.org/index.php/Coding_Guidelines#CVS_commit_message_form… (for cvs, but i think it can be modified for svn) and https://thomas.apestaart.org/moap/trac regards Vincent Torri PS: i've not subscribed to the boost dev ML. Maybe someone can forward that mail to that list.

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boost array problems.
by chun ping wang 07 Aug '07

07 Aug '07

Hi I have a struct People { const char* fname_; const char* lname_; unsigned int id; } I want to create an array of 3 people. boost::array<People, 3> = { {"Chun", "Wang", 1441}, {"Chia", "Wang", 1443}, {"Ta", "Wang", 1445} }; I get a compile time error too many initializer.

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Re: [Boost-users] [Subversion] Repository back online; please re-checkout
by David Abrahams 06 Aug '07

06 Aug '07

on Mon Aug 06 2007, "Aleksey Gurtovoy" <agurtovoy-AT-meta-comm.com> wrote: > Douglas Gregor wrote: >> We still need help updating regression.py to work with Subversion! > > Done now: http://article.gmane.org/gmane.comp.lib.boost.testing/4578. Thank you! -- Dave Abrahams Boost Consulting http://www.boost-consulting.com The Astoria Seminar ==> http://www.astoriaseminar.com

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QR approximation linear exponantial estimation line fitting
by Alper Emrah Gur 06 Aug '07

06 Aug '07

Is there anyone who can say whether any of the Boost libraries can help me on the subject of this message? Any help will be greatly appreciated.

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serialization build error (and possible fix)
by craigp 06 Aug '07

06 Aug '07

I couldn't build the latest boost from svn with boost build v2 (win32 with msvc 80 sp1, serialization wide-archive compilation/link problems). I've attached a patch which allowed it to build (dunno if this is the right way to fix the problem). It also seems that the following files get deleted after I run bjam... 'svn up' restores these files: Restored: D:\dev\boost\boost.svn\trunk\libs\function_types\build\timestamps\arity_loops Restored: D:\dev\boost\boost.svn\trunk\libs\function_types\build\timestamps\encoding Restored: D:\dev\boost\boost.svn\trunk\libs\function_types\build\timestamps\cc_names HTH, --craig Index: boost/archive/detail/interface_iarchive.hpp =================================================================== --- boost/archive/detail/interface_iarchive.hpp (revision 38471) +++ boost/archive/detail/interface_iarchive.hpp (working copy) @@ -32,7 +32,7 @@ namespace archive { namespace detail { -class BOOST_ARCHIVE_DECL(BOOST_PP_EMPTY()) basic_pointer_iserializer; +class BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY()) basic_pointer_iserializer; template<class Archive> class interface_iarchive @@ -51,9 +51,9 @@ } template<class T> - const BOOST_ARCHIVE_DECL(BOOST_PP_EMPTY()) basic_pointer_iserializer * + const BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY()) basic_pointer_iserializer * register_type(T * = NULL){ - const BOOST_ARCHIVE_DECL(BOOST_PP_EMPTY()) basic_pointer_iserializer & bpis = + const BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY()) basic_pointer_iserializer & bpis = pointer_iserializer<Archive, T>::get_instance(); this->This()->register_basic_serializer(bpis.get_basic_serializer()); return & bpis; Index: boost/archive/detail/interface_oarchive.hpp =================================================================== --- boost/archive/detail/interface_oarchive.hpp (revision 38471) +++ boost/archive/detail/interface_oarchive.hpp (working copy) @@ -32,7 +32,7 @@ namespace archive { namespace detail { -class BOOST_ARCHIVE_DECL(BOOST_PP_EMPTY()) basic_pointer_oserializer; +class BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY()) basic_pointer_oserializer; template<class Archive> class interface_oarchive @@ -51,9 +51,9 @@ } template<class T> - const BOOST_ARCHIVE_DECL(BOOST_PP_EMPTY()) basic_pointer_oserializer * + const BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY()) basic_pointer_oserializer * register_type(const T * = NULL){ - const BOOST_ARCHIVE_DECL(BOOST_PP_EMPTY()) basic_pointer_oserializer & bpos = + const BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY()) basic_pointer_oserializer & bpos = pointer_oserializer<Archive, T>::get_instance(); this->This()->register_basic_serializer(bpos.get_basic_serializer()); return & bpos; Index: libs/serialization/build/Jamfile.v2 =================================================================== --- libs/serialization/build/Jamfile.v2 (revision 38471) +++ libs/serialization/build/Jamfile.v2 (working copy) @@ -44,7 +44,6 @@ basic_xml_archive binary_iarchive binary_oarchive - codecvt_null extended_type_info extended_type_info_no_rtti extended_type_info_typeid @@ -66,6 +65,7 @@ binary_woarchive text_wiarchive text_woarchive + codecvt_null utf8_codecvt_facet xml_wgrammar xml_wiarchive ____________________________________________________________________________________ Pinpoint customers who are looking for what you sell. http://searchmarketing.yahoo.com/

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boost 1.34.1 Foreach conversion to iterators.
by chun ping wang 06 Aug '07

06 Aug '07

Hi i would like to know whats the best way to use BOOST_FOREACH and iterator. Example... BOOST_FOREACH(char c, String str) { first_c = c; // blah.. first iterator = c after condition x. second_c = c; // blah... second iterator = c after condition y. } str2.insert(first_c, second_c). Thanks for any help.

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Serialization issues with 1.34.0 and 1.34.1
by ben.carlyle＠wrsa.com.au 05 Aug '07

05 Aug '07

I tried to raise a bug with trac, but my request was rejected as possible spam. I am currently using the 1.32.0 boost library, but would like to get away from it. One of the main features I am using is boost::serialization. There are some problems with serialization in 1.32.0, in particular that shared_ptr needs to have the "serialization" header included before the real header. The mechanim for handling serialization of shared_ptr is also a problem. Bitset support is also missing. I was hoping to pick up 1.34.0, and have since also made an attempt to use 1.34.1. However, both of these revision appear to have regressions against the 1.32.0 versions. Here is the first bug report I attempted to submit == bug 1: boost/serialization/optional doesn't include necessary headers == The following function refers to version<T>::value without an include of boost/serialization/version.hpp, resulting in user code that won't compile. It is possible to work around this problem by including boost/serialization/version.hpp before including boost/serialization/optional.hpp. I did not require a work-around with boost 1.32.0, but both 1.34.0 and 1.34.1 appear to need the work-around. {{{ template<class Archive, class T> void save( Archive & ar, const boost::optional<T> & t, const unsigned int /*version*/ ) }}} == bug 2: Archive headers missing multiple(?) include files == Here is my test program: #include <boost/archive/binary_iarchive.hpp> #include <boost/archive/binary_oarchive.hpp> #include <boost/archive/xml_iarchive.hpp> #include <boost/archive/xml_oarchive.hpp> int main(void) { return 0; } Here are the first few lines of gcc output: ../boost/boost/boost/archive/basic_binary_iprimitive.hpp:72: error: ISO C++ forbids declaration of ‘scoped_ptr’ with no type ../boost/boost/boost/archive/basic_binary_iprimitive.hpp:72: error: invalid use of ‘::’ ../boost/boost/boost/archive/basic_binary_iprimitive.hpp:72: error: expected ‘;’ before ‘<’ token ../boost/boost/boost/archive/basic_binary_iprimitive.hpp:73: error: ISO C++ forbids declaration of ‘basic_streambuf_locale_saver’ with no type ../boost/boost/boost/archive/basic_binary_iprimitive.hpp:73: error: expected ‘;’ before ‘<’ token ../boost/boost/boost/archive/basic_binary_iprimitive.hpp: In member function ‘void boost::archive::boost::archive::basic_binary_iprimitive<Archive, Elem, Tr> ::load_binary(void*, size_t)’: ../boost/boost/boost/archive/basic_binary_iprimitive.hpp:150: error: ‘throw_exception’ is not a member of ‘boost::archive::boost’ It looks to my untrained eye that there could be several includes missing, or perhaps some circular including going on. == This second bug hits pretty early in my build process, so I would not be surprised if there were additional problems down the line. I am using an ubuntu 7.04 distribution, gcc 4.1.2, etc. Benjamin.

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WIN32_LEAN_AND_MEAN
by KSpam 05 Aug '07

05 Aug '07

My projects need to define WIN32_LEAN_AND_MEAN. Unfortunately, they receive many compilation warnings due to macro redefinition in the following Boost headers (1.34.1). boost/iostreams/detail/system_failure.hpp boost/spirit/iterator/impl/file_iterator.ipp I understand that I can avoid the need to define WIN32_LEAN_AND_MEAN by ensuring that Boost headers are always included prior to <windows.h>. I do not like the idea of include order dependencies, as I am certain that I will come back to bite me down the road. Another option would be to turn the particular warning off; however, I would rather not do this. Would it be prudent to patch the Boost headers to only define WIN32_LEAN_AND_MEAN if it is not already defined? If not, is there another solution that I am overlooking. Thanks, Justin

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Boost.Lambda - using member functions
by Daniel Dilts 05 Aug '07

05 Aug '07

I'm trying to figure out how to use the boost.lambda library, and I'm having some issues, probably stupid ones, but still, issues. In the following code I want to remove all obects from m_devices that only have 1 remaining reference (unique() returns true). Yes, I know that this would be pretty easy, using regular function pointers, and the like, however, I'm trying to learn this library. What am I doing wrong? I would also appreciate any pointers for using boost.lambda Whenever I compile the following code on VS2005 I get the following errors: Warning 1 warning C4512: 'boost::lambda::identity<T>' : assignment operator could not be generated c:\program files (x86)\boost\boost_1_34_0\boost\lambda\detail\lambda_functor_base.hpp 43 Warning 2 warning C4512: 'boost::lambda::lambda_functor<T>' : assignment operator could not be generated c:\program files (x86)\boost\boost_1_34_0\boost\lambda\detail\lambda_functors.hpp 204 Warning 3 warning C4512: 'boost::lambda::identity<T>' : assignment operator could not be generated c:\program files (x86)\boost\boost_1_34_0\boost\lambda\detail\lambda_functor_base.hpp 43 Warning 4 warning C4512: 'boost::lambda::lambda_functor<T>' : assignment operator could not be generated c:\program files (x86)\boost\boost_1_34_0\boost\lambda\detail\lambda_functors.hpp 204 Error 5 error C2451: conditional expression of type 'boost::lambda::detail::member_pointer_caller<RET,A,B>' is illegal c:\program files (x86)\microsoft visual studio 8\vc\include\algorithm 87 Error 6 error C2675: unary '!' : 'boost::lambda::detail::member_pointer_caller<RET,A,B>' does not define this operator or a conversion to a type acceptable to the predefined operator c:\program files (x86)\microsoft visual studio 8\vc\include\algorithm 1240 Error 7 error C2582: 'operator =' function is unavailable in 'std::pair<_Ty1,_Ty2>' c:\program files (x86)\microsoft visual studio 8\vc\include\algorithm 1241 My code for the class I'm having trouble with follows: #pragma once #include <string> #include <map> #include <boost/shared_ptr.hpp> #include "SocketDevice.h" namespace Socket { class SocketFactory { public: SocketFactory(std::string Host, std::string Port); virtual ~SocketFactory(void); protected: std::pair<std::string, std::string> m_dest; boost::shared_ptr<SocketDevice> m_device; static std::map<std::pair<std::string, std::string>, boost::shared_ptr<SocketDevice>> m_devices; private: void RemoveUnreferencedSockets(void); }; }; #include "SocketFactory.h" #include <boost/lambda/lambda.hpp> #include <boost/bind.hpp> Socket::SocketFactory::~SocketFactory(void) { } void Socket::SocketFactory::RemoveUnreferencedSockets(void) { std::remove_if(Socket::SocketFactory::m_devices.begin(), Socket::SocketFactory::m_devices.end(), boost::lambda::_1 ->* &std::pair<std::pair<std::string, std::string>, boost::shared_ptr<SocketDevice> >::second ->* &boost::shared_ptr<SocketDevice>::unique); }

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[1.34.0][iostreams] regex filter seg faults when zero matches found
by Evan Herbst 04 Aug '07

04 Aug '07

The suffix pointer is used in a copy() after only having been initialized to NULL. I attach a patch. My compliments to the chef, otherwise. - Evan

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