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

degine MutableGraph
by BomBielFil 08 Feb '08

08 Feb '08

Hi I would use "copy_graph" function, How can I define an empty MutableGraph?? Best Regards -Bombielfil-

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silly newbies problem with date_time...
by joh3＠lithophile.com 07 Feb '08

07 Feb '08

I am sure this will get me slapping my head with my own stuidity, can some one tell me why i am getting this message when i try to compile my application.. /usr/include/boost/date_time/c_time.hpp:49:70: error: macro "localtime" passed 2 arguments, but takes just 1 /usr/include/boost/date_time/c_time.hpp:57:67: error: macro "gmtime" passed 2 arguments, but takes just 1 In file included from /usr/include/boost/date_time/gregorian/gregorian_types.hpp:26, from /usr/include/boost/date_time/gregorian/gregorian.hpp:20, from ./call_asf_import.h:25, i am using a ubuntu linux box with gcc >Target: x86_64-linux-gnu >Configured with: ../src/configure -v >--enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr >--enable-shared --with-system-zlib --libexecdir=/usr/lib >--without-included-gettext --enable-threads=posix --enable-nls >--with-gxx-include-dir=/usr/include/c++/4.1.3 --program-suffix=-4.1 >--enable-__cxa_atexit --enable-clocale=gnu --enable-libstdcxx-debug >--enable-mpfr --enable-checking=release x86_64-linux-gnu >Thread model: posix >gcc version 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) i include the following boost lines in the header... #include <boost/filesystem/path.hpp> #include <boost/filesystem/operations.hpp> // includes path.hpp #include <boost/filesystem/convenience.hpp> // includes all needed //Boost.Filesystem declarations #include "boost/date_time/gregorian/gregorian.hpp" #include "boost/date_time/posix_time/posix_time.hpp" #include "boost/date_time/local_time/local_time.hpp" .... and the gcc line looks like this.... g++ -g -ggdb -Wall -fmessage-length=0 -fPIC -DPIC -fexceptions -I/usr/include/mysql -DBIG_JOINS=1 -I/usr/include -I/usr/include/libxml++-2.6 -I/usr/lib/libxml++-2.6/include -I/usr/include/libxml2 -I/usr/include/glibmm-2.4 -I/usr/lib/glibmm-2.4/include -I/usr/include/sigc++-2.0 -I/usr/lib/sigc++-2.0/include -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS -DDEBIAN -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/lib/perl/5.8/CORE -DPERL_NO_SHORT_NAMES -pthread -fmessage-length=0 -c call_asf_import.cxx -I/export/mirror/joes-stuff/PS_code//include/external -I/export/mirror/joes-stuff/PS_code//include/native -I/export/mirror/joes-stuff/PS_code//obj -I/export/mirror/joes-stuff/PS_code//src -I . -I/usr/include/boost -I/usr/include/stlsoft -I/usr/include/mysql any help would be greatly appreciated. Cheers Joe

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Does boost have a float-to-integer conversion?
by linux＠celticblues.com 07 Feb '08

07 Feb '08

Does boost have a float-to-integer conversion? I need a routine to convert a 32 bit single precision float (1S 8E 23M) to integer, with the end goal being that I can take the integer break it down into bytes... i.e.bits 0-7, 8-15,16-23,24-31.

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need help configuring Boost for CodeSourcery ARM g++ compiler
by Rob Desbois 07 Feb '08

07 Feb '08

I need to compile Boost for an embedded target running GNU/Linux on an ARM CPU. The toolchain for this is proprietary, compiler executable names are like "arm-none-linux-gnueabi-g++". I'm having trouble compiling with this toolchain though - I can't figure out (even with the documentation) what I'm doing wrong, but AFAICT Boost.Build keeps using my default gcc toolchain. In case it's relevant I'm on Cygwin using a self-compiled bjam executable, Boost is v1.34.1 My user-config.jam looks like this: <<<<<<<<<< # Compiler configuration # using gcc ; using gcc : : arm-none-linux-gnueabi-gcc ; using g++ : : arm-none-linux-gnueabi-g++ ; # Python configuration using python : 2.5 : /usr ; >>>>>>>>>> A dry run of the compilation with command: ./bjam --with-iostreams --with-regex --with-serialization --with-test --with-thread --toolset=gcc stage -n Produces a lot of output along these lines: <<<<<<<<<< Building Boost.Regex with the optional Unicode/ICU support disabled. Please refer to the Boost.Regex documentation for more information (don't panic: this is a strictly optional feature). ...patience... ...found 2215 targets... ...updating 977 targets... [--- snipped a load of 'MkDir1' lines ---] gcc.compile.c++ bin.v2/libs/serialization/build/gcc-3.4.4/release/threading-multi/basic_archive.o "g++" -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -mthreads -DBOOST_ALL_NO_LIB=1 -DBOOST_SERIALIZATION_DYN_LINK=1 -DNDEBUG -I"." -c -o "bin.v2\libs\serialization\build\gcc-3.4.4\release\threading-multi\basic_archive.o" "libs\serialization\src\basic_archive.cpp" >>>>>>>>>> Why is it continuing to use "g++" when i've specified a different g++ executable to be used? Can anyone help me please? TIA, --rob

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[bind] argument binding to templated function
by Sebastian Weber 07 Feb '08

07 Feb '08

Hello, I'm quite puzzled howto bind arguments to the put-function from the property maps-library. I tried a lot, but I do not know what is wrong with: boost::function< void () > ua = lambda::bind(&boost::put<Property, Value>, p, k, val); Here Property ist the type of the PropertyMap, Value the type of the value. p is the PropertyMap, k the key into it, and val the value I want to save there. However, this gives me (boost 1.34.1, g++ 4.1.2) an "unresolved overloaded function type" error, but whats wrong here? Any help would be great. Thanks in advance. Sebastian

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put problem 2 whit graph
by BomBielFil 07 Feb '08

07 Feb '08

Hi I've a problem whit "put" function. My simple code is: -------------------------- typedef Is_finite<Triangulation> Filter; typedef boost::filtered_graph<Triangulation,Filter,Filter> Finite_triangulation; typedef boost::graph_traits<Finite_triangulation>::vertex_descriptor vertex_descriptor; typedef boost::graph_traits<Finite_triangulation>::vertex_iterator vertex_iterator; typedef boost::graph_traits<Finite_triangulation>::edge_descriptor edge_descriptor; typedef boost::graph_traits<Finite_triangulation>::edge_iterator edge_iterator; int main(int,char*[]) { Triangulation t; Filter is_finite(t); Finite_triangulation ft(t, is_finite, is_finite); //graph t.insert(Point(0.4, 1)); t.insert(Point(1, 0.3)); t.insert(Point(0.0, -0.9)); t.insert(Point(-1, 0)); t.insert(Point(1, 2)); boost::property_map<Triangulation,boost::edge_weight_t>::type weight_map=get(boost::edge_weight,ft); edge_iterator eit,eend; for (boost::tie(eit,eend)=boost::edges(ft); eit!=eend; ++eit) { std::cout << "PESO: " << get(weight_map,*eit) << "\n"; put(weight_map,*eit ,100); std::cout << "PESO2: " << get(weight_map,*eit) << "\n"; } return 0; } ------ at compile time I've: "/property_map.hpp:319: error: invalid lvalue in assignment" Why get is right and put no??Can help me?? Best regards -Bombielfil-

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A strange local facet error.
by Yeti_RO 07 Feb '08

07 Feb '08

Well shortly presented. We have this code form the Boost [url=http://www.boost.org/libs/serialization/doc/codecvt.html]site.[/url] // My encoding type typedef wchar_t ucs4_t; std::locale old_locale; std::locale utf8_locale(old_locale,new utf8_codecvt_facet<ucs4_t>); // Set a New global locale std::locale::global(utf8_locale); // Send the UCS-4 data out, converting to UTF-8 { std::wofstream ofs("data.ucd"); ofs.imbue(utf8_locale); std::copy(ucs4_data.begin(),ucs4_data.end(), std::ostream_iterator<ucs4_t,ucs4_t>(ofs)); } And the error messages: : error C2661: 'std::locale::facet::operator new' : no overloaded function takes 3 arguments : error C2059: syntax error : ')' : error C2065: 'utf8_locale' : undeclared identifier : error C2065: 'ucs4_data' : undeclared identifier : error C2228: left of '.begin' must have class/struct/union Any ideas why ? ANd mainly how to fix it ? Am I using something wrong. Any other advice. -- View this message in context: http://www.nabble.com/A-strange-local-facet-error.-tp15249652p15249652.html Sent from the Boost - Users mailing list archive at Nabble.com.

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Crash while using binary_oarchive on Sol86 with Forte 11 and stlport
by Sharad Gaur 07 Feb '08

07 Feb '08

Hi all, Following piece of code is crashing for us on Sol86 with Forte 11 compiler and stlport. Let me know if someone has any idea about this. SunOS insol8614 5.10 Generic_118855-33 i86pc i386 i86pc CC: Sun C++ 5.8 Patch 121018-11 2007/05/02 int main() { using namespace std; const std::string s("Test..................\n") ; ofstream file("hello.gz", ios::binary); boost::iostreams::filtering_ostream ofilter; ofilter.push(boost::iostreams::gzip_compressor()) ; ofilter.push(file); boost::archive::binary_oarchive oar(ofilter) ; oar << s; } Here is the stack trace. std::basic_streambuf<char,std::char_traits<char> >::pubsync(0x8046730) boost::iostreams::detail::flush_device_impl<boost::iostreams::ostream_tag>::flush<std::basic_ostream<char,std::char_traits<char> > >(t = CLASS) boost::iostreams::flush<std::basic_ostream<char,std::char_traits<char> > >(t = CLASS) boost::iostreams::detail::close_impl<boost::iostreams::any_tag>::close<std::basic_ostream<char,std::char_traits<char> > >(t = CLASS, which = 24) boost::iostreams::close<boost::reference_wrapper<std::basic_ostream<char,std::char_traits<char> > > >(t = CLASS, which = 24) boost::iostreams::detail::mode_adapter<boost::iostreams::output,std::basic_ostream<char,std::char_traits<char> > >::close(this = 0x80f56d8, which = 24) boost::iostreams::detail::close_impl<boost::iostreams::closable_tag>::close<boost::iostreams::detail::mode_adapter<boost::iostreams::output,std::basic_ostream<char,std::char_traits<char> > > >(t = CLASS, which = 16) boost::iostreams::close<boost::iostreams::detail::mode_adapter<boost::iostreams::output,std::basic_ostream<char,std::char_traits<char> > > >(t = CLASS, which = 16) boost::iostreams::detail::device_wrapper_impl<boost::iostreams::any_tag>::close<boost::iostreams::detail::mode_adapter<boost::iostreams::output,std::basic_ostream<char,std::char_traits<char> > >,boost::iostreams::detail::linked_streambuf<char,std::char_traits<char> > >(dev = CLASS, _ARG2 = (nil), which = 16) boost::iostreams::detail::concept_adapter<boost::iostreams::detail::mode_adapter<boost::iostreams::output,std::basic_ostream<char,std::char_traits<char> > > >::close<boost::iostreams::detail::linked_streambuf<char,std::char_traits<char> > >(this = 0x80f56d8, which = 16, dev = (nil)) boost::iostreams::detail::indirect_streambuf<boost::iostreams::detail::mode_adapter<boost::iostreams::output,std::basic_ostream<char,std::char_traits<char> > >,std::char_traits<char>,std::allocator<char>,boost::iostreams::output>::close(this = 0x80f56a0, which = 16) boost::iostreams::detail::chain_base<boost::iostreams::chain<boost::iostreams::output,char,std::char_traits<char>,std::allocator<char> >,char,std::char_traits<char>,std::allocator<char>,boost::iostreams::output>::close(b = 0x80f56a0, m = 16) boost::iostreams::detail::chain_base<boost::iostreams::chain<boost::iostreams::output,char,std::char_traits<char>,std::allocator<char> >,char,std::char_traits<char>,std::allocator<char>,boost::iostreams::output>::closer::operator()(this = 0x8046470, b = 0x80f56a0) std::for_each<std::_List_iterator<boost::iostreams::detail::linked_streambuf<char,std::char_traits<char> >*,std::_Nonconst_traits<boost::iostreams::detail::linked_streambuf<char,std::char_traits<char> >*> >,boost::iostreams::detail::chain_base<boost::iostreams::chain<boost::iostreams::output,char,std::char_traits<char>,std::allocator<char> >,char,std::char_traits<char>,std::allocator<char>,boost::iostreams::output>::closer>(__first = STRUCT, __last = STRUCT, __f = STRUCT) boost::iostreams::detail::chain_base<boost::iostreams::chain<boost::iostreams::output,char,std::char_traits<char>,std::allocator<char> >,char,std::char_traits<char>,std::allocator<char>,boost::iostreams::output>::chain_impl::close(this = 0x80b13e0) boost::iostreams::detail::chain_base<boost::iostreams::chain<boost::iostreams::output,char,std::char_traits<char>,std::allocator<char> >,char,std::char_traits<char>,std::allocator<char>,boost::iostreams::output>::chain_impl::~chain_impl(this = 0x80b13e0) boost::checked_delete<boost::iostreams::detail::chain_base<boost::iostreams::chain<boost::iostreams::output,char,std::char_traits<char>,std::allocator<char> >,char,std::char_traits<char>,std::allocator<char>,boost::iostreams::output>::chain_impl>(x = 0x80b13e0) boost::detail::sp_counted_impl_p<boost::iostreams::detail::chain_base<boost::iostreams::chain<boost::iostreams::output,char,std::char_traits<char>,std::allocator<char> >,char,std::char_traits<char>,std::allocator<char>,boost::iostreams::output>::chain_impl>::dispose(this = 0x80b26a8) boost::detail::sp_counted_base::release(this = 0x80b26a8) boost::detail::shared_count::~shared_count(this = 0x80466c8) boost::shared_ptr<boost::iostreams::detail::chain_base<boost::iostreams::chain<boost::iostreams::output,char,std::char_traits<char>,std::allocator<char> >,char,std::char_traits<char>,std::allocator<char>,boost::iostreams::output>::chain_impl>::~shared_ptr(0x80466c4) boost::iostreams::detail::chain_base<boost::iostreams::chain<boost::iostreams::output,char,std::char_traits<char>,std::allocator<char> >,char,std::char_traits<char>,std::allocator<char>,boost::iostreams::output>::~chain_base(0x80466c4) boost::iostreams::chain<boost::iostreams::output,char,std::char_traits<char>,std::allocator<char> >::~chain(0x80466c4) boost::iostreams::detail::filtering_stream_base<boost::iostreams::chain<boost::iostreams::output,char,std::char_traits<char>,std::allocator<char> >,boost::iostreams::public_>::~filtering_stream_base(0x80466b8, 0x80b07b4) boost::iostreams::filtering_stream<boost::iostreams::output,char,std::char_traits<char>,std::allocator<char>,boost::iostreams::public_>::~filtering_stream(this = 0x80466b8) main()

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Another desperate request for help with a simple IOStreams sink and filter
by Stefan Arentz 07 Feb '08

07 Feb '08

I'm looking for some help with the following code where I try to implement an aggregate filter and a sink. This super simple example is supposed to print the xorred input but instead it prints: The result is: do_filter write: 01+x1+x,*!x76= Does anyone understand why the filtering and sink.write are not done as part of the copy operation? The last two lines should be printed as part of the copy process! It seems they are executed as part of destructing these objects instead? This stuff should be so simple :-/ S. #include <cctype> #include <iostream> #include <memory> #include <string> #include <boost/iostreams/copy.hpp> #include <boost/iostreams/stream.hpp> #include <boost/iostreams/device/back_inserter.hpp> #include <boost/iostreams/device/file_descriptor.hpp> #include <boost/iostreams/device/file.hpp> #include <boost/iostreams/filter/aggregate.hpp> #include <boost/iostreams/filtering_stream.hpp> /// template< typename Ch, typename Alloc = std::allocator<Ch> > class basic_xor_filter : public boost::iostreams::aggregate_filter<Ch, Alloc> { private: typedef boost::iostreams::aggregate_filter<Ch, Alloc> base_type; public: typedef typename base_type::char_type char_type; typedef typename base_type::category category; typedef std::basic_string<Ch> string_type; public: basic_xor_filter(Ch key) : key_(key) { } private: typedef typename base_type::vector_type vector_type; void do_filter(const vector_type& src, vector_type& dest) { std::cout << "do_filter" << std::endl; for (size_t i = 0; i < src.size(); ++i) { dest.push_back(src[i] ^ key_); } } private: Ch key_; }; BOOST_IOSTREAMS_PIPABLE(basic_xor_filter, 1) typedef basic_xor_filter<char> xor_filter; typedef basic_xor_filter<wchar_t> wxor_filter; /// class my_string_sink : public boost::iostreams::sink { public: my_string_sink(std::string& buffer) : buffer_(buffer) { } public: std::string const& str() { return buffer_; } public: std::streamsize write(const char* s, std::streamsize n) { std::cout << "write: " << std::string(s,n) << std::endl; buffer_.append(s, n); return n; } private: std::string& buffer_; }; /// int main() { { // This does not work boost::iostreams::filtering_istream in; in.push(boost::make_iterator_range("This is try one")); std::string result; boost::iostreams::filtering_ostream out; out.push(xor_filter('X')); out.push(my_string_sink(result)); boost::iostreams::copy(in, out); std::cout << "The result is: " << result << std::endl; } }

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[signals] signals::slot_type not working?
by Robert Dailey 06 Feb '08

06 Feb '08

Hi, below is my code: template< InputSubscription t_sub > static void subscribe( SignalBank const& bank, typename GetSignal<t_sub>::signal::slot_type& slot ) { using boost::fusion::at_c; at_c<t_sub>( bank.signals ).connect( slot ); } void mouseCB( int, int ) { } void footest() { SignalBank bank; //boost::fusion::at_c<1>( bank.signals )( 3, 4 ); subscribe<INPUTSUB_MOUSE_MOTION>( bank, &mouseCB ); }; Notice that I have a wrapper function, 'subscribe', which uses the slot_type member of the signals class to pass the slot to the connect() function. However, visual studio 9 reports the following error: *error C2664: 'bob::input::subscribe' : cannot convert parameter 2 from 'void (__cdecl *)(int,int)' to 'boost::slot<SlotFunction> &' with [ SlotFunction=boost::function<void (int,int)> ] *Any solutions to fix the problem?* *

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