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FStream compile problem in VC6
by Adam 01 Dec '04

01 Dec '04

Hi, I'm trying to compile the following in Visual C++6.0 #include "boost/config.hpp" #include "boost/filesystem/operations.hpp" // includes boost/filesystem/path.hpp #include "boost/filesystem/fstream.hpp" // ditto #include <iostream> // for std::cout using namespace boost::filesystem; int main(int argc, char* argv[]) { remove_all( "foobar" ); create_directory( "foobar" ); boost::filesystem::ofstream file( "foobar/cheeze" ); file << "tastes good!\n"; file.close(); if ( !exists( "foobar/cheeze" ) ) std::cout << "Something is rotten in foobar\n"; return 0; } and I keep getting an error saying that c:\program files\microsoft visual studio\vc98\include\boost\filesystem\fstream.hpp(95) : error C2504: 'basic_ofstream<char,struct std::char_traits<char> >' : base class undefined C:\Program Files\Microsoft Visual Studio\MyProjects\boost_filesystem\boost_filesystem.cpp(17) : see reference to class template instantiation 'boost::filesystem::basic_ofstream<char,struct std::char_traits<char> >' being compiled which I think means that it can't find the implementation for std::basic_ofstream<charT,traits> . I'm not sure how to get around this because I can define a std::basic_ofstream, without problem. Thanks for help, Adam

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Format Library - Asterisk Support
by Barak Simon 01 Dec '04

01 Dec '04

Hi, I have noticed that the format library does not support at present the printf asterisk for providing dynamic width as an extra parameter. Unfortunately my users need to use this widely and I would really hate to revert back to a non-typesafe solution. a. Are there any plans to support it in near future? b. If not, is there an easy way to add that to parsing.hpp, parse_printf_directive method, parse_width & parse_precision sections? currently the asterisk is ignored, and the library throws an exception thinking it has an extra parameter. c. Is there any workaround I miss which may give me the same expected result of providing say "%*s, width, charPtr" ? (I have 'width' and a non-null-terminated char pointer and need to construct the correct string from them without doing unnecessary copying...) Many thanks, Barak ________________________ Barak Simon GED IT Core Platform Deutsche Bank 190 George St. Sydney, 2000 Phone +61 2 925 85070 Fax +61 2 925 95050 -- This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.

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Q: VC7 boost1.32 date_time\time_system_counted.hpp(57) : warning C4244: 'initializing'
by Dan Dimerman 01 Dec '04

01 Dec '04

Hello, >From the department of unexplained warnings... I found this one which I hope someone out there could help me kill. The warning reads: C:\Boost\include\boost-1_32\boost\date_time\time_system_counted.hpp(57) : warning C4244: 'initializing' : conversion from 'boost::date_time::counted_time_rep<config>::int_type' to 'boost::date_time::gregorian_calendar_base<ymd_type_,date_int_type_>::date_int_type', possible loss of data What can I do to get rid of this one? many thanks Dan --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com) Version: 6.0.803 / Virus Database: 546 - Release Date: 30-Nov-04

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abort when constructing filesystem::path object
by Richard Wolf 01 Dec '04

01 Dec '04

Hi I'm trying to use the filesystem library, and I get an abort when trying to initialise a path object with a string containing a space. #include <boost/filesystem/path.hpp> #include <iostream> int main() { boost::filesystem::path p1("hello"); std::cout << p1.string(); boost::filesystem::path p2("hello world"); std::cout << p2.string(); } when run, this prints: helloAborted I couldn't find anything saying that the string path constructor can't contain a space. Am I doing something wrong, or is this a bug? Using gcc 3.3.4 on Debian. thanks, Richard

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[Q] Which compiler tool for MSVC 2005 (Beta)
by Michael Peterson 01 Dec '04

01 Dec '04

I have MSVC 2005 (Beta) installed and was wondering with what compiler toolset, if any, should I use to build boost 1_32_0? Also, any advice as to whether I should use Microsoft's stl or the open source version (I have 4.6.2)? Thanks, Michael

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Help: Building Boost with Different Compiler Options
by Paul Dubuc 30 Nov '04

30 Nov '04

I'm trying to build Boost 1.32 on Solaris 8 (SPARC) with GCC 3.3.4. I want to build a 64-bit version of the libraries and this requires pasing the -m64 option to the compiler. How do I tell bjam to do this? I've tried: export TOOLSET_OPT="-sGCC_ROOT_DIRECTORY=${GCCDIR} -exec-prefix=${PWD}/${GCCVERSION}/64 \"\"-sGXX=g++ -m64\"\" \"\"-sGCC=gcc -m64\"\"" ... bjam ${TOOLSET_OPT} \ -sTOOLS=${TOOLSET} \ --prefix=${PWD}/.. \ --with-python-root=/projects/gnu/sparc-sun-solaris8 \ install It dosn't seem to work. I still get 32-bit libraries. Help would be appreciated, Thanks. -- Paul M. Dubuc

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Re: [Boost-users] Errors when playing with lambda (1.32.0, VC7.1)
by John.Wismar＠autozone.com 30 Nov '04

30 Nov '04

"Peter Dimov" <pdimov(a)mmltd.net> wrote: > You are trying to invoke the non-const member > function Foo::print on a const Foo. and > You didn't call the function: (&_1->*&Foo::print)(). Thanks for the reply! Both seem obvious once the errors have been pointed out, but I was not making any headway by reading the error messages (in the first case) or stepping through the code execution (in the second).... I'll keep working with it. Thanks again!! -------------------------------- John Wismar john.wismar(a)autozone.com

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Errors when playing with lambda (1.32.0, VC7.1)
by John.Wismar＠autozone.com 30 Nov '04

30 Nov '04

I'm taking a look at the Lambda library, and writing some toy programs, and I keep coming up with errors, and I can't figure out what the problems are.... Example 1: This works as expected: using namespace boost::lambda; class Foo { public: void print() { std::cout << "Foo::print()\n"; } }; template <class Container, class Function> Function for_all(Container cont, Function f) { return std::for_each(cont.begin(), cont.end(), f); } int main(int argc, char* argv[]) { std::vector<Foo> vec; //Fill vec for_all(vec, (bind(&Foo::print, _1))); return 0; } If I change the declaration of for_all to take the container by const reference, I get errors [See Error 1 pasted in below]: using namespace boost::lambda; class Foo { public: void print() { std::cout << "Foo::print()\n"; } }; template <class Container, class Function> Function for_all(Container const &cont, Function f) { return std::for_each(cont.begin(), cont.end(), f); } int main(int argc, char* argv[]) { std::vector<Foo> vec; //Fill vec for_all(vec, (bind(&Foo::print, _1))); return 0; } Example 2: It looks from the docs like I should be able to rewrite the bind expression above using operator ->*, like so: for_all(vec, (&_1 ->* &Foo::print)); And, in fact this compiles cleanly (regardless of whether the container is passed by value or by const reference). Foo::print() never gets called, though. What am I doing wrong or not understanding here? Thanks in advance!!! -------------------------------- John Wismar john.wismar(a)autozone.com ------------------------------------------------------------------------------------------------------------- [Error 1] c:\dev\alldata\Dev\3rd Party\boost\boost\lambda\detail\actions.hpp(87) : error C2665: 'boost::lambda::function_adaptor<Func>::apply' : none of the 2 overloads can convert parameter 2 from type 'const std::allocator<_Ty>::value_type' with [ Func=boost::lambda::return_type_N<boost::lambda::function_action<2>,boost::lambda::lambda_functor_base<boost::lambda::action<2,boost::lambda::function_action<2>>,boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>>::sig<boost::tuples::tuple<const std::allocator<Foo>::value_type &,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type>>::rets_t>::plain_Func ] and [ _Ty=Foo ] c:\dev\alldata\Dev\3rd Party\boost\boost\lambda\detail\function_adaptors.hpp(193): could be 'Result boost::lambda::function_adaptor<Func>::apply<RET>(Result (__thiscall Foo::* )(void),Object *)' with [ Result=void, Func=boost::lambda::return_type_N<boost::lambda::function_action<2>,boost::lambda::lambda_functor_base<boost::lambda::action<2,boost::lambda::function_action<2>>,boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>>::sig<boost::tuples::tuple<const std::allocator<Foo>::value_type &,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type>>::rets_t>::plain_Func , RET=boost::lambda::lambda_functor_base<boost::lambda::action<2,boost::lambda::function_action<2>>,boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boo st::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>>::sig<boost::tuples::tuple<const std::allocator<Foo>::value_type &,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type>>::type, Object=Foo ] c:\dev\alldata\Dev\3rd Party\boost\boost\lambda\detail\function_adaptors.hpp(197): or 'Result boost::lambda::function_adaptor<Func>::apply<RET>(Result (__thiscall Foo::* )(void),Object &)' with [ Result=void, Func=boost::lambda::return_type_N<boost::lambda::function_action<2>,boost::lambda::lambda_functor_base<boost::lambda::action<2,boost::lambda::function_action<2>>,boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>>::sig<boost::tuples::tuple<const std::allocator<Foo>::value_type &,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type>>::rets_t>::plain_Func , RET=boost::lambda::lambda_functor_base<boost::lambda::action<2,boost::lambda::function_action<2>>,boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boo st::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>>::sig<boost::tuples::tuple<const std::allocator<Foo>::value_type &,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type>>::type, Object=Foo ] while trying to match the argument list '(const rt0 , const std::allocator<_Ty>::value_type)' with [ _Ty=Foo ] c:\dev\alldata\Dev\3rd Party\boost\boost\lambda\detail\lambda_functor_base.hpp(408) : see reference to function template instantiation 'RET boost::lambda::function_action<I>::apply<RET,U,const Foo>(A1 & ,A2 &)' being compiled with [ RET=boost::lambda::lambda_functor_base<boost::lambda::action<2,boost::lambda::function_action<2>>,boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>>::sig<boost::tuples::tuple<const std::allocator<Foo>::value_type &,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type>>::type, I=2, U=const rt0, A1=const rt0, A2=const std::allocator<Foo>::value_type ] c:\dev\alldata\Dev\3rd Party\boost\boost\lambda\detail\lambda_functors.hpp(148) : see reference to function template instantiation 'RET boost::lambda::lambda_functor_base<Act,Args>::call<boost::lambda::lambda_functor_base<Act,Args>::sig<SigArgs>::type,A,const boost::tuples::null_type,const boost::tuples::null_type,const boost::tuples::null_type>(A &,B &,C &,Env &) const' being compiled with [ RET=boost::lambda::lambda_functor_base<boost::lambda::action<2,boost::lambda::function_action<2>>,boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>>::sig<boost::tuples::tuple<const std::allocator<Foo>::value_type &,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type>>::type, Act=boost::lambda::action<2,boost::lambda::function_action<2>>, Args=boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::typ e,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>, SigArgs=boost::tuples::tuple<const std::allocator<Foo>::value_type &,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type>, A=const std::allocator<Foo>::value_type, B=const boost::tuples::null_type, C=const boost::tuples::null_type, Env=const boost::tuples::null_type ] c:\DevTools\VS.NET2003\Vc7\include\algorithm(21) : see reference to function template instantiation 'boost::lambda::lambda_functor_base<Act,Args>::sig<SigArgs>::type boost::lambda::lambda_functor<T>::operator ()<const std::allocator<_Ty>::value_type>(A &) const' being compiled with [ Act=boost::lambda::action<2,boost::lambda::function_action<2>>, Args=boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>, SigArgs=boost::tuples::tuple<const std::allocator<Foo>::value_type &,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type,boost::tuples::null_type>, T=boost::lambda::lambda_functor_base<boost::lambda::action<2,boost::lambda::function_action<2>>,boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<b oost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>>, _Ty=Foo, A=const std::allocator<Foo>::value_type ] c:\Temp\LambdaTest\LambdaTest.cpp(29) : see reference to function template instantiation '_Fn1 std::for_each<std::vector<_Ty>::const_iterator,Function>(_InIt,_InIt,_Fn1)' being compiled with [ _Fn1=boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost::lambda::action<2,boost::lambda::function_action<2>>,boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>>>, _Ty=Foo, Function=boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost::lambda::action<2,boost::lambda::function_action<2>>,boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>>>, _InIt=std::vector<Foo>::const_iterator ] c:\Temp\LambdaTest\LambdaTest.cpp(35) : see reference to function template instantiation 'Function for_all<std::vector<_Ty>,boost::lambda::lambda_functor<T>>(const Container &,Function)' being compiled with [ Function=boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost::lambda::action<2,boost::lambda::function_action<2>>,boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>>>, _Ty=Foo, T=boost::lambda::lambda_functor_base<boost::lambda::action<2,boost::lambda::function_action<2>>,boost::tuples::tuple<const boost::lambda::detail::bind_traits<void (__thiscall Foo::* const )(void)>::type,const boost::lambda::detail::bind_traits<const boost::lambda::placeholder1_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type,boost::lambda::detail::bind_traits<boost::tuples::null_type>::type>>, Container=std::vector<Foo> ]

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Help with serializating an abstract object
by Jeffrey Holle 30 Nov '04

30 Nov '04

I'm running into trouble handling an abstract object in my attempt to apply boost.serialization to my application. Since it doesn't have state, initially I didn't add serialize methods to this class, and got compilization errors for want of these methods. Next, I added noop methods, and got errors because the serialization package attempted to construct an abstract class. I see there is an is_abstract template, but don't know how to employ it. Can somebody give me some pointers? Note that I've choosen to implement non-templated serialize methods, using a forwared reference of the desired archive classes. Should this template be in the definition file, or implementation file (inside or outside the serialize method(s))?

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Problem with including boost/serialization/shared_ptr.hpp
by Jeffrey Holle 29 Nov '04

29 Nov '04

I'm attempting to apply the boost::serialization library to my application. Because it is fairly large, I've choosing to implement the serialize methods as non-templates. Such a tactic is used in some of the examples, for instance demo_polymorphic_A.hpp. This means that I don't include any boost.serialization or boost.archive headers in my definition files. A forward reference to the specific archive object is made instead. I've run into trouble with an object wrapped in a shared_pointer. To solve this, I've attempted to defined the BOOST_SHARED_POINTER_EXPORT() macro in this object's definition file. This necessitates including boost/serialization/shared_ptr.hpp. The problem is no matter what position I place this include file in this *.h file, I get the following error. boost/serialization/shared_ptr.hpp:26:2: #error "include <boost/serialization/shared_ptr> first This is a self reference, what is it trying to say? In other words, what do I have to include before boost/serialization/shared_ptr.hpp to make it happy?

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