Calculer la moyenne et le moment dans la bibliothèque Boost

Question

J'essaie d'implémenter un programme qui calcule la moyenne et le moment en utilisant les accumulator de la bibliothèque Boost. Voici le code:

#include <iostream> 

#include <boost/accumulators/accumulators.hpp> 
#include <boost/accumulators/statistics/mean.hpp> 
#include <boost/accumulators/statistics/moment.hpp> 
using namespace boost::accumulators; 

int main() 
{ 
    accumulator_set<double,stats<tag::mean,tag::moment<2> > >acc; 
    //push in some data 
    acc(1.2); 
    acc(2.3); 
    acc(3.4); 
    acc(4.5); 
    std::cout<<"Mean : "<<mean(acc)<<std::endl; 
    std::cout<<"moment : "<<accumulators::moment<2>(acc)<<std::endl; 

    return 0; 
} 

Mais j'obtiens une longue liste d'erreurs (listée ci-dessous). Au lieu des accumulateurs j'ai essayé boost::accumulator parce qu'à la ligne où j'utilise le programme d'accumulateur il me montre une ligne rouge et après utilisation de boost::accumulator une ligne rouge était cachée mais les erreurs sont les mêmes. Comment puis-je résoudre ce problème?

1>------ Build started: Project: examples, Configuration: Debug Win32 ------ 
1>Build started 8/20/2010 11:41:31 PM. 
1>InitializeBuildStatus: 
1> Touching "Debug\examples.unsuccessfulbuild". 
1>ClCompile: 
1> examples.cpp 
1> using native typeof 
1>c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(36): error C2027: use of undefined type 'boost::fusion::void_' 
1>   c:\users\david\desktop\boost_1_44_0\boost\fusion\container\vector\vector_fwd.hpp(16) : see declaration of 'boost::fusion::void_' 
1>   c:\users\david\desktop\boost_1_44_0\boost\mpl\eval_if.hpp(41) : see reference to class template instantiation 'boost::accumulators::detail::accumulator_set_result<AccumulatorSet,Feature>' being compiled 
1>   with 
1>   [ 
1>    AccumulatorSet=boost::accumulators::accumulator_set<double,boost::accumulators::stats<boost::accumulators::tag::mean,boost::accumulators::tag::moment<2>>>, 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(57) : see reference to class template instantiation 'boost::mpl::eval_if<C,F1,F2>' being compiled 
1>   with 
1>   [ 
1>    C=boost::accumulators::detail::is_accumulator_set<boost::accumulators::accumulator_set<double,boost::accumulators::stats<boost::accumulators::tag::mean,boost::accumulators::tag::moment<2>>>>, 
1>    F1=boost::accumulators::detail::accumulator_set_result<boost::accumulators::accumulator_set<double,boost::accumulators::stats<boost::accumulators::tag::mean,boost::accumulators::tag::moment<2>>>,boost::accumulators::tag::mean>, 
1>    F2=boost::accumulators::detail::argument_pack_result<boost::accumulators::accumulator_set<double,boost::accumulators::stats<boost::accumulators::tag::mean,boost::accumulators::tag::moment<2>>>,boost::accumulators::tag::mean> 
1>   ] 
1>   c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17) : see reference to class template instantiation 'boost::accumulators::detail::extractor_result<A,Feature>' being compiled 
1>   with 
1>   [ 
1>    A=boost::accumulators::accumulator_set<double,boost::accumulators::stats<boost::accumulators::tag::mean,boost::accumulators::tag::moment<2>>>, 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(36): error C2146: syntax error : missing ';' before identifier 'type' 
1>c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(36): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 
1>c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(36): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2893: Failed to specialize function template 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const Arg1 &) const' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   With the following template arguments: 
1>   'boost::accumulators::accumulator_set<Sample,Features>' 
1>   with 
1>   [ 
1>    Sample=double, 
1>    Features=boost::accumulators::stats<boost::accumulators::tag::mean,boost::accumulators::tag::moment<2>> 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A1 &) const' : expects 2 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(112) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &) const' : expects 3 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &,const A2 &) const' : expects 4 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &,const A2 &,const A3 &) const' : expects 5 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &,const A2 &,const A3 &,const A4 &) const' : expects 6 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &,const A2 &,const A3 &,const A4 &,const A5 &) const' : expects 7 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &,const A2 &,const A3 &,const A4 &,const A5 &,const A6 &) const' : expects 8 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &,const A2 &,const A3 &,const A4 &,const A5 &,const A6 &,const A7 &) const' : expects 9 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &,const A2 &,const A3 &,const A4 &,const A5 &,const A6 &,const A7 &,const A8 &) const' : expects 10 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &,const A2 &,const A3 &,const A4 &,const A5 &,const A6 &,const A7 &,const A8 &,const A9 &) const' : expects 11 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &,const A2 &,const A3 &,const A4 &,const A5 &,const A6 &,const A7 &,const A8 &,const A9 &,const A10 &) const' : expects 12 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &,const A2 &,const A3 &,const A4 &,const A5 &,const A6 &,const A7 &,const A8 &,const A9 &,const A10 &,const A11 &) const' : expects 13 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &,const A2 &,const A3 &,const A4 &,const A5 &,const A6 &,const A7 &,const A8 &,const A9 &,const A10 &,const A11 &,const A12 &) const' : expects 14 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &,const A2 &,const A3 &,const A4 &,const A5 &,const A6 &,const A7 &,const A8 &,const A9 &,const A10 &,const A11 &,const A12 &,const A13 &) const' : expects 15 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(17): error C2780: 'detail::extractor_result<Arg1,Feature>::type boost::accumulators::extractor<Feature>::operator()(const AccumulatorSet &,const A0 &,const A1 &,const A2 &,const A3 &,const A4 &,const A5 &,const A6 &,const A7 &,const A8 &,const A9 &,const A10 &,const A11 &,const A12 &,const A13 &,const A14 &) const' : expects 16 arguments - 1 provided 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>   c:\users\david\desktop\boost_1_44_0\boost\accumulators\framework\extractor.hpp(148) : see declaration of 'boost::accumulators::extractor<Feature>::operator()' 
1>   with 
1>   [ 
1>    Feature=boost::accumulators::tag::mean 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(18): error C2653: 'accumulators' : is not a class or namespace name 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(18): error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'overloaded-function' (or there is no acceptable conversion) 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(679): could be 'std::basic_ostream<_Elem,_Traits> &std::operator <<<char,std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,const char *)' [found using argument-dependent lookup] 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(726): or  'std::basic_ostream<_Elem,_Traits> &std::operator <<<char,std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,char)' [found using argument-dependent lookup] 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(764): or  'std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,const char *)' [found using argument-dependent lookup] 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(811): or  'std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,char)' [found using argument-dependent lookup] 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(937): or  'std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,const signed char *)' [found using argument-dependent lookup] 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(944): or  'std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,signed char)' [found using argument-dependent lookup] 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(951): or  'std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,const unsigned char *)' [found using argument-dependent lookup] 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(958): or  'std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,unsigned char)' [found using argument-dependent lookup] 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(1085): or  'std::basic_ostream<_Elem,_Traits> &std::operator <<<char,std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,const std::error_code &)' [found using argument-dependent lookup] 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(186): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::basic_ostream<_Elem,_Traits> &(__cdecl *)(std::basic_ostream<_Elem,_Traits> &))' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(192): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::basic_ios<_Elem,_Traits> &(__cdecl *)(std::basic_ios<_Elem,_Traits> &))' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(199): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::ios_base &(__cdecl *)(std::ios_base &))' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(206): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::_Bool)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(226): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(short)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(260): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(unsigned short)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(280): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(int)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(305): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(unsigned int)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(325): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(long)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(345): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(unsigned long)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(366): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(__int64)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(386): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(unsigned __int64)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(407): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(float)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(427): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(double)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(447): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(long double)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(467): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(const void *)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   c:\program files\microsoft visual studio 10.0\vc\include\ostream(487): or  'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::basic_streambuf<_Elem,_Traits> *)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>   while trying to match the argument list '(std::basic_ostream<_Elem,_Traits>, overloaded-function)' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char> 
1>   ] 
1>c:\users\david\documents\visual studio 2010\projects\examples\examples\examples.cpp(18): error C2676: binary '<<' : 'boost::accumulators::accumulator_set<Sample,Features>' does not define this operator or a conversion to a type acceptable to the predefined operator 
1>   with 
1>   [ 
1>    Sample=double, 
1>    Features=boost::accumulators::stats<boost::accumulators::tag::mean,boost::accumulators::tag::moment<2>> 
1>   ] 
1> 
1>Build FAILED. 
1> 
1>Time Elapsed 00:00:07.38 
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== 

Answer 1

Vous devez probablement

#include <boost/accumulators/statistics/stats.hpp> 

Cependant, la construction du même exemple sur Mac OS X et d'obtenir l'erreur suivante:

**** Build of configuration Debug for project Accumulators **** 

make all 
Building file: ../src/Accumulators.cpp 
Invoking: GCC C++ Compiler 
g++ -I/opt/local/include -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/Accumulators.d" -MT"src/Accumulators.d" -o"src/Accumulators.o" "../src/Accumulators.cpp" 
../src/Accumulators.cpp: In function 'int main()': 
../src/Accumulators.cpp:22: error: 'accumulators' has not been declared 
../src/Accumulators.cpp:22: error: no match for 'operator<<' in 'acc << std::endl' 
make: *** [src/Accumulators.o] Error 1 

Alors j'ai changé accumulators::moment<2>(acc) juste moment<2>(acc) et construire D'accord. Code ressemble ci-dessous:

#include <iostream> 
#include <boost/accumulators/accumulators.hpp> 
#include <boost/accumulators/statistics/stats.hpp> 
#include <boost/accumulators/statistics/mean.hpp> 
#include <boost/accumulators/statistics/moment.hpp> 
using namespace boost::accumulators; 

int main() 
{ 
    // Define an accumulator set for calculating the mean and the 
    // 2nd moment ... 
    accumulator_set<double, stats<tag::mean, tag::moment<2> > > acc; 

    // push in some data ... 
    acc(1.2); 
    acc(2.3); 
    acc(3.4); 
    acc(4.5); 

    // Display the results ... 
    std::cout << "Mean: " << mean(acc) << std::endl; 
    std::cout << "Moment: " << moment<2>(acc) << std::endl; 

    return 0; 
} 

Answer 2

Outre les en-têtes déjà inclus, vous devez également ajouter:

#include <boost/accumulators/statistics/moment.hpp> 

Ensuite, en plus de l'espace de noms Accumulateurs, ajoutez également l'espace de noms Boost:

using namespace boost; 

Et ensuite compiler avec:

g++ acc.cpp -o acc -I/usr/local/include/boost/ -L/usr/local/lib/