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Functor我对图书馆的实施有疑问Loki。我正在做一些更改，以使其与可变参数模板一起使用，而不是使用模板专业化的行和行。问题是我正在尝试将 typedef 用于可变参数模板并且我不明白我的错误，这就是为什么我可以使用专家的帮助...

这是头文件。

我用一个简单的例子对其进行了测试：

static void foo()
{
    std::cout << "foo !!!" << std::endl;
}
int
main( int argc, const char** argv )
{
    Functor<void, void> static_func(foo);
    static_func();
}

这给了我这个错误

/home/test/src/EntryPoint.cpp:237:17: error: no match for call to ‘(Functor<void, void>) ()’
    In file included from /home/test/src/EntryPoint.cpp:231:0:
    /home/test/include/FunctorTest.h:217:7: note: candidate is:
    /home/test/include/FunctorTest.h:292:16: note: Functor<R, TList>::ResultType Functor<R, TList>::operator()(Functor<R, TList>::MyList&&) const [with R = void; TList = {void}; Functor<R, TList>::ResultType = void; Functor<R, TList>::MyList = variadic_typedef<void>]
    /home/test/include/FunctorTest.h:292:16: note:   candidate expects 1 argument, 0 provided
    /home/test/src/EntryPoint.cpp: At global scope:
    /home/test/src/EntryPoint.cpp:234:1: warning: unused parameter ‘argc’ [-Wunused-parameter]
    /home/test/src/EntryPoint.cpp:234:1: warning: unused parameter ‘argv’ [-Wunused-parameter]
    In file included from /home/test/src/EntryPoint.cpp:231:0:
    /home/test/include/FunctorTest.h: In instantiation of ‘FunctorHandler<ParentFunctor, Fun>::ResultType FunctorHandler<ParentFunctor, Fun>::operator()(FunctorHandler<ParentFunctor, Fun>::MyList&&) [with ParentFunctor = Functor<void, void>; Fun = void (*)(); FunctorHandler<ParentFunctor, Fun>::ResultType = void; FunctorHandler<ParentFunctor, Fun>::MyList = variadic_typedef<void>]’:
    /home/test/src/EntryPoint.cpp:247:1:   required from here
    /home/test/include/FunctorTest.h:159:49: error: no matching function for call to ‘forward(FunctorHandler<Functor<void, void>, void (*)()>::MyList&)’
    /home/test/include/FunctorTest.h:159:49: note: candidates are:
    In file included from /usr/include/c++/4.7/bits/stl_pair.h:61:0,
                     from /usr/include/c++/4.7/utility:72,
                     from /home/jean/Lib/vitals/include/CLPair.h:28,
                     from /home/jean/Lib/vitals/include/CLMap.h:27,
                     from /home/jean/Lib/vitals/include/HTCmdLineParser.h:27,
                     from /home/test/include/EntryPoint.h:23,
                     from /home/test/src/EntryPoint.cpp:22:
    /usr/include/c++/4.7/bits/move.h:77:5: note: template<class _Tp> constexpr _Tp&& std::forward(typename std::remove_reference<_From>::type&)
    /usr/include/c++/4.7/bits/move.h:77:5: note:   template argument deduction/substitution failed:
    In file included from /home/test/src/EntryPoint.cpp:231:0:
    /home/test/include/FunctorTest.h:159:49: note:   cannot convert ‘parms’ (type ‘FunctorHandler<Functor<void, void>, void (*)()>::MyList {aka variadic_typedef<void>}’) to type ‘std::remove_reference<convert_in_tuple<variadic_typedef<void> > >::type& {aka convert_in_tuple<variadic_typedef<void> >&}’
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0 回答 0