std::_Maybe_unary_or_binary_function< _Res, _ArgTypes >

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libstdc++                                        Tue Jul 1std::_Maybe_unary_or_b...tion<_Res,_ArgTypes>(3cxx)

template<typename_Res,typename..._ArgTypes>
       struct std::_Maybe_unary_or_binary_function< _Res, _ArgTypes >" Derives from unary_function or
       binary_function, or perhaps nothing, depending on the number of arguments provided. The primary template
       is the basis case, which derives nothing.

       Definition at line 53 of file refwrap.h.

       std::_Maybe_unary_or_binary_function< _Res, _ArgTypes >