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      std::result_of

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      <metanoindex/>

       
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      <tbody> </tbody>
      Definido no cabeçalho <type_traits>
      template< class > class result_of; //not defined
      		 (1) (desde C++11)
      template< class F, class... ArgTypes > class result_of<F(ArgTypes...)>;
      		 (2) (desde C++11)
      Deduz o tipo de retorno de uma expressão chamada de função em tempo de compilação.
      Original:
      Deduces the return type of a function call expression at compile time.
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      Tipos de membro

      Tipo de membro
      Original:
      Member type
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      		 Definition
      type
      o tipo de retorno da função se F chamado com o ArgTypes... argumentos
      Original:
      the return type of the function F if called with the arguments ArgTypes...
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      Possível implementação

      template<class>
struct result_of;

template<class F, class... ArgTypes>
struct result_of<F(ArgTypes...)>
{
    typedef decltype(
                     std::declval<F>()(std::declval<ArgTypes>()...)
                    ) type;
};

      Exemplo

      struct S {
    double operator()(char, int&);
};

int main()
{
    std::result_of<S(char, int&)>::type f = 3.14; // f has type double
}


      Veja também

      (C++11)
      obtém o tipo de expressão em contexto não avaliada
      Original:
      obtains the type of expression in unevaluated context
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      (modelo de função) [edit]