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std::bad_function_call

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Defined in header <functional>
class bad_function_call;
(a partir do C++ 11)

std::bad_function_call is the type of the exception thrown by std::function::operator() if the function wrapper has no target.

cpp/error/exceptionstd-bad function call-inheritance.svg
Sobre esta imagem

Inheritance diagram

Índice

[editar] Funções de membro

(constructor)
bad_function_call()
(função pública membro)

std::bad_function_call::bad_function_call()

bad_function_call();

Constructs a new instance of std::bad_function_call.

Parameters

(none)

Exceptions

noexcept specification:  
noexcept
  (a partir do C++ 11)

Inherited from std::exception

Member functions

[virtual]
destrói o objeto de exceção
Original:
destructs the exception object
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(of std::exception função pública virtual membro) [edit]
[virtual]
retorna uma cadeia explicativa
Original:
returns an explanatory string
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(of std::exception função pública virtual membro) [edit]

[editar] Exemplo

#include <iostream>
#include <functional>
 
int main()
{
    std::function<int()> f = nullptr;
    try {
        f();
    } catch(const std::bad_function_call& e) {
        std::cout << e.what() << '\n';
    }
}

Output:

bad function call

[editar] Veja também

(C++11)
envolve objeto que pode ser chamado de qualquer tipo com a assinatura especificada função chamada
Original:
wraps callable object of any type with specified function call signature
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(modelo de classe) [edit]