std::bad_function_call - cppreference.com

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Definido no cabeçalho `<functional>`

`class bad_function_call;`		(desde C++11)

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

Inheritance diagram

Funções de membro


	bad_function_call() (função pública membro)

std::bad_function_call::bad_function_call()

Constructs a new instance of std::bad_function_call.

Parameters

(none)

Exceptions

Herdado de std::exception

Member functions


	destrói o objeto de exceção Original: destructs the exception object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (of `std::exception` função pública virtual membro) [edit]

	retorna uma cadeia explicativa Original: returns an explanatory string The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (of `std::exception` função pública virtual membro) [edit]

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';
    }
}

Saída:

Veja também


	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 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de classe) [edit]