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std::bad_function_call

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Funzione oggetti
initializer_list(C++11)
bitset
hash(C++11)
Gli operatori relazionali
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Relational operators
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Funzione oggetti
Funzione wrapper
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Function wrappers
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function(C++11)
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bad_function_call(C++11)
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Sconsigliata a leganti e adattatori
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Defined in header <functional>
class bad_function_call;
(dal 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
Informazioni sull'immagine

Inheritance diagram

Indice

[modifica] Membri funzioni

(constructor)
bad_function_call()
(membro pubblico funzione)

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
  (dal C++11)

Inherited from std::exception

Member functions

[virtuale]
distrugge l'oggetto eccezione
Original:
destructs the exception object
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(pubblico virtuale membro of std::exception funzione) [edit]
[virtuale]
restituisce una stringa esplicativa
Original:
returns an explanatory string
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(pubblico virtuale membro of std::exception funzione) [edit]

[modifica] Esempio

#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

[modifica] Vedi anche

(C++11)
avvolge oggetto invocabile di qualsiasi tipo con la firma specificato chiamata di funzione
Original:
wraps callable object of any type with specified function call signature
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(classe template) [edit]