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/C++std::bad_function_call
| Defined in header
<functional> | ||
|---|---|---|
class bad_function_call; | (since 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.
Member functions
| (constructor) | bad_function_call() (public member function) |
std::bad_function_call::bad_function_call()
bad_function_call(); |
Constructs a new instance of std::bad_function_call.
Parameters
(none).
Exceptions
noexcept specification: noexceptInherited from std::exception
Member functions
| [virtual]
| destructs the exception object (virtual public member function of std::exception) |
| [virtual]
| returns an explanatory string (virtual public member function of std::exception) |
Example
#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
See also
| (C++11)
| wraps callable object of any type with specified function call signature (class template) |
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