W3cubDocs
/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) | constructs the bad_function_call object (public member function) |
std::bad_function_call::bad_function_call()
bad_function_call() noexcept; |
Constructs a new instance of std::bad_function_call.
Parameters
(none).
Inherited from std::exception
Member functions
|
[virtual] | destroys 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';
}
}Possible output:
bad function call
See also
|
(C++11) | wraps callable object of any type with specified function call signature (class template) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/cpp/utility/functional/bad_function_call