| Defined in header <functional> | ||||
|---|---|---|---|---|
| (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()
|
Constructs a new instance of std::bad_function_call.
Parameters
(none).
Exceptions
noexcept specification: noexceptInherited from std::exception
Member functions
| (destructor)
[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
1 2 3 4 5 6 7 8 9 10 11 12 | #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:
1 | bad function call |
See also
| (C++11) | wraps callable object of any type with specified function call signature (class template) |
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