Difference between revisions of "cpp/utility/functional/bad function call"
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< cpp | utility | functional
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Revision as of 08:13, 19 December 2016
| Defined in header <functional>
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| 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
Contents |
Member functions
| (constructor) |
bad_function_call() (public member function) |
std::bad_function_call::bad_function_call()
| bad_function_call(); |
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Constructs a new instance of std::bad_function_call.
Parameters
(none)
Exceptions
noexcept specification:
noexcept
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)
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Example
Run this code
#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) |
copyable wrapper of any copy constructible callable object (class template) |
