std::copyable_function::operator bool - cppreference.com (original) (raw)

| explicit operator bool() const noexcept; | | (since C++26) | | ---------------------------------------- | | ------------- |

Checks whether *this stores a callable target, i.e. is not empty.

[edit] Parameters

(none)

[edit] Return value

true if *this stores a callable target, false otherwise.

[edit] Example

[edit] See also

| | compares a std::copyable_function with nullptr (function) [edit] | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | | checks if a target is contained (public member function of std::function<R(Args...)>) [edit] | | | checks if the std::move_only_function has a target (public member function of std::move_only_function) [edit] |