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std::experimental::ranges::invoke(3) C++ Standard Libary std::experimental::ranges::invoke(3)

NAME

std::experimental::ranges::invoke - std::experimental::ranges::invoke

Synopsis


Defined in header <experimental/ranges/functional>
template< class F, class... Args > (ranges TS)
std::result_of_t<F&&(Args&&...)> invoke( F&& f, Args&&... args );


Invoke the Callable object f with the parameters args, and return the result, as if
by return INVOKE(std::forward<F>(f), std::forward<Args>(args)...);, where INVOKE(f,
t1, t2, ..., tN) is defined as follows:


* if f is a pointer to member function of class T:


* If std::is_base_of<T, std::decay_t<decltype(t1)>>::value is true, then INVOKE(f,
t1, t2, ..., tN) is equivalent to (t1.*f)(t2, ..., tN),
* otherwise, INVOKE(f, t1, t2, ..., tN) is equivalent to ((*t1).*f)(t2, ..., tN).
* otherwise, if N == 1 and f is a pointer to data member of class T:


* If std::is_base_of<T, std::decay_t<decltype(t1)>>::value is true, then INVOKE(f,
t1) is equivalent to t1.*f,
* otherwise, then INVOKE(f, t1) is equivalent to (*t1).*f.
* otherwise, INVOKE(f, t1, t2, ..., tN) is equivalent to f(t1, t2, ..., tN) (that
is, f is a FunctionObject).

Parameters


f - Callable object to be invoked
args - arguments to pass to f

See also


invoke invokes any Callable object with given arguments
invoke_r and possibility to specify return type
(C++17) (since C++23)
(C++23) (function template)

2024.06.10 http://cppreference.com