std::experimental::ranges::invoke (3) - Linux Manuals

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

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
        (function template)
(C++17)

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