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