std::experimental::ranges::invoke

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

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)

• 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

invokeinvoke_r (C++17)(C++23)

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