NAME¶

std::experimental::ranges::projected - std::experimental::ranges::projected

Synopsis¶

Defined in header <experimental/ranges/iterator> template< Readable I, IndirectRegularUnaryInvocable<I> Proj >

struct projected {
using value_type =

std::remove_cv_t<std::remove_reference_t<ranges::indirect_result_of_t<Proj&(I)>>>;
ranges::indirect_result_of_t<Proj&(I)> operator*() const; (ranges }; TS)

template< WeaklyIncrementable I, class Proj > struct difference_type<projected<I, Proj>> {
using type = ranges::difference_type_t<I>;

};

The class template projected bundles a Readable type I and a function Proj into a
new Readable type whose reference type is the result of applying Proj to the
reference type of I. It exists solely to ease constraint specification, and so its
operator*() may not be actually defined.