ranges::views::cache1_fn Struct Reference

Inheritance diagram for ranges::views::cache1_fn:

Public Member Functions
template<typename Rng > requires viewable_range<Rng> && input_range<Rng> && constructible_from<range_value_t<Rng>, range_reference_t<Rng>>
constexpr cache1_view< all_t< Rng > >	operator() (Rng &&rng) const
	Caches the most recent element within the view so that dereferencing the view's iterator multiple times doesn't incur any recomputation. This can be useful in adaptor pipelines that include combinations of view::filter and view::transform, for instance. More...

Related Functions
(Note that these are not member functions.)
constexpr view_closure< cache1_fn >	cache1 {}

Member Function Documentation

operator()()

template<typename Rng >
requires viewable_range<Rng> && input_range<Rng> && constructible_from<range_value_t<Rng>, range_reference_t<Rng>>

constexpr cache1_view< all_t< Rng > > ranges::views::cache1_fn::operator() ( Rng &&  rng ) const

constexpr

Caches the most recent element within the view so that dereferencing the view's iterator multiple times doesn't incur any recomputation. This can be useful in adaptor pipelines that include combinations of view::filter and view::transform, for instance.

Note

views::cache1 is always single-pass.