ranges::views::keys_fn Struct Reference

Synopsis of methods
constexpr view_closure< keys_fn >	keys {}

Public Member Functions
template<typename Rng >
auto	operator() (Rng &&rng) const -> keys_range_view< all_t< Rng >> requires viewable_range< Rng > &&input_range< Rng > &&detail::kv_pair_like_< range_reference_t< Rng >>