Checked indexed range access.
Public Member Functions | |
template<typename Rng > | |
constexpr auto | operator() (Rng &&rng, range_difference_t< Rng > n) const -> range_reference_t< Rng > requires random_access_range< Rng > &&sized_range< Rng > &&forwarding_range_< Rng > |
constexpr auto ranges::at_fn::operator() | ( | Rng && | rng, |
range_difference_t< Rng > | n | ||
) | const -> range_reference_t<Rng> requires random_access_range<Rng> && sized_range<Rng> && forwarding_range_<Rng> |
begin(rng)[n]