Public Member Functions | |
template<typename Rng > | |
constexpr auto | operator() (Rng &&rng) const -> range_reference_t< Rng > requires forward_range< Rng > &&forwarding_range_< Rng > |
constexpr auto ranges::front_fn::operator() | ( | Rng && | rng | ) | const -> range_reference_t<Rng> requires forward_range<Rng> && forwarding_range_<Rng> |
*begin(rng)