Range-v3
Range algorithms, views, and actions for the Standard Library
ranges::at_fn Struct Reference

Description

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 >
 

Member Function Documentation

◆ operator()()

template<typename 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>
Returns
begin(rng)[n]