25 Iterators library [iterators]

25.5 Iterator adaptors [predef.iterators]

25.5.7 Counted iterators [iterators.counted]

25.5.7.7 Customizations [counted.iter.cust]

friend constexpr decltype(auto)
  iter_move(const counted_iterator& i)
    noexcept(noexcept(ranges::iter_move(i.current)))
    requires input_iterator<I>;

Preconditions: i.length > 0 is true.

Effects: Equivalent to: return ranges::iter_move(i.current);

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template<indirectly_swappable<I> I2>
  friend constexpr void
    iter_swap(const counted_iterator& x, const counted_iterator<I2>& y)
      noexcept(noexcept(ranges::iter_swap(x.current, y.current)));

Preconditions: Both x.length > 0 and y.length > 0 are true.

Effects: Equivalent to ranges::iter_swap(x.current, y.current).