operator+(std::basic_const_iterator<Iter>)

friend constexpr basic_const_iterator
    operator+( const basic_const_iterator& i, difference_type n )
  requires std::random_access_iterator<Iter>;

(1)

(since C++23)

friend constexpr basic_const_iterator
    operator+( difference_type n, const basic_const_iterator& i )
  requires std::random_access_iterator<Iter>;

(2)

(since C++23)

Returns the iterator i incremented by n.

These functions are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when std::basic_const_iterator<Iter> is an associated class of the arguments..

i	-	the iterator adaptor to increment
n	-	the number of positions to increment the iterator

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