operator+,-(ranges::adjacent_view::iterator)
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                    < cpp | ranges | adjacent view | iterator
                    
                                                            
                    |   friend constexpr /*iterator*/ operator+( const /*iterator*/& i,                                          difference_type n )  | 
(1) | (since C++23) | 
|   friend constexpr /*iterator*/ operator+( difference_type n,                                          const /*iterator*/& i )  | 
(2) | (since C++23) | 
|   friend constexpr /*iterator*/ operator-( const /*iterator*/& i,                                          difference_type n )  | 
(3) | (since C++23) | 
|   friend constexpr difference_type operator-( const /*iterator*/& i,                                             const /*iterator*/& j )  | 
(4) | (since C++23) | 
Let current_ be the underlying array of iterators, and Base be the type (possibly const-qualified) of underlying view.
1,2) Returns the iterator i incremented by n.
Equivalent to: auto r = i; r += n; return r;.
3) Returns the iterator i decremented by n.
Equivalent to: auto r = i; r -= n; return r;.
4) Returns the distance between i and j.
Equivalent to: return i.current_.back() - j.current_.back();.
These functions are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when adjacent_view::iterator<Const> is an associated class of the arguments.
Parameters
| i, j | - | the iterators | 
| n | - | position relative to current location | 
Return value
1,2) An incremented iterator.
3) A decremented iterator.
4) A distance between given iterators.
Example
| This section is incomplete Reason: no example  | 
See also
|   advances or decrements the underlying iterators  (public member function)  |