# operator+,-(ranges::adjacent_transform_view::iterator)

From cppreference.com
< cpp‎ | ranges‎ | adjacent transform view‎ | iterator

friend constexpr /*iterator*/ operator+( const /*iterator*/& i, difference_type n ) requires ranges::random_access_range<Base>; | (1) | (since C++23)
friend constexpr /*iterator*/ operator+( difference_type n, const /*iterator*/& i ) requires ranges::random_access_range<Base>; | (2) | (since C++23)
friend constexpr iterator operator-( const /*iterator*/& i, difference_type n ) requires ranges::random_access_range<Base>; | (3) | (since C++23)
friend constexpr difference_type operator-( const /*iterator*/& i, const /*iterator*/& j ) requires std::sized_sentinel_for</*inner-iterator*/<Const>, /*inner-iterator*/<Const>>; | (4) | (since C++23)

Let `parent_` and `inner_` be the data members of the iterator.

1,2) Equivalent to return /*iterator*/(*i.parent_, i.inner_ + n);.
3) Equivalent to return /*iterator*/(*i.parent_, i.inner_ - n);.
4) Equivalent to return i.inner_ - j.inner_;.

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

### Parameters

i, j | - | the iterators
n | - | a 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

operator++operator++(int)operator--operator--(int)operator+=operator-= (C++23) | advances or decrements the underlying iterators (public member function)

Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/ranges/adjacent_transform_view/iterator/operator_arith2&oldid=151325"