# operator==,<=>(ranges::zip_transform_view::iterator)

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

friend constexpr bool operator==( const /*iterator*/& x, const /*iterator*/& y ) requires std::equality_comparable</*ziperator*/<Const>>; | (1) | (since C++23)
friend constexpr auto operator<=>( const /*iterator*/& x, const /*iterator*/& y ) requires ranges::random_access_range<Base> && std::three_way_comparable</*ziperator*/<Const>>; | (2) | (since C++23)

Compares the underlying iterators. Let `inner_` denote the underlying iterator.

Equivalent to:

1) return x.inner_ == y.inner_;
2) return x.inner_ <=> y.inner_;

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

The `<`, `<=`, `>`, `>=`, and `!=` operators are synthesized from operator<=> and operator== respectively.

### Parameters

x, y | - | iterators to compare

### Return value

The result of comparison

### See also

operator== (C++23) | compares a sentinel with an iterator returned from `zip_transform_view::begin` (function)

Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/ranges/zip_transform_view/iterator/operator_cmp&oldid=150737"