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operator==,<,>,<=,>=,<=>(ranges::stride_view::iterator)

From cppreference.com
< cpp‎ | ranges‎ | stride view‎ | iterator
 
 
Ranges library
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(C++23)

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(until C++23)(C++23)


 
 
friend constexpr bool operator==( const /*iterator*/& x, std::default_sentinel_t );
(1) (since C++23)
friend constexpr bool operator==( const /*iterator*/& x, const /*iterator*/& y )
  requires std::equality_comparable<ranges::iterator_t<Base>>;
(2) (since C++23)
friend constexpr bool operator<( const /*iterator*/& x, const /*iterator*/& y )
  requires ranges::random_access_range<Base>;
(3) (since C++23)
friend constexpr bool operator>( const /*iterator*/& x, const /*iterator*/& y )
  requires ranges::random_access_range<Base>;
(4) (since C++23)
friend constexpr bool operator<=( const /*iterator*/& x, const /*iterator*/& y )
  requires ranges::random_access_range<Base>;
(5) (since C++23)
friend constexpr bool operator>=( const /*iterator*/& x, const /*iterator*/& y )
  requires ranges::random_access_range<Base>;
(6) (since C++23)
friend constexpr auto operator<=>( const /*iterator*/& x, const /*iterator*/& y )

  requires ranges::random_access_range<Base> and

           std::three_way_comparable<ranges::iterator_t<Base>>;
(7) (since C++23)

Compares the underlying iterators/sentinels.

Let current_ be the underlying iterator, and end_ be the underlying sentinel.

1) Equivalent to return x.current_ == x.end_;.
2) Equivalent to return x.current_ == y.current_;.
3) Equivalent to return x.current_ < y.current_;.
4) Equivalent to return y < x;
5) Equivalent to return !(y < x);
6) Equivalent to return !(x < y);
7) Equivalent to return x.current_ <=> y.current_;.

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

The != operator is synthesized from operator==.

[edit] Parameters

x, y - iterators to compare

[edit] Return value

result of comparison

[edit] Example