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

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

Compares the underlying iterators.

Let current_ and last_ele_ be the underlying iterators to the begin and end of the sliding window, respectively.

1) Equivalent to:
  • return x.last_ele_ == y.last_ele_;, if last_ele_ is present. Otherwise,
  • return x.current_ == y.current_;.
2) Equivalent to return x.current_ < y.current_;.
3) Equivalent to return y < x;.
4) Equivalent to return !(y < x);.
5) Equivalent to return !(x < y);.
6) 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::slide_view::iterator<Const> is an associated class of the arguments.

The != operator is synthesized from operator==.

Parameters

x, y - iterators to compare

Return value

The result of comparison.

Example

See also

(C++23)
compares a sentinel with an iterator returned from slide_view::begin
(function)

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