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

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C++
Ranges library
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std::ranges::cartesian_product_view
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Iterator
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Non-member functions
operator== (cartesian_product_view:: iterator )
operator<=> (cartesian_product_view:: iterator )
friend constexpr bool operator == ( const /*iterator*/ & x, const /*iterator*/ & y )
requires std:: equality_comparable < ranges:: iterator_t < /*maybe-const*/ < Const, First >>> ;
(1) (since C++23)
friend constexpr bool operator == ( const /*iterator*/ & x, std:: default_sentinel_t ) ;
(2) (since C++23)
friend constexpr auto operator <=> ( const /*iterator*/ & x, const /*iterator*/ & y )
requires /*all-random-access*/ < Const, First, Vs... > ;
(2) (since C++23)

Compares two iterators or an iterator and a sentinel.

Let current_ denote the underlying tuple of iterators.

1) Equivalent to: return x. current_ == y. current_ ;
2) Returns true if std :: get < i > ( x. current_ ) == ranges:: end ( std :: get < i > ( x. parent_ - > bases_ ) ) is true for any integer 0 ≤ i ≤ sizeof... ( Vs ) . Otherwise, returns false .
3) 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::cartesian_product_view:: iterator <Const> is an associated class of the arguments.

The != operator is synthesized from operator== .

Contents

Parameters

x, y - iterators or sentinels to compare

Return value

The result of comparison.

Example

This section is incomplete
Reason: no example

See also

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