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

From cppreference.com
C++
Ranges library
Range adaptors
std::ranges::transform_view
Member functions
Deduction guides
Iterator
operator== (transform_view:: iterator )
operator< (transform_view:: iterator )
operator> (transform_view:: iterator )
operator<= (transform_view:: iterator )
operator>= (transform_view:: iterator )
operator<=> (transform_view:: iterator )
Sentinel
friend constexpr bool operator == ( const /*iterator*/ & x, const /*iterator*/ & y )
requires std:: equality_comparable < ranges:: iterator_t < Base >> ;
(1) (since C++20)
friend constexpr bool operator < ( const /*iterator*/ & x, const /*iterator*/ & y )
requires ranges:: random_access_range < Base > ;
(2) (since C++20)
friend constexpr bool operator > ( const /*iterator*/ & x, const /*iterator*/ & y )
requires ranges:: random_access_range < Base > ;
(3) (since C++20)
friend constexpr bool operator <= ( const /*iterator*/ & x, const /*iterator*/ & y )
requires ranges:: random_access_range < Base > ;
(4) (since C++20)
friend constexpr bool operator >= ( const /*iterator*/ & x, const /*iterator*/ & y )
requires ranges:: random_access_range < Base > ;
(5) (since C++20)
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++20)

Compares the underlying iterators.

1) Equivalent to return x. current_ == y. current_ ; , where current_ is the underlying iterator.
2) Equivalent to return x. current_ < y. current_ ; , where current_ is the underlying iterator.
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_ ; , where current_ is the underlying iterator.

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

The != operator is synthesized from operator== .

Parameters

x, y - iterators to compare

Return value

result of comparison

See also

(C++20)
compares a sentinel with an iterator returned from transform_view::begin
(function)
Retrieved from " https://en.cppreference.com/mwiki/index.php?title=cpp/ranges/transform_view/iterator/operator_cmp&oldid=172697 "