operator+,- (ranges::transform_view:: iterator )

friend constexpr /*iterator*/ operator + ( /*iterator*/ i, difference_type n ) requires ranges:: random_access_range < Base > ;	(1)	(since C++20)
friend constexpr /*iterator*/ operator + ( difference_type n, /*iterator*/ i ) requires ranges:: random_access_range < Base > ;	(2)	(since C++20)
friend constexpr /*iterator*/ operator - ( /*iterator*/ i, difference_type n ) requires ranges:: random_access_range < Base > ;	(3)	(since C++20)
friend constexpr difference_type operator - ( const /*iterator*/ & x, const /*iterator*/ & y ) requires std:: sized_sentinel_for < ranges:: iterator_t < Base > , ranges:: iterator_t < Base >> ;	(4)	(since C++20)

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

Parameters

i, x, y	-	the iterators.
n	-	position relative to current location.

Return value

Let parent_ denote the pointer to the parent transform_view , current_ denote the underlying iterator.

Example

This section is incomplete Reason: no example

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR	Applied to	Behavior as published	Correct behavior
LWG 3483	C++20	transform_view::iterator 's difference is overconstrained	requirement is relaxed