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

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< cpp‎ | ranges‎ | stride view‎ | iterator
C++
Ranges library
Range adaptors
std::ranges::stride_view
Member functions
Deduction guides
Iterator
Member functions
Non-member functions
operator+(stride_view::iterator)
operator-(stride_view::iterator)
friend constexpr /*iterator*/

operator+( const /*iterator*/& i, difference_type n )

        requires ranges::random_access_range <Base> ;
(1) (since C++23)
friend constexpr /*iterator*/

operator+( difference_type n, const /*iterator*/& i )

        requires ranges::random_access_range <Base> ;
(2) (since C++23)
friend constexpr /*iterator*/

operator-( const /*iterator*/& i, difference_type n )

        requires ranges::random_access_range <Base> ;
(3) (since C++23)
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++23)
friend constexpr difference_type

operator- ( std::default_sentinel_t, const /*iterator*/ & x )
        requires std::sized_sentinel_for < ranges::sentinel_t <Base>,

ranges::iterator_t <Base>> ;
(5) (since C++23)
friend constexpr difference_type

operator- ( const /*iterator*/ & x, std::default_sentinel_t s )
        requires std::sized_sentinel_for < ranges::sentinel_t <Base>,

ranges::iterator_t <Base>> ;
(6) (since C++23)

Increments or decrements the iterator.

Let current_, end_, stride_, and missing_ be the data members of the iterator

1,2) Equivalent to auto r = i; r + = n; return r;
3) Equivalent to auto r = i; r - = n; return r;
4) Let N be x.current_ - y.current_. Returns:
  • (N + x.missing_ - y.missing_ ) / x.stride_ , if Base models forward_range
  • -/*div-ceil*/(-N, x.stride_) , if N < 0
  • /*div-ceil*/(N, x.stride_) otherwise.
5) Equivalent to return /*div-ceil*/ (x.end_ - x.current_, x.stride_ ) ;
6) Equivalent to return -(s - x);

These functions are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when stride_view::iterator<Const>

Parameters

x, y, i - the iterators
s - a sentinel

Return value

1,2) An incremented iterator
3) A decremented iterator
4) A distance between given iterators
5,6) A distance between given iterator and sentinel

Example

This section is incomplete
Reason: no example

See also

 advances or decrements the underlying iterator
(public member function)
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