std::ranges::stride_view<V>::iterator<Const>::operator++,--,+=,-=

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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
stride_view::iterator::operator++
stride_view::iterator::operator++(int)
stride_view::iterator::operator--
stride_view::iterator::operator--(int)
stride_view::iterator::operator+=
stride_view::iterator
Non-member functions
constexpr /*iterator*/ & operator++ ( ) ;
(1) (since C++23)
constexpr void operator++ ( int ) ;
(2) (since C++23)
constexpr /*iterator*/ operator++ ( int )
    requires ranges::forward_range <Base> ;
(3) (since C++23)
constexpr /*iterator*/ & operator-- ( )
    requires ranges::bidirectional_range <Base> ;
(4) (since C++23)
constexpr /*iterator*/ operator-- ( int )
    requires ranges::bidirectional_range <Base> ;
(5) (since C++23)
constexpr /*iterator*/ & operator+ = ( difference_type n )
    requires ranges::random_access_range <Base> ;
(6) (since C++23)
constexpr /*iterator*/ & operator- = ( difference_type n )
    requires ranges::random_access_range <Base> ;
(7) (since C++23)

Increments or decrements the iterator.

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

1) Equivalent to 
missing_ = ranges::advance(current_, stride_, end_);
return *this
Before the call current_ should not be equal to end_
2) Equivalent to ++*this;.
3) Equivalent to auto tmp = *this; ++*this; return tmp;
4) Equivalent to 
ranges::advance(current_, missing_ - stride_);
missing_ = 0;
return *this;
5) Equivalent to auto tmp = *this; --*this; return tmp;
6) Equivalent to 
if (n > 0)
{
    ranges::advance(current_, stride_ * (n - 1));
    missing_ = ranges::advance(current_, stride_, end_);
}
else if (n < 0)
{
    ranges::advance(current_, stride_ * n + missing_);
    missing_ = 0;
}
 
return *this;

If n > 0, then before the call to this function the ranges::distance(current_, end_) must be greater than stride_ * (n - 1)

Note that if n < 0, the ranges::distance(current_, end_) is always greater than (non-positive) stride_ * (n - 1)
7) Equivalent to return *this += -n;

Parameters

n - position relative to current location

Return value

1,4,6,7) *this
2) (none)
3,5) a copy of *this that was made before the change

Example

This section is incomplete
Reason: no example

See also

(C++23)
 performs iterator arithmetic
(function)
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