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

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

Advances or decrements the iterator.

Let current_ and last_ele_ be the underlying iterators to the begin and end of the sliding window.

1) Equivalent to:
current_ = ranges::next(current_);
last_ele_ = ranges::next(last_ele_); // if last_ele_ is present
return *this;
Before the invocation, the current_ and last_ele_ (if present) must be incrementable.
2) Equivalent to: auto tmp = *this; ++*this; return tmp;
3) Equivalent to:
current_ = ranges::prev(current_);
last_ele_ = ranges::prev(last_ele_); // if last_ele_ is present
return *this;
Before the invocation, the current_ and last_ele_ (if present) must be decrementable.
4) Equivalent to: auto tmp = *this; --*this; return tmp;
5) Equivalent to:
current_ = current_ + n;
last_ele_ = last_ele_ + n; // if last_ele_ is present
return *this;
Before the invocation, the expressions current_ + n and last_ele_ + n (if last_ele_ is present) must have well-defined behavior.
6) Equivalent to:
current_ = current_ - n;
last_ele_ = last_ele_ - n; // if last_ele_ is present
return *this;
Before the invocation, the expressions current_ - n and last_ele_ - n (if last_ele_ is present) must have well-defined behavior.

Parameters

n - position relative to current location

Return value

1,3,5,6) *this
2,4) a copy of *this that was made before the change

Example

See also

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

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