NAME¶

std::ranges::slide_view::iterator::operator++,--,+=,-= - std::ranges::slide_view::iterator::operator++,--,+=,-=

Synopsis¶

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

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¶

This section is incomplete
Reason: no example

See also¶

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

Category:¶

* Todo no example