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 underlying inner_ iterator.

Equivalent to:

1) ++inner_; return *this;
2) ++*this;
3) auto tmp = *this; ++*this; return tmp;
4) --inner_; return *this;
5) auto tmp = *this; --*this; return tmp;
6) inner_ += n; return *this;
7) inner_ -= n; return *this;

Base is exposition-only member-type of the iterator class template.


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


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