std::ranges::zip_transform_view<F,Views...>::iterator<Const>::operator++,--,+=,-=

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)

Увеличивает или уменьшает итератор.

Пусть inner_ является базовым итератором, а Base — вспомогательный тип.

Эквивалентно:

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;

смещение относительно текущей позиции

1,4,6,7) *this

2) (ничего)

3,5) копия значения *this до изменения

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