Namespaces
Variants

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

From cppreference.net
C++
Ranges library
Range adaptors
std::ranges::elements_view
Member functions
(C++26)
Nested classes
Iterator
elements_view:: iterator ::operator++
elements_view:: iterator ::operator++ (int)
elements_view:: iterator ::operator--
elements_view:: iterator ::operator-- (int)
elements_view:: iterator ::operator+=
elements_view:: iterator ::operator-=
Sentinel
constexpr /*iterator*/ & operator ++ ( ) ;
(1) (C++20 起)
constexpr void operator ++ ( int ) ;
(2) (C++20 起)
constexpr /*iterator*/ operator ++ ( int )
requires ranges:: forward_range < Base > ;
(3) (C++20 起)
constexpr /*iterator*/ & operator -- ( )
requires ranges:: bidirectional_range < Base > ;
(4) (C++20 起)
constexpr /*iterator*/ operator -- ( int )
requires ranges:: bidirectional_range < Base > ;
(5) (C++20 起)
constexpr /*iterator*/ & operator + = ( difference_type n )
requires ranges:: random_access_range < Base > ;
(6) (C++20 起)
constexpr /*iterator*/ & operator - = ( difference_type n )
requires ranges:: random_access_range < Base > ;
(7) (C++20 起)

递增或递减迭代器。

令 current_ 为底层迭代器。

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

参数

n - 相对于当前位置的偏移量

返回值

1,4,6,7) * this
2) (无)
3,5) 在更改前创建的 * this 副本