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operator+, operator- (std::basic_const_iterator)

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Iterator library
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std::basic_const_iterator
Member functions
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(C++23) (C++23) (C++23) (C++23)
operator+
(C++23)
(C++23)
(C++23)
Helper classes
(C++23)
friend constexpr basic_const_iterator

operator + ( const basic_const_iterator & i, difference_type n )

requires std:: random_access_iterator < Iter > ;
(1) (C++23 起)
friend constexpr basic_const_iterator

operator + ( difference_type n, const basic_const_iterator & i )

requires std:: random_access_iterator < Iter > ;
(2) (C++23 起)
friend constexpr basic_const_iterator

operator - ( const basic_const_iterator & i, difference_type n )

requires std:: random_access_iterator < Iter > ;
(3) (C++23 起)

返回迭代器 i 增加或减少 n 后的结果。

1,2) 返回一个迭代器，该迭代器已前进 n 个位置。
3) 返回一个迭代器，该迭代器向前移动了 - n 个位置。

这些函数对普通的 非限定查找 或 限定查找 不可见，仅当 std:: basic_const_iterator < Iter > 作为参数的关联类时，才能通过 实参依赖查找 找到。

返回值

1,2) basic_const_iterator ( i. base ( ) + n )
3) basic_const_iterator ( i. base ( ) - n )

示例

本节内容不完整
原因：缺少示例