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std::basic_const_iterator<Iter>:: operator[]

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C++
Iterator library
Iterator concepts
Iterator primitives
Algorithm concepts and utilities
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Common algorithm requirements
(C++20)
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Utilities
(C++20)
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Range access
(C++11) (C++14)
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std::basic_const_iterator
Member functions
basic_const_iterator::operator[]
Non-member functions
(C++23) (C++23) (C++23) (C++23)
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Helper classes
(C++23)
constexpr std:: iter_const_reference_t < Iter > operator [ ] ( difference_type n ) const
requires std:: random_access_iterator < Iterator > ;
(C++23 起)

返回指定相对位置处元素的引用。

目录

参数

n - 相对于当前位置的偏移量

返回值

对相对位置处元素的常引用，即 static_cast < std:: iter_const_reference_t < Iter >> ( base ( ) [ n ] ) 。

示例

本节内容不完整
原因：缺少示例

参见

访问所指向的元素
(公开成员函数)