C++ 参考手册
- C++11
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- 字符串库
- std::basic_string
- std::basic_string_view
- std::basic_string_view<CharT,Traits>::operator=
- std::basic_string_view<CharT,Traits>::begin, std::basic_string_view<CharT,Traits>::cbegin
- std::basic_string_view<CharT,Traits>::end, std::basic_string_view<CharT,Traits>::cend
- std::basic_string_view<CharT,Traits>::basic_string_view
- std::basic_string_view<CharT,Traits>::copy
- std::hash (std::string_view, std::wstring_view, std::u16string_view, std::u32string_view)
- std::basic_string_view<CharT,Traits>::rbegin, std::basic_string_view<CharT,Traits>::crbegin
- std::basic_string_view<CharT,Traits>::rend, std::basic_string_view<CharT,Traits>::crend
- std::basic_string_view<CharT,Traits>::at
- std::basic_string_view<CharT,Traits>::operator[]
- std::basic_string_view<CharT,Traits>::front
- std::basic_string_view<CharT,Traits>::back
- std::basic_string_view<CharT,Traits>::data
- std::basic_string_view<CharT,Traits>::size, std::basic_string_view<CharT,Traits>::length
- std::basic_string_view<CharT,Traits>::max_size
- std::basic_string_view<CharT,Traits>::empty
- std::basic_string_view<CharT,Traits>::remove_prefix
- std::basic_string_view<CharT,Traits>::remove_suffix
- std::basic_string_view<CharT,Traits>::swap
- std::basic_string_view<CharT,Traits>::substr
- std::basic_string_view<CharT,Traits>::compare
- std::basic_string_view<CharT,Traits>::starts_with
- std::basic_string_view<CharT,Traits>::ends_with
- std::basic_string_view<CharT,Traits>::find
- std::basic_string_view<CharT,Traits>::rfind
- std::basic_string_view<CharT,Traits>::find_first_of
- std::basic_string_view<CharT,Traits>::find_last_of
- std::basic_string_view<CharT,Traits>::find_first_not_of
- std::basic_string_view<CharT,Traits>::find_last_not_of
- std::basic_string_view<CharT,Traits>::npos
- operator==,!=,<,<=,>,>=,<=>(std::basic_string_view)
- operator<<(std::basic_string_view)
- std::literals::string_view_literals::operator""sv
- std::basic_string_view 的推导指引
- 空终止字节字符串
- 空终止多字节字符串
- 空终止宽字符串
- std::char_traits
- 注释
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- 实验性 C++ 特性
- 有用的资源
- 索引
- std 符号索引
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- C++ 关键词
位置:首页 > C++ 参考手册 >字符串库 >std::basic_string_view > std::basic_string_view<CharT,Traits>::begin, std::basic_string_view<CharT,Traits>::cbegin
std::basic_string_view<CharT,Traits>::begin, std::basic_string_view<CharT,Traits>::cbegin
constexpr const_iterator begin() const noexcept; |
(C++17 起) | |
constexpr const_iterator cbegin() const noexcept; |
(C++17 起) | |
返回指向视图首字符的迭代器。
参数
(无)
返回值
指向首字符的 const_iterator
复杂度
常数
示例
运行此代码
#include <iostream> #include <string_view> int main() { std::string_view str_view("abcd"); auto begin = str_view.begin(); auto cbegin = str_view.cbegin(); std::cout << *begin << '\n'; std::cout << *cbegin << '\n'; std::cout << std::boolalpha << (begin == cbegin) << '\n'; std::cout << std::boolalpha << (*begin == *cbegin) << '\n'; }
输出:
a a true true
参阅
返回指向结尾的迭代器 (公开成员函数) |