实验性库头文件 <experimental/string_view>

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< cpp‎ | header‎ | experimental
 
 
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实验性库头文件
文件系统 TS
<experimental/filesystem>
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<experimental/coroutine>
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<experimental/reflect>
 

此头文件是库基础 TS (v1, v2) 的一部分。

名字 说明
std::experimental::basic_string_view (库基础 TS) 表示到某个字符串的引用的类模板 (类模板)
std::experimental::string_view (库基础 TS) std::experimental::basic_string_view<char> (typedef)
std::experimental::wstring_view (库基础 TS) std::experimental::basic_string_view<wchar_t> (typedef)
std::experimental::u16string_view (库基础 TS) std::experimental::basic_string_view<char16_t> (typedef)
std::experimental::u32string_view (库基础 TS) std::experimental::basic_string_view<char32_t> (typedef)
std::hash<std::experimental::string_view> (库基础 TS) (类模板特化)
std::hash<std::experimental::u16string_view> (库基础 TS) (类模板特化)
std::hash<std::experimental::u32string_view> (库基础 TS) (类模板特化)
std::hash<std::experimental::wstring_view> (库基础 TS) (类模板特化)

函数

以字典序比较两个视图
(函数模板)
输出
进行视图的流输出
(函数模板)

概要

namespace std {
  namespace experimental {
  inline namespace fundamentals_v1 {
 
    // 7.2,类模板 basic_string_view
    template<class charT, class traits = char_traits<charT>>
        class basic_string_view;
 
    // 7.9,basic_string_view 的非成员比较函数
    template<class charT, class traits>
    constexpr bool operator==(basic_string_view<charT, traits> x,
                              basic_string_view<charT, traits> y) noexcept;
    template<class charT, class traits>
    constexpr bool operator!=(basic_string_view<charT, traits> x,
                              basic_string_view<charT, traits> y) noexcept;
    template<class charT, class traits>
    constexpr bool operator< (basic_string_view<charT, traits> x,
                                 basic_string_view<charT, traits> y) noexcept;
    template<class charT, class traits>
    constexpr bool operator> (basic_string_view<charT, traits> x,
                              basic_string_view<charT, traits> y) noexcept;
    template<class charT, class traits>
    constexpr bool operator<=(basic_string_view<charT, traits> x,
                                 basic_string_view<charT, traits> y) noexcept;
    template<class charT, class traits>
    constexpr bool operator>=(basic_string_view<charT, traits> x,
                              basic_string_view<charT, traits> y) noexcept;
    // 见下文,充足的比较函数的额外重载 
 
    // 7.10,插入符与提取符
    template<class charT, class traits>
      basic_ostream<charT, traits>&
        operator<<(basic_ostream<charT, traits>& os,
                   basic_string_view<charT, traits> str);
 
    // basic_string_view typedef 名
    typedef basic_string_view<char> string_view;
    typedef basic_string_view<char16_t> u16string_view;
    typedef basic_string_view<char32_t> u32string_view;
    typedef basic_string_view<wchar_t> wstring_view;
 
  }  // namespace fundamentals_v1
  }  // namespace experimental
 
  // 7.11,散列支持
  template <class T> struct hash;
  template <> struct hash<experimental::string_view>;
  template <> struct hash<experimental::u16string_view>;
  template <> struct hash<experimental::u32string_view>;
  template <> struct hash<experimental::wstring_view>;
 
}  // namespace std