From Jason Turner

[type.index.overview]

C++17 → C++20 1.5 KB 12 lines
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Archived: C++17 | C++20
Markdown: C++17 | C++20
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  1. tmp/tmp5ah073ra/{from.md → to.md} +5 -4
tmp/tmp5ah073ra/{from.md → to.md} RENAMED
@@ -4,25 +4,26 @@
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  namespace std {
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  class type_index {
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  public:
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  type_index(const type_info& rhs) noexcept;
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  bool operator==(const type_index& rhs) const noexcept;
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- bool operator!=(const type_index& rhs) const noexcept;
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  bool operator< (const type_index& rhs) const noexcept;
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- bool operator<= (const type_index& rhs) const noexcept;
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  bool operator> (const type_index& rhs) const noexcept;
 
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  bool operator>=(const type_index& rhs) const noexcept;
 
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  size_t hash_code() const noexcept;
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  const char* name() const noexcept;
 
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  private:
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  const type_info* target; // exposition only
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  // Note that the use of a pointer here, rather than a reference,
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  // means that the default copy/move constructor and assignment
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  // operators will be provided and work as expected.
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  };
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  }
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  ```
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  The class `type_index` provides a simple wrapper for `type_info` which
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- can be used as an index type in associative containers (
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- [[associative]]) and in unordered associative containers ([[unord]]).
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  namespace std {
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  class type_index {
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  public:
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  type_index(const type_info& rhs) noexcept;
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  bool operator==(const type_index& rhs) const noexcept;
 
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  bool operator< (const type_index& rhs) const noexcept;
 
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  bool operator> (const type_index& rhs) const noexcept;
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+ bool operator<=(const type_index& rhs) const noexcept;
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  bool operator>=(const type_index& rhs) const noexcept;
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+ strong_ordering operator<=>(const type_index& rhs) const noexcept;
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  size_t hash_code() const noexcept;
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  const char* name() const noexcept;
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+
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  private:
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  const type_info* target; // exposition only
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  // Note that the use of a pointer here, rather than a reference,
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  // means that the default copy/move constructor and assignment
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  // operators will be provided and work as expected.
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  };
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  }
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  ```
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  The class `type_index` provides a simple wrapper for `type_info` which
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+ can be used as an index type in associative containers [[associative]]
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+ and in unordered associative containers [[unord]].
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