From Jason Turner

[type.index.members]

C++17 → C++20 1.4 KB 33 lines
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Archived: C++17 | C++20
Markdown: C++17 | C++20
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  1. tmp/tmpsh0y7rn6/{from.md → to.md} +18 -12
tmp/tmpsh0y7rn6/{from.md → to.md} RENAMED
@@ -11,40 +11,46 @@ type_index(const type_info& rhs) noexcept;
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  bool operator==(const type_index& rhs) const noexcept;
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  ```
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  *Returns:* `*target == *rhs.target`.
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- ``` cpp
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- bool operator!=(const type_index& rhs) const noexcept;
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- ```
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-
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- *Returns:* `*target != *rhs.target`.
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-
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  ``` cpp
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  bool operator<(const type_index& rhs) const noexcept;
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  ```
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  *Returns:* `target->before(*rhs.target)`.
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- ``` cpp
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- bool operator<=(const type_index& rhs) const noexcept;
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- ```
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-
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- *Returns:* `!rhs.target->before(*target)`.
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-
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  ``` cpp
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  bool operator>(const type_index& rhs) const noexcept;
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  ```
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  *Returns:* `rhs.target->before(*target)`.
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  ``` cpp
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  bool operator>=(const type_index& rhs) const noexcept;
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  ```
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  *Returns:* `!target->before(*rhs.target)`.
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  ``` cpp
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  size_t hash_code() const noexcept;
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  ```
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  *Returns:* `target->hash_code()`.
 
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  bool operator==(const type_index& rhs) const noexcept;
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  ```
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  *Returns:* `*target == *rhs.target`.
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  ``` cpp
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  bool operator<(const type_index& rhs) const noexcept;
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  ```
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  *Returns:* `target->before(*rhs.target)`.
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  ``` cpp
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  bool operator>(const type_index& rhs) const noexcept;
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  ```
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  *Returns:* `rhs.target->before(*target)`.
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+ ``` cpp
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+ bool operator<=(const type_index& rhs) const noexcept;
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+ ```
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+
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+ *Returns:* `!rhs.target->before(*target)`.
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+
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  ``` cpp
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  bool operator>=(const type_index& rhs) const noexcept;
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  ```
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  *Returns:* `!target->before(*rhs.target)`.
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+ ``` cpp
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+ strong_ordering operator<=>(const type_index& rhs) const noexcept;
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+ ```
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+
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+ *Effects:* Equivalent to:
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+
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+ ``` cpp
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+ if (*target == *rhs.target) return strong_ordering::equal;
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+ if (target->before(*rhs.target)) return strong_ordering::less;
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+ return strong_ordering::greater;
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+ ```
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+
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  ``` cpp
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  size_t hash_code() const noexcept;
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  ```
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  *Returns:* `target->hash_code()`.