tmp/tmpx0t003we/{from.md → to.md}
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### `type_index` overview <a id="type.index.overview">[[type.index.overview]]</a>
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``` cpp
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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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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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