Standard library header <typeindex> (C++11)

 

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This header is part of the type support library.

Includes
<compare> (C++20)	Three-way comparison operator support
Classes
type_index (C++11)	wrapper around a type_info object, that can be used as index in associative and unordered associative containers (class)
std::hash<std::type_index> (C++11)	hash support for std::type_index (class template specialization)
Forward declarations
Defined in header <functional>
hash (C++11)	hash function object (class template)

Synopsis

#include <compare>   namespace std {class type_index;template<class T>struct hash;template<>struct hash<type_index>;}

Class std::type_index

namespace std {class type_index {public: type_index(const type_info& rhs)noexcept;bool operator==(const type_index& rhs)constnoexcept;bool operator<(const type_index& rhs)constnoexcept;bool operator>(const type_index& rhs)constnoexcept;bool operator<=(const type_index& rhs)constnoexcept;bool operator>=(const type_index& rhs)constnoexcept; strong_ordering operator<=>(const type_index& rhs)constnoexcept; size_t hash_code()constnoexcept;constchar* name()constnoexcept;   private:const type_info* target;// exposition only// Note that the use of a pointer here, rather than a reference,// means that the default copy/move constructor and assignment// operators will be provided and work as expected.};}