std::type_index

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Defined in header <typeindex>

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class type_index;

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The type_index class is a wrapper class around a Template:cpp object, that can be used as index in associative and unordered associative containers. The relationship with type_info object is maintained through a pointer, therefore type_index is Template:concept and Template:concept.

Member functions

(constructor)	constructs the object (public member function)
operator==operator!=operator<operator<=operator>operator>=operator<=> (removed in C++20)(C++20)	compares the underlying std::type_info objects (public member function)
hash_code	returns hashed code (public member function)
name	returns implementation defined name of the type, associated with underlying type_info object (public member function)

Helper classes

std::hash<std::type_index> (C++11)

hash support for std::type_index (class template specialization)

See also

type_info

contains some type’s information, the class returned by the typeid operator (class)