<typeindex>
The latest version of this topic can be found at <typeindex>.
Include the standard header <typeindex> to define a class and function that support the indexing of objects of class type_info.
Syntax
#include <typeindex>
Remarks
The hash Structure defines a hash function
that's suitable for mapping values of type type_index to a distribution of index values.
The type_index
class wraps a pointer to a type_info
object to assist in indexing.
See Also
Header Files Reference
Thread Safety in the C++ Standard Library
Standard Template Library