stdtypeindextypeidT
stdtypeindextypeidT is a type alias used in some C++ codebases to represent an index into a runtime type registry. It is not part of the C++ Standard Library; rather, it is a project-specific typedef that acts as a handle to a type identity, often in conjunction with std::type_index or typeid.
Typically defined as an unsigned integral type, the exact underlying type of stdtypeindextypeidT varies by implementation.
Usage centers on mapping from a type identifier (such as a std::type_index constructed from typeid(T)) to an
Considerations when using stdtypeindextypeidT include thread-safety during registry construction, and the choice of a sentinel or
In summary, stdtypeindextypeidT serves as a portable, unsigned index type for referring to entries in a type