Is there a Type2Type in boost ?

From: Baptiste Lepilleur (blepctc_at_[hidden])
Date: 2002-09-17 15:03:20

    Hi everyone,
    I've looked around and failed to find the Type2Type template, detailed
by Andrei Alexandrescu in a CUJ article
(http://cuj.com/experts/1810/alexandr.htm?topic=experts), in boost.

    While the implementation is trivial:

 template<typename Type>
 struct Type2Type
 {
  typedef Type original_type;
 };

    I'd rather have it in a well known library. Has it been replaced by
something else ?

    Baptiste.