The Obj module allows nearly direct access to the memory image of the
Caml runtime system.  My small program explains usefulness and danger
of this module.  The "show_val" function takes an arbitrary Caml value
and prints out their internal representation.

See: http://www.is.titech.ac.jp/~wakita/caml/magic.tgz

Ken

In message (<3940B178.280A76CC@enseeiht.fr>)
from David Chemouil <David.Chemouil@enseeiht.fr>,
talking about "Obj.magic",
on Fri, 09 Jun 2000 10:57:28 +0200

> I'd like to get information about Obj.magic. I know it is some kind of
> identity function `a -> `b, but I'd like to know how it can be used, why
> it can be interesting and why, also, it is sometimes dangerous
> (considering some older posts on this mailing-list). For example, I
> found myself trying some different things (with polymorphic variants and
> coercions, too):