From: calfeld@...
Date: 2008-05-24T02:44:59+09:00
Subject: Re: Module.===(X,X) is false

Thanks for all the feedback.

I'm aware of the usual use of Module.===, namely to check if an object
is an instance of a class or descendent of that class.

My issue is not with when Module.=== is true, my issue is with a
specific example of when it is false.  Namely, that, for a class (not
an instance) X, the following is true:

  (! (X === X)) && (X == X)

This surprises me, and denies me the ability to compare a class (an
instance of Class) to its possible values (instances of Class) in a
case statement.

Thanks again,
  c.