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Path: utzoo!watmath!clyde!rutgers!seismo!mcnc!unc!rentsch
From: rentsch@unc.UUCP
Newsgroups: comp.lang.misc
Subject: Re: OOPS
Message-ID: <815@unc.unc.UUCP>
Date: Sun, 8-Feb-87 07:00:55 EST
Article-I.D.: unc.815
Posted: Sun Feb  8 07:00:55 1987
Date-Received: Mon, 9-Feb-87 03:45:31 EST
References: <364@oracle.tc.fluke.COM> <814@unc.unc.UUCP>
Reply-To: rentsch@unc.UUCP (Tim Rentsch)
Distribution: comp.lang.misc
Organization: CS Dept, U. of N. Carolina, Chapel Hill
Lines: 16

In article <814@unc.unc.UUCP> rentsch@unc.UUCP (Tim Rentsch) writes:
> Now, Stream and Random have almost nothing in common (they happen to
> share the 'next' message, and their only common superclass is
> Object).  This example shows a useful case where we know essentially
> nothing about the object X (only that it responds to 'next' and
> returns a Float).

My mistake:  Random is in fact a subclass of Stream in the standard
Smalltalk system.  But, there is no reason it has to be -- Random
could just as easily have been a subclass of Object.  More to the
point, as an sender to an argument of class Random, I don't know
(obviously!) or care whether Random is related to Stream or not.  

cheers,

Tim