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Subject:      Scheme Digest #280
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Scheme Digest #280                             24 Jan 90  02:15:06 EST

Today's Topics:

        () as an expression


Message-ID: <1990Jan23.203035.148@vicom.com>
Date: 23 Jan 90 20:30:35 GMT
From: Roderic Taylor <snorkelwacker!apple!vsi1!roderic@bloom-beacon.mit.edu>
To: scheme@mc.lcs.mit.edu
Subject: Re: () as an expression

In a recent article Jason Coughlin (jk0@sun.soe.clarkson.edu) writes:

=Why is () an invalid expression?  It seems to me that it is a constant.

   () is not a constant.  '() is a constant (at least in the sense
you're thinking).  This is the way Lisp works with all lists, not
just the empty one.

                                            --Roderic T


End of Scheme Digest