Return-Path: <tvashwin@cs.bu.edu> Received: from csa.bu.edu (csa [128.197.12.3]) by cs3.bu.edu (8.12.11/8.12.11) with ESMTP id i8NHjRa0026001 for <kfoury@cs.bu.edu>; Thu, 23 Sep 2004 13:45:27 -0400 Received: from localhost (tvashwin@localhost) by csa.bu.edu (8.10.1/8.10.1) with ESMTP id i8NHjRY13432 for <kfoury@cs.bu.edu>; Thu, 23 Sep 2004 13:45:27 -0400 (EDT) X-Authentication-Warning: csa.bu.edu: tvashwin owned process doing -bs Date: Thu, 23 Sep 2004 13:45:26 -0400 (EDT) From: ashwin thangali <tvashwin@cs.bu.edu> X-Sender: tvashwin@csa.bu.edu To: kfoury@cs.bu.edu Subject: question regarding head and tail of empty list Message-ID: <Pine.SOL.4.20.0409231342580.13319-100000@csa.bu.edu> Content-Type: TEXT/PLAIN; charset=US-ASCII X-Spam-HitLevel: X-Spam-DCC: sonic.net: cs3.bu.edu 1156; Body=1 Fuz1=1 Fuz2=1 X-Spam-Checker-Version: SpamAssassin 2.64 (2004-01-11) on cs3.bu.edu X-Spam-Level: X-Spam-Status: No, hits=0.0 required=10.0 tests=none autolearn=ham version=2.64 X-Spam-Pyzor: Reported 0 times. Status: X-Mozilla-Status: 8003 X-Mozilla-Status2: 00000000 X-UIDL: 411f69ec00000b72
asaf,
is the result of head (or tail) of a list an element or a list? if its
an element, what does head or tail return for an empty list?
ashwin
Ashwin V. Thangali
111 Cummington Street,MCS 263,
Computer Science Dept,
Boston University,
Boston, MA 02215
Office: 617 358 1139
Home: 617 734 6209
Homepage: http://cs-people.bu.edu/tvashwin
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