question regarding head and tail of empty list

From: ashwin thangali (tvashwin@cs.bu.edu)
Date: Thu Sep 23 2004 - 13:45:26 EDT


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Date: Thu, 23 Sep 2004 13:45:26 -0400 (EDT)
From: ashwin thangali <tvashwin@cs.bu.edu>
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Subject: question regarding head and tail of empty list
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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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