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From: dscargo@CIM-VAX.HONEYWELL.COM ("DAVE CARGO")
Newsgroups: comp.lang.icon
Subject: reverse match
Message-ID: <8911201630.AA01326@megaron.arizona.edu>
Date: 17 Nov 89 22:53:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: inet
Organization: The Internet
Lines: 18

I found myself writing a application where I wanted to make a decision
based on characters at the END of a string.  I wanted something like match
but working from the end rather than the beginning of the string.  What I
chose by way of implementation was the following:

nekot := reverse(token)
if match("." | ")." | "\"." | ")\".", nekot) ...

I have two questions.  In general is there a better way to do this?  The
strings I wanted to test for are different sizes so a fixed range didn't work.
Second, could I have used

if match("." | ")." | "\"." | ")\".", reverse(token))

directly without having the reverse(...) evaluated multiple times?  (An
admittedly lazy question on my part, since I could have tested this.)

David S. Cargo (DSCARGO@CIM-VAX.HONEYWELL.COM)