ftp.cs.arizona.edu/ftp.cs.arizona.edu.tar/ftp.cs.arizona.edu/icon/newsgrp/group93b.txt/000085_icon-group-sender _Fri May 14 09:46:40 1993.msg

Internet Message Format | 1993-06-16 | 1KB

Received: by cheltenham.cs.arizona.edu; Fri, 14 May 1993 08:58:37 MST
Date: Fri, 14 May 93 09:46:40 -0400
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Subject: string stripping
From: Sean Boisen <[e-mail]>
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This is so basic it's probably covered in the second week of Icon 101,
but since i never took the class ...

If i have a string and i want to strip out certain characters
(internal ones, so trim won't do it), i can do it like this

# assume you want to remove hyphens and periods
full := "abc-def.ghi"
bare := ""
badchars := '-.'

every c := !full do
   # test whether the intersection of c and badchars is empty
   if *(c ** badchars) = 0 then bare ||:= c

But this seems awfully clunky, and i was disappointed that i couldn't
come up with a tighter way to do it: am i missing some more idiomatic
way to express this? Note there's two parts that i perceive as clunky:
the testing of whether c is in badchars (i suppose you could make
badchars a string and use find instead), and the control structure
with explicit generation and assignment to a new string.

Any Icon stylists want to offer some pointers on improvements?

Sean