Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!ukc!mucs!liv-cs!liv!qq11
From: QQ11@LIVERPOOL.AC.UK (Alan Thew)
Newsgroups: comp.lang.rexx
Subject: Re: Question about Parsing
Message-ID: <90335.011453QQ11@LIVERPOOL.AC.UK>
Date: 1 Dec 90 01:14:53 GMT
References: <9304@ncar.ucar.edu>
Organization: University of Liverpool
Lines: 34

In article <9304@ncar.ucar.edu>, tparker@bierstadt.scd.ucar.edu (Tom Parker)
says:
>
>Here's a question regarding PARSEing in REXX on VM/CMS:
>
>In parsing, I know you can use a string pattern in a variable, by putting
>it in parentheses.  For example:
>
>         slash = '/'
>         parse value 'dog/cat' with word1 (slash) word2
>
>But I can't find how to use a NUMERIC pattern in a variable.  For
>example, I might want to break a string at a specific column determined
>by the program.  Simplistic example:
>
>         column = 4
>         parse value 'dog/cat' with word1 (column) word2
>
>will use '4' as a string pattern, rather than as a number pattern.
>
>
>So, my question is: is there a way to use a numeric pattern in a variable
>when parsing?
>
Try     parse var 'dog/cat' word1 4 5  word2
This will assign "dog" to word1 and "cat" to word2 and omit the "/"
REXX also allows relative patterns e.g. the above could be
        parse var 'dog/cat' word1 4 +1 word2

Alan Thew  : University of Liverpool Computer Laboratory
Bitnet/Earn: QQ11@LIVERPOOL.AC.UK or QQ11%UK.AC.LIVERPOOL @ UKACRL
    UUCP   :           ....!mcsun!ukc!liv!qq11
   Voice   :  +44 51 794 3735        FAX : +44 51 794 3759
Internet   : QQ11@LIVERPOOL.AC.UK or QQ11%LIVERPOOL.AC.UK @ NSFNET-RELAY.AC.UK


Brought to you by Super Global Mega Corp .com