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From: ug@linkoping.telesoft.se (Ulf G|ransson)
Newsgroups: comp.lang.rexx
Subject: Re: looking at individual characters in a string
Message-ID: <732@castor.linkoping.telesoft.se>
Date: 11 Feb 91 09:53:34 GMT
References: <91039.085930GIAMPAL@auvm.auvm.edu>
Organization: TeleSoft AB, Linkoping, Sweden
Lines: 31

In article <91039.085930GIAMPAL@auvm.auvm.edu> GIAMPAL@auvm.auvm.edu writes:
>that are contained in a Rexx string.  Suppose I do :
>
>                parse pull mystring
>
>Then I want to see individual characters in mystring.  I know I could
>use the index() function or substr(), but that seems wasteful, not to
>mention slow.

You could use the splitting capabilities of the PARSE instruction.
If you just want to see each character from left to right, the following
example could be used:

		tmp=mystring
		do i=1 until tmp=''
		  parse var tmp char +1 tmp
		  say 'Character #'i 'is "'char'"'
		  end

You could also pick out individual characters in the middle
of the string, using something like:

		i=7
		parse var mystring =i +1

but then I would rather use SUBSTR.

-- 
Ulf Goransson, Telesoft Europe AB         (ug@linkoping.telesoft.se)

And now for something completely different.