Path: utzoo!utgpu!watmath!att!dptg!rutgers!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!rpi!image.soe.clarkson.edu!bkc
From: bkc@image.soe.clarkson.edu (Brad Clements)
Newsgroups: comp.lang.postscript
Subject: Re: Case statements in Postscript
Message-ID: <1989Aug30.151133.21046@sun.soe.clarkson.edu>
Date: 30 Aug 89 15:11:33 GMT
References: <7573@cg-atla.UUCP>
Sender: bkc@sun.soe.clarkson.edu (Brad Clements)
Organization: Clarkson University, Potsdam, NY
Lines: 37

From article <7573@cg-atla.UUCP>, by kincaid@cg-atla.UUCP (Tom Kincaid ):
> If I have a postscript variable V1 that can have a value 
>  1 2 3 or 4 and I want to execute 
> 
> 	/proc1 if V1 = 1
> 	/proc2 if V1 = 2
> 	/proc3 if V1 = 3
> 	/proc4 if V1 = 4
> 
> What is the best way to write the code ? Is there a case
> statement of some sort ?

This is cheap. Not in processing time though...

% define proc1 through proc4
/case_array [
	/proc1 load
	/proc2 load
	/proc3 load
	/proc4 load
] def

....
% suppose V1 now has a value between 1 and 4
	case_array v1 1 sub get exec

% presto, all done. Better off letting V1 have values 0 through 3



| Brad Clements          bkc@omnigate.clarkson.edu        bkc@clutx.bitnet 
| Network Engineer       Clarkson University              (315)268-2292
-- 

| Brad Clements          bkc@omnigate.clarkson.edu        bkc@clutx.bitnet 
| Network Engineer       Clarkson University              (315)268-2292