Re: Inverse video/text

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Article #40303

#40303

From: Bob Carlson
Date: Mon, 03 Apr 1989 16:39

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In about 1973 someone taught me the trick of XOR A,B XOR B,A XOR A,B
in order to do a swap.  It's hardly a new idea, nor is it limited to 
graphics.

Cheers

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!ucsd!sdcsvax!ucsdhub!hp-sdd!hplabs!hpda!hpcuhb!hpindda!carlson
From: carlson@hpindda.HP.COM (Bob Carlson)
Newsgroups: comp.sys.mac
Subject: Re: Inverse video/text
Message-ID: <40260013@hpindda.HP.COM>
Date: 3 Apr 89 16:39:48 GMT
References: <5894@pdn.paradyne.com>
Organization: HP Information Networks, Cupertino, CA
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