Re: Three Kinds of Logical Trees
From: Jonathan Leffler <jleffler_at_earthlink.net>
Date: Thu, 28 Jul 2005 05:47:24 GMT
Message-ID: <Mj_Fe.6238$Uk3.6068_at_newsread1.news.pas.earthlink.net>
>
> for the physical switch being set to the up position, right?
>
>
> and down position. Yes, Gene, those are the two I choose as well,
> ignoring the shades of gray. --dawn
Date: Thu, 28 Jul 2005 05:47:24 GMT
Message-ID: <Mj_Fe.6238$Uk3.6068_at_newsread1.news.pas.earthlink.net>
dawn wrote:
> Gene Wirchenko wrote:
>> What are the two values of your logic? I use true
>
> for the physical switch being set to the up position, right?
>
>>and false
>
> and down position. Yes, Gene, those are the two I choose as well,
> ignoring the shades of gray. --dawn
These comments suggest an American (USA) perspective on the polarity of switches. In the UK, a (light) switch that is up is normally off and one that's down is normally on - at least, for most switches. It still catches me out.
(I hope I have the attributions right - apologies if not.)
--
Jonathan Leffler #include <disclaimer.h>
Email: jleffler_at_earthlink.net, jleffler_at_us.ibm.com
Guardian of DBD::Informix v2005.01 -- http://dbi.perl.org/
Received on Thu Jul 28 2005 - 07:47:24 CEST