Doug
-----Original Message-----
From: Mark W. Breneman [mailto:[EMAIL PROTECTED]
Sent: Tuesday, April 20, 2004 3:15 PM
To: CF-Talk
Subject: RE: Is it a bug or not a bug?
Does MM officially support performing mathematical calculations between #
signs? I was sorta under the impression that this was considered not a good
practice. Regardless it is handy.
Mark W. Breneman
-Cold Fusion Developer
-Network Administrator
Vivid Media
[EMAIL PROTECTED]
www.vividmedia.com
608.270.9770
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From: Dave Carabetta [mailto:[EMAIL PROTECTED]
Sent: Tuesday, April 20, 2004 2:03 PM
To: CF-Talk
Subject: RE: Is it a bug or not a bug?
>#(true and 4*5)# returns 20.
>#(false and 4*5)# returns false.
>#(4*5 and false)# returns false.
>#(4*5 and true)# returns true.
>
>Is it a bug or it is using some sort of _expression_ evaluation that I am not
>aware of.
>
CF uses short-circuit boolean evaluation. So it'll either stop the moment it
hits a false condition or it'll go to completion. Further, any non-zero
value evaluates to true, so 4*5 (20) will always evaluate to true.
Regards,
Dave.
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