Problem with zeros in lookup table
erikhans08 at yahoo.com
Thu Nov 23 02:00:38 EST 2006
if (tVar is a number) then...
erik at erikhansen.org http://www.erikhansen.org
----- Original Message ----
From: Ken Ray <kray at sonsothunder.com>
To: Use Revolution List <use-revolution at lists.runrev.com>
Sent: Wednesday, November 22, 2006 7:45:36 PM
Subject: Re: Problem with zeros in lookup table
On 11/22/06 8:08 PM, "Mark Smith" <mark at maseurope.net> wrote:
> I don't know what a stanine score is, or how you're organizing your
> scores, but you might want to put code in to check whether or not the
> raw score is empty, zero or whatever. Sometimes in Revolution you can
> include an empty variable in a numerical calculation and still get a
> numerical result, rather than an error.
That's a good point. Many times I need to check if a variable is empty or 0
and take the same action. One *could* write it this way:
if (tVar = 0) or (tVar = "") then
but another (shorter way) is:
if (tVar + 0) = 0 then
This way, if tVar is 0 or empty, it ends up becoming 0 (empty + 0 = 0).
Sons of Thunder Software, Inc.
Web site: http://www.sonsothunder.com/
Email: kray at sonsothunder.com
use-revolution mailing list
use-revolution at lists.runrev.com
Please visit this url to subscribe, unsubscribe and manage your subscription preferences:
Check out Yahoo! Messenger's low PC-to-Phone call rates.
More information about the Use-livecode