Richard Gaskin wrote:
It's very handy, but a cognitive hurdle for me at first. I'd never seen
anything like it before.
You probably blocked it. :)
<http://search.gmane.org/?query=custom+sort&group=gmane.comp.ide.revolution.user>
Anyone else have a mental hiccup when they first encountered this?
All of us. The concept is really snarly, and requires some mental
gymnastics. And even with the ones I've written myself, I still have to
figure them out all over again each time I want to use them.
Speaking of mental gymnastics, here's my favorite. I use it a lot. I
didn't write it, it was written by Tony Root from HyperPro back in the
day, and turned into a function by Paul Foraker:
function whichOne var,fld1,fld2 -- from a handler by Tony Root
-- Handles a case where you need to return one value if your key is
empty, another if not.
return (item offset(char 1 of (var = empty),"tf") of quote & fld1
&","& fld2 & quote)
end whichOne
Paul says:
"There's a great scripter working at Digital Pictures named Tony Root,
who wrote a one-line boolean evaluator that I corrupted into a function.
This handles the case where you need to return one value if your key is
empty, another if not. For example, if the social security number field
(var) is empty, then return "Please fill in your social security number"
(fld1); otherwise, return "Now please fill in the form on the next
page." (fld2). The elegant part (which Tony wrote) is getting the offset
of char 1 of an expression that resolves to true or false, of "tf". Wish
I'd thought of that. "
You don't have to use it for just empty/not empty. With some
adjustments, you can use it to choose between any two values.
--
Jacqueline Landman Gay | [EMAIL PROTECTED]
HyperActive Software | http://www.hyperactivesw.com
_______________________________________________
use-revolution mailing list
use-revolution@lists.runrev.com
Please visit this url to subscribe, unsubscribe and manage your subscription
preferences:
http://lists.runrev.com/mailman/listinfo/use-revolution
