One example, that reformats an addition to a custom prop containing
some data might be
setProp someData aValue
set the someData of me to the someData of me & reformat(aValue)
end someData
similarly, to ensure that you only ever get a formatted version of a
custom prop
getProp someValue
return format("%8.2f",the someValue of me)
end someValue
You can also use them to create dummy custom props:
getProp Area
return the width of me * the height of me
end Area
so you can now script : get the Area of fld 1
I'm sure other people have lots of other uses....
Best,
Mark
On 12 Apr 2006, at 18:44, Thomas McGrath III wrote:
Does anyone have any examples on the get/setProps in real usage? I
have been using custom props but not the setProp etc. I would love
some more insightful ideas on it's usage.
Thanks
Tom
On Apr 11, 2006, at 3:41 PM, Devin Asay wrote:
On Apr 11, 2006, at 1:14 PM, Dan Shafer wrote:
Cutom Properties were one of the primary features of Rev that
attracted me
back into the xTalk fold. They are immensely powerful. Even my
eBook (thanks
for the plug, Scott!) only scratches the surface. Every time I
find a new
use for one of these puppies I get more astonished.
Example: You can put a complete binary file into a custom prop
and ship it
as a single unit. That's how I embed the PDFs in my SmartEBooks. So
convenient. SO fast.
I had the same reaction when I finally "got" custom properties. My
favorite recent discovery is the setProp structure. Any time some
obscure handler in my project changes a property's value all I
have to do is include a setProp structure to tell my stack what's
supposed to happen. So often we HyperCard refugees have long-
ingrained habits for working around issues, and all of a sudden we
discover extremely powerful elements of Transcript--oops, I mean
Revolution, I mean the scripting language formerly known as
Transcript-- that transform our scripting lives.
Devin
Devin Asay
Humanities Technology and Research Support Center
Brigham Young University
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