Hi Stephen,
Search the docs for "empty". It will show you things like
put empty into x
set the cProp to empty
So, you will also want to read up on "put" and "set".
There is also a function "variableNames", which will probably be very
useful to you. Why do you want to check for the existence of a
variable? I do this very, very rarely and only in really advanced
projects.
--
Best regards,
Mark Schonewille
Economy-x-Talk Consulting and Software Engineering
http://economy-x-talk.com
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On 8 mei 2009, at 08:25, Stephen Cox wrote:
Really two questions:
How do I check if a variable is empty? Sort of like;
If !empty(tUsername)
// process here
Endif
Empty() is a Foxpro function that pops if what you are checking is
empty. I
can’t seem to find it’s equivalent in revolution. Am I approaching
this the
wrong way? And can I check fields the same way?
I suppose I could create an empty variable and just compare the 2?
But is
there an easier way?
Next question; checking the existence of a variable? Now I know I
can turn
on Strict Compilation (and I have) but I’d rather have the assurance
of
checking to see if a variable exist? Is this a non-issue in
Revolution?
Thanks
-Stephen Cox
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