Newbie question - how to check for a varible

[Joe Lewis Wilkins]

Stephen,

Without even checking, since it's the way it would be done in HC, just  
use:

if tUsername is empty then ....

if tUsername exists then ...

You were already there. Didn't you check these out in the messagebox?

Joe Wilkins

On May 7, 2009, at 11:25 PM, 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