Staying on a field

Jim Ault jimaultwins at
Wed May 4 06:46:06 EDT 2011

There have been several threads on the list over the last few years  
about the inaccuracy of 'is a date' to truly trap errors.

The best source I know is the free stack done by Sarah Riechelt at

Also try clicking on the 'ALL' selection under "Sample Stacks" on the  
same page to see more stacks.

On May 3, 2011, at 11:26 PM, Pete wrote:

> Folks,
> Not strictly related to this but what date format does the syntax  
> "if this
> is not a date" use?  And where is it documented that  "a date" is a  
> valid
> expression?  Just curious since I've spent several hours writing  
> code to try
> to validate a date based on the user's system settings and I've  
> never seen
> mention of this anywhere

Jim Ault
Las Vegas

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