Re: Custom alerts for Core Data validation errors ... how to?

FROM : Chris Hanson
DATE : Fri Nov 30 21:47:25 2007

On Nov 30, 2007, at 12:30 PM, Richard Wolf wrote:

> But what I can't find is a way to do this:
>
> BOOL result = [*ioValue matchesRegularExpression:@"[A-Z0-9]{32,32}"];


NSPredicate has a matches-regular-expression operator.

That's how the validation conditions you define in your model are 
actually represented at runtime; see the documentation for 
NSPropertyDescription's validationPredicates property.

  -- Chris