NSPredicate to test for NULL, and blank strings

If you don't use Core Data, you could do:

NSPredicate *predicateName = [NSPredicate predicateWithFormat:@"name.length > 0"];

If the string is empty, this will fail (because 0 == 0). Similarly, if name is nil, it will also fail, because [nil length] == 0.

ios objective-c nspredicate

I think this should work:

NSPredicate *predicateName = [NSPredicate predicateWithFormat:@"name!=nil AND name!=''"];

ios objective-c nspredicate

 NSPredicate *predicateName = [NSPredicate predicateWithFormat:@"name!=NULL"];

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