NSComparisonPredicate vs. predicateWithFormat
NSComparisonPredicate vs. predicateWithFormat
- Subject: NSComparisonPredicate vs. predicateWithFormat
- From: Rick Mann <email@hidden>
- Date: Fri, 23 Nov 2012 21:52:57 -0800
I'm trying to set up an "IN" predicate like this:
NSArray* deletedAlertIDs = @[ @198, @197 ];
NSPredicate* pred =
[NSComparisonPredicate predicateWithLeftExpression: [NSExpression expressionForKeyPath: @"keyShadow"]
rightExpression: [NSExpression expressionForAggregate: deletedAlertIDs]
modifier: NSDirectPredicateModifier
type: NSInPredicateOperatorType
options: 0];
req.predicate = pred;
But it doesn't work, even though NSLog() shows it as "keyShadow IN {198, 197}", which is the same as what I get when I use this code that works:
req.predicate = [NSPredicate predicateWithFormat: @"keyShadow IN %@", deletedAlertIDs];
Clearly something is different between the two that's not shown in the description.
--
Rick
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden