Comments on: Filtering Fun with Predicates http://www.cocoanetics.com/2010/03/filtering-fun-with-predicates/ Our DNA is written in Objective-C Mon, 14 May 2012 19:43:35 +0100 hourly 1 http://wordpress.org/?v=3.3.2 By: Dave K http://www.cocoanetics.com/2010/03/filtering-fun-with-predicates/#comment-4156 Dave K Thu, 12 Jan 2012 23:25:48 +0000 http://www.drobnik.com/touch/?p=2264#comment-4156 helloooooo? anybody have a good answer for me? helloooooo? anybody have a good answer for me?

]]> By: Dave K http://www.cocoanetics.com/2010/03/filtering-fun-with-predicates/#comment-4146 Dave K Wed, 11 Jan 2012 19:01:43 +0000 http://www.drobnik.com/touch/?p=2264#comment-4146 ok heh, let me rephrase that... what would the code look like to result in an array programWithVariableValues, for example, consisting of @”-60″,@”12.6″,@”100″,@”.3″,nil? ok heh, let me rephrase that…

what would the code look like to result in an array programWithVariableValues, for example, consisting of @”-60″,@”12.6″,@”100″,@”.3″,nil?

]]> By: Drops http://www.cocoanetics.com/2010/03/filtering-fun-with-predicates/#comment-4145 Drops Wed, 11 Jan 2012 16:30:18 +0000 http://www.drobnik.com/touch/?p=2264#comment-4145 Not by itself, because a predicate evaluates to true or false. Not by itself, because a predicate evaluates to true or false.

]]> By: Dave K http://www.cocoanetics.com/2010/03/filtering-fun-with-predicates/#comment-4144 Dave K Wed, 11 Jan 2012 16:14:54 +0000 http://www.drobnik.com/touch/?p=2264#comment-4144 hey.. this is nice and concise... i'm curious though... can NSPredicates be used to replace objects in an array with values from a dictionary? //so for example if i had an NSDictionary like this: NSMutableDictionary *valuesDictionary = [NSMutableDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithDouble:-60.0],@"a", [NSNumber numberWithDouble:0.0],@"b", [NSNumber numberWithDouble:-12.0],@"c", [NSNumber numberWithDouble:.3],@"x", nil]; //and an array like this: NSArray *program = [NSArray arrayWithObjects: @"a",@"12.6",@"100",@"x",nil]; //is there a nice way with NSPredicate to make a new array that would end up like this? //@"-60",@"12.6",@"100",@".3",nil //replacing any variables found in the array with their valueforkey's? -Dave hey.. this is nice and concise… i’m curious though… can NSPredicates be used to replace objects in an array with values from a dictionary?

//so for example if i had an NSDictionary like this:

NSMutableDictionary *valuesDictionary = [NSMutableDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithDouble:-60.0],@”a”,
[NSNumber numberWithDouble:0.0],@”b”,
[NSNumber numberWithDouble:-12.0],@”c”,
[NSNumber numberWithDouble:.3],@”x”, nil];
//and an array like this:

NSArray *program = [NSArray arrayWithObjects: @"a",@"12.6",@"100",@"x",nil];

//is there a nice way with NSPredicate to make a new array that would end up like this?

//@”-60″,@”12.6″,@”100″,@”.3″,nil

//replacing any variables found in the array with their valueforkey’s?

-Dave

]]> By: rinopazzo http://www.cocoanetics.com/2010/03/filtering-fun-with-predicates/#comment-4142 rinopazzo Tue, 10 Jan 2012 12:58:08 +0000 http://www.drobnik.com/touch/?p=2264#comment-4142 [self setSearchDisplayController:searchDisplayController]; It is a private API, I use this code and my app was rejected!!! [self setSearchDisplayController:searchDisplayController];

It is a private API, I use this code and my app was rejected!!!

]]> By: Stanislav Y http://www.cocoanetics.com/2010/03/filtering-fun-with-predicates/#comment-3969 Stanislav Y Thu, 15 Dec 2011 22:13:00 +0000 http://www.drobnik.com/touch/?p=2264#comment-3969 Just compare it to NOT "" Just compare it to NOT “”

]]> By: Midhun http://www.cocoanetics.com/2010/03/filtering-fun-with-predicates/#comment-3822 Midhun Thu, 17 Nov 2011 10:14:34 +0000 http://www.drobnik.com/touch/?p=2264#comment-3822 Thanks, good one ..... Thanks, good one …..

]]> By: mrburns05 http://www.cocoanetics.com/2010/03/filtering-fun-with-predicates/#comment-3814 mrburns05 Mon, 14 Nov 2011 23:00:48 +0000 http://www.drobnik.com/touch/?p=2264#comment-3814 How would i check the length of a string in a predicate? is this possible i want to filter the results to contain only "Event"s who's ([description length] > 0 ) Please help if you can How would i check the length of a string in a predicate? is this possible i want to filter the results to contain only “Event”s who’s ([description length] > 0 )

Please help if you can

]]> By: Noureddine Zaatari http://www.cocoanetics.com/2010/03/filtering-fun-with-predicates/#comment-3175 Noureddine Zaatari Sat, 08 Oct 2011 08:52:05 +0000 http://www.drobnik.com/touch/?p=2264#comment-3175 Thank you for the great tutorial, i really appreciate it.. Thank you for the great tutorial, i really appreciate it..

]]> By: Mrburns05 http://www.cocoanetics.com/2010/03/filtering-fun-with-predicates/#comment-2914 Mrburns05 Fri, 12 Aug 2011 19:09:48 +0000 http://www.drobnik.com/touch/?p=2264#comment-2914 Like that last guy, just wanted to post a thanks! Ive still new to core data and got on google wondering if it was possible to use multiple predicates. This was the first site my search pull sand was exactly what i was looking for! Like that last guy, just wanted to post a thanks! Ive still new to core data and got on google wondering if it was possible to use multiple predicates. This was the first site my search pull sand was exactly what i was looking for!

]]> By: Dave Lee http://www.cocoanetics.com/2010/03/filtering-fun-with-predicates/#comment-2695 Dave Lee Sun, 03 Jul 2011 06:07:56 +0000 http://www.drobnik.com/touch/?p=2264#comment-2695 Just wanted to say thanks for taking the time to post this example. Was very helpful to me in trying to learn Core Data for iOS. Dave Just wanted to say thanks for taking the time to post this example. Was very helpful to me in trying to learn Core Data for iOS.

Dave

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