Hey, I have an Array of NSDictionaries (e.g. [tempArray addObject:[[[NSMutableDictionary alloc] initWithObjects:someArray forKeys:keys] autorelease]]; ) and when I try to search through it with NSPred
I\'m trying to fetch results of my entity \"MeterReading\", which has two properties, \"timestamp\" and \"reading\". \"timestamp\" is an NSDate. I\'m now trying to fetch an object with an exact date.
Say I have a Core Data entity called Person. How would I get an NSArray of Persons whose properties match certain values? For instance someone of a particular age, height, or weight... or someone with
i have to check if an id is valid to register an user in the system. I have been reading about the 开发者_Python百科class NSPredicate in order to do this.
I\'m unclear how to remove certain objects from Core Data database. I think I\'ve got it working so I can find the objects, but don\'t know how to delete them from Core Data. In this example I\'m sear
I\'d like to use N开发者_C百科SPredicate to match NSString but I\'m having trouble getting started. My goal is to match certain NSStrings that contain the formats of.
Is there a way to inspect a NSPredicate object for the purposes of serializing it into a URL? I am trying to retrieve the data remotely and need to translate the predicate object into a URL with query
I have an array containing dictionaries, and I want to show the values in a table view according to the \"name\" field in each dictionary. Suppose the name starts with \"a\"; then \"b\" and \"c\" are
I\'m finding that a NSFetchRequest is returning different results for a count and for an execute. I have a Product entity and a Size entity. A Product has many Sizes.
I have an array of objects (Users) each user has an nsset named \"devices\" Is it possible to filter so the array returns all users who have a device with a specific name.
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