nspredicate

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NSFetchResultsController predicate problem

I\'m having problem how to formulate NSPredicate to get correct data. I have three entities (Offer, List, Item) and an entity OfferMatch wchich matches an offer for each pair (List, Item).[详细]

2023-04-01 21:19 分类：问答
NSPredicate compare syntax objective c

I have the following expression NSPredicate* predicate = [NSPredicate predicateWithFormat:@\"v开发者_C百科alue1== %@\", variable1];[详细]

2023-03-31 19:49 分类：问答
CoreData - NSPredicate with NSSet

I have a DB with the following relationships: A <<-->> B A: Members table; B: Activities table A Member has many Activities, and each Activity has many Members. So, a many to many relations[详细]

2023-03-31 19:34 分类：问答
predicateWithFormat vs stringWithFormat: is the former supposed to do the same as the latter?

I have an array with file names and I want to find all 开发者_如何学编程the names that end with e.g. 00001.trc when traceNum is 1. I tried this:[详细]

2023-03-31 11:32 分类：问答
CoreData - NSPredicate results if relationship has data

I have a many-to-many relationship between tables, and I populate a tableView with Activities. For that i user a simple NSPredicate like this:[详细]

2023-03-31 09:09 分类：问答
NSPredicate array contains question [duplicate]

This question already has answers here: Closed 11 years ago. Possible Duplicate: Searching/Filtering a custom class array with a NSPredicate[详细]

2023-03-31 05:18 分类：问答
Create NSPredicate that passes an object to an instance method

I have created an NSManagedObject called TItem. To that object, I\'ve added a helper instance method like the following:[详细]

2023-03-30 05:57 分类：问答
Count values in NSDictionarys within an NSArray

I have an NSArray full of NSDictionary objects. Each dictionary object has a key:value: color: red Amongst other keys... color could be one of many colors that are user generated.[详细]

2023-03-30 01:56 分类：问答
NSPredicate is not filtering the results of a fetch request

OK.This one has me beat. The CoreData graph matches the code you see below. I want to filter Entities by the inherited UUID.I am creating a predicate and a fetch request using the following code:[详细]

2023-03-29 04:30 分类：问答
Core Data With NSData Attribute

I am working on a Core Databased iOS application , in which i stored an array strings in coredata as NSData(binary data).[详细]

2023-03-28 17:58 分类：问答