I am working on setting up a count cache for an (Foo)NSManagedObject\'s association(Bar). In object Foo, I want to keep a count of how many Bars it has. I want to avoid hitting the database every time
I am trying to pull in a RSS fee开发者_C百科d and sort by pubDate. When I examine the \'updated\' property, most of the time it is correct and give me a proper date but when I try to convert from a se
My NSManagedObject says Tag has 2 To－many relationships，says posts and children. And I let Xcode 4 to generate NSManagedObject subclass for it.But I find that only one relationship can return the co
My Cocoa/Application has a Managed Object Context on the main thread. When I need to update my data my program will:
i would like to understand a bit more Core Data, why do we \"fetch\" and search for entities while the entities are \"inside\" managed objects? For example :
As the title suggests im working with a Core Data Application which gets filled with objects in different background threads (XML Parsing)
I am developing a app where with a custom tabbar opening different tableview. The information to the tableview is feeded by a JSON remote feed. And saved into Core Data with custom nsmanagedobject.
I have a core data entity called Hospitals. There are three fields: name(string), latitude(double), and longitude(double).
my NSManagedObjectModel is returning nil eventhough the path is correct. NSString *modelKey = [NSString stringWithFormat:@\"/%@/Model\", name];
Firstly, I have found a couple of related questions on the issue with links pasted below, but none have really helped me solve the problem:
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