Error when inserting NSDate to CoreData

Question

    NSDateFormatter *dt = [[NSDateFormatter alloc] init];
    [dt setDateFormat:@\"dd-MM-yyyy\"];
    NSDate *bdate = [dt dateFromString:@\"02-02-2013\"];
    [nouContac         


        

Answer 1

For a "Date" attribute, Core Data stores the "number of seconds since 1 January 2001, GMT" in the SQLite file, i.e. what you get with

[bdate timeIntervalSinceReferenceDate]

For example, 2011-02-02 19:00:00 +0000 is stored as the number 318366000.

But that is an implementation detail and you should not worry about it. When reading objects from the SQLite file, the number is converted back do an NSDate.