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2014/10/15 ¤U¤È 10:04:43
iphone Programming Glossary: bsHow to make button in child view to update information in its parent view? http://stackoverflow.com/questions/15182175/how-to-make-button-in-child-view-to-update-information-in-its-parent-view there is also a UIButton B that when pressed can update the UILabel A in ViewA. In fact there should be many UIButton Bs in ViewB but let's just say one for simplicity. That's what I want to achieve and here are what I've done. I've created..
http://stackoverflow.com/questions/3807532/nspredicate-for-to-many-relationship-where-a-relationship-nsset-must-contain B belongs to exactly one A Entity B B a B can be related to other B's So in class A @property nonatomic retain NSSet Bs In class B @property nonatomic retain A A @property nonatomic retain NSSet Bs Assume I have an NSArray myArray containing.. class A @property nonatomic retain NSSet Bs In class B @property nonatomic retain A A @property nonatomic retain NSSet Bs Assume I have an NSArray myArray containing Bj Bk . What I want is to fetch all B 's which belong to Ax and are related.. entityForName @ B inManagedObjectContext self.managedObjectContext NSPredicate predicateWithFormat @ A @ and Bs contains @ and Bs contains @ Ax myArray objectAtIndex 0 myArray objectAtIndex 1 How can I rewrite the predicate so that..
Quick Explanation of SUBQUERY in NSPredicate Expression http://stackoverflow.com/questions/3810992/quick-explanation-of-subquery-in-nspredicate-expression could someone from the inner circle please just provide a quick explanation of its syntax so I can use it SUBQUERY Bs x x IN @ Thanks iphone cocoa cocoa touch nspredicate share improve this question This is what a subquery evaluates..
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