What does a CAEmitterCell do?

How do you free an object?

What type of object is this under XCode 4.5: @[rabbit, chicken, owl]

What is the method for adding KVO to your app?

To have an IOS app Screen Design we used which of the following tool?

What does the "id" type mean?

What is an enums base type for the code below? typedef enum { Foo1, Foo2} Foo;

Structs can have _?

What is different about this function? +(void)doSomething;

What best describes class inheritance in Objective-C?

What does ARC stand for?