In manual memory management, what do you do when you don't need a reference on a object ?

Which object is visible to the user?

viewDidLoad comes after viewDidAppear?

When using ARC, how do you destroy an object in Objective C?

Is it possible to make a full application without using Interface Builder?

If you use threading, on which thread should UI Transitions be called?

In ApplePay JS, which is correct about the ApplePayPaymentRequest data type?

Which App Extension points are available both in iOS and macOS?

Which statement is correct about the NSManagedObject class?

Which option is correct about the Operation class, NSOperation?

The iMessage app is used to: