iOS Guide
BEST COLLECTION OF IOS INTERVIEW QUESTIONS WITH ANSWERS.
Thursday, January 18, 2018
What is type aliasing in Swift?
This borrows very much from C/C++. It allows you to alias a type, which can be useful in many particular contexts.
typealias AudioSample = UInt16
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NSThread vs GCD
Migrating Away from Threads The idea is that you eliminate work on your part, since the paradigm fits MOST code more easily. It reduces ...
What does performSelector do? What is the difference between creating a new NSThread and the performSelector method?
All of these perform the same task, that is make the doStuff method on anObject execute synchronously on the current thread: // 1 [a...
Delegate methods: UIPickerView
Providing Counts for the Picker View – numberOfComponentsInPickerView: – pickerView:numberOfRowsInComponent: Delegate - Setting the Dim...