Why swift is faster?
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What is swift nsarray?
Is swift difficult to learn?
Explain grand central dispatch (gdc).
Is swift worth learning 2019?
What is encapsulation in swift?
Why we use lazy in swift?
Explain the difference between let and var in swift programming?
What are the characteristics of switch?
What is swift programming language?
What is property observer in swift?
How do you make a bridging header in swift?
Consider the following code: var defaults = NSUserDefaults.standardUserDefaults() var userPref = defaults.stringForKey("userPref")! printString(userPref) func printString(string: String) { println(string) } Where is the bug? What does this bug cause? What’s the proper way to fix it?