How to write a multiple line comment in swift?
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What is bridging header in swift?
What is a guard statement? What is the benefit of using guard statement in swift?
What is dictionary in swift?
Explain grand central dispatch (gdc).
Is swift open source?
How multiple line comment can be written in swift?
What collection types are available in swift?
What is an in-out parameter in swift?
What is lazy var in swift?
What is viewcontroller in swift?
What is unowned 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?