What is “defer”?
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What is the use of break statement in swift language?
How can you write a comment in swift?
How long does it take to learn swift?
Is apple using swift?
Is singleton thread safe swift?
How to declare an empty dictionary in swift?
What is static let in swift?
What is mutating keyword in swift?
Does swift support multiple inheritance?
How can you write multiple line comment?
What is de-initializer and how it is written 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?