Explain enum?
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What is extension in swift?
What are the different control transfer statements used in swift?
What are the advantages of using swift for ios development?
What is enum in swift?
Consider the following code: var array1 = [1, 2, 3, 4, 5] var array2 = array1 array2.append(6) var len = array1.count What’s the value of the len variable, and why?
What is weak 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?
Can you explain completion handler?
Explain what is optional chaining?
Is singleton thread safe swift?
What is swift programming language?
Is c++ similar to swift?