What is nil-coalescing operator?
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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 the full form of swift code?
What is category in swift?
What is nsdictionary in swift?
What is closure in swift?
Mention what are the type of integers does Swift have?
What is a protocol in swift?
Explain the adapter and memento pattern?
What is a guard statement? What is the benefit of using guard statement in swift?
What is lazy var in swift?
The String struct doesn’t provide a count or length property or method to count the number of characters it contains. Instead a global countElements<T>() function is available. When applied to strings, what’s the complexity of the countElements function: O(1) O(n) and why?
Is swift a language or framework?