Explain the adapter and memento pattern?

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How to post an http request with a json body in swift?

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What is protocol in swift?

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What is bridging header in swift?

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What is nil-coalescing operator?

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Swift defines the AnyObject type alias to represent instances of any reference type, and it’s internally defined as a protocol. Consider the following code: var array = [AnyObject]() struct Test {} array.append(Test()) This code generates a compilation error, with the following error message: Type 'Test' does not conform to protocol 'AnyObject' The failure is obvious because a struct is a value and not a reference type, and as such it doesn’t implement and cannot be cast to the AnyObject protocol. Now consider the following code: var array = [AnyObject]() array.append(1) array.append(2.0) array.append("3") array.append([4, 5, 6]) array.append([7: "7", 8: "8"]) struct Test {} array.append(Test()) The array array is filled in with values of type respectively int, double, string, array and dictionary. All of them are value types and not reference types, and in all cases no error is reported by the compiler. Why?

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What are the type of integers does swift have?

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What is the use of break statement in swift language?

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What is the significance of “?” In swift?

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What is the difference between swift and ‘objective-c’ language?

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Explain some design patterns which we normally use during the app development.

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What is tuple? How to create a tuple in swift?

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