What is the inferred type of x? let x = ["a", "b", "c"]

How would you call a function that throws errors and also returns a value?

How do you designated a failable initializer?

In the function below, what are this and toThat examples of? func add(this x: Int, toThat y: Int)->{}

What is wrong with this code? for (key, value) in [1: "one", 2: "two"]{print(key, value)}

Which of these choices is associated with unit testing?

In Apple Swift, a class:

In Apple Swift, which of the following symbols is used to write an implicitly unwrapped optional?

ln Apple Swift, which of the following references should be used when it is known that the reference will never be nil during its lifetime?

Output ? enum Abc [ case Mark case John case Andrew case Lucy

In Apple Swift, if we don't want to provide an external name for the second parameter of a method, then which of the following symbols can be used to override the default behavior?