How do I make a exact duplicate copy of an array?

Question

How would I make an exact duplicate of an array?

I am having hard time finding information about duplicating an array in Swift.

I tried using .copy()

Answer 1

For normal objects what can be done is to implement a protocol that supports copying, and make the object class implements this protocol like this:

protocol Copying {
    init(original: Self)
}

extension Copying {
    func copy() -> Self {
        return Self.init(original: self)
    }
}

And then the Array extension for cloning:

extension Array where Element: Copying {
    func clone() -> Array {
        var copiedArray = Array()
        for element in self {
            copiedArray.append(element.copy())
        }
        return copiedArray
    }
}

and that is pretty much it, to view code and a sample check this gist