Array deep copy in Swift

ArrayDeepCopy.swift

//Protocal that copyable class should conform
protocol Copying {
    init(original: Self)
}

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

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

//Simple Swift class that uses the Copying protocol
final class MyClass: Copying {
    let id: Int
    let name: String
    
    init(id: Int, name: String) {
        self.id = id
        self.name = name
    }
    
    required init(original: MyClass) {
        id = original.id
        name = original.name
    }
}

//Array cloning
let objects = [MyClass]()
//fill objects array with elements
let clonedObjects = objects.clone()

@javadba from my testing and with the needs I had at the time, it didn't impact the performance of the app at all. But tbh, I didn't stress-test it.

@seyoung-hyun pretty sorry for the very late reply 😅 it's MIT License.