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()

Nice gist.

indeed!

Thanks thats great!

Thanks for sharing.

Thanks for your code!

Can you let me know which license is used for distribution of this code?
I'd like to use this code for a commercial app so I need to check the license.

Happy coding! :)

thanks for sharing this!

Is append() going to be slow since it is invoked once per element in the source array?

@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.