Transform UIModel object to the Model using protocols

ModelFromUIModel.swift

import Foundation

// MARK: Model

protocol ModelType {
    init(value: Int)
}

class Model: ModelType {
    var value: Int
    
    required init(value: Int) {
        self.value = value
    }
}

// MARK: View Model

protocol UIModelType {
    associatedtype CType
    func model() -> CType
}

class UIModel: UIModelType {
    var strValue: String
    
    init(strValue: String) {
        self.strValue = strValue
    }
    
    func model() -> Model {
        return Model(value: (strValue as NSString).integerValue)
    }
}

extension Array where Element: UIModelType  {
    func models() -> [Element.CType] {
        return self.map{ $0.model() }
    }
}

// MARK: Main

let uiModels = [UIModel(strValue: "32"), UIModel(strValue: "45")]
let models = uiModels.models()
print(models.map { $0.value })