Swift : Factory Pattern

Factory pattern can come in handy when you want to reduce the dependency of a class on other classes. On the other hand, it encapsulates the object creation process and users can simply pass in parameters to a generic factory class without knowing how the objects are actually being created. Also it gives you a clean code.

Let’s begin by creating a protocol (You can achieve the same with a super class too but I like protocol as it enforces certain rules to the classes that are confirming). If you don’t know protocol, then please go refer my article on the topic.

protocol Human {
    var name : String {get set}
    func run()
    func eat()
    func sleep()
}

Since we have our protocol ready let’s create two classes named Soldier and Civilian.

class Soldier{
}
class Civilian{
}

Now it’s time to conform to the protocol Human to these classes and implement the methods.

class Soldier : Human{
    var name: String
    init(SoldierName soldiername : String) {
        self.name = soldiername
    }
    func run() {
        print("soldier \(name) is running")…