Class_vs_Static.swift

import Foundation

// Class vs Static
class A {
    class func doSomething() {
        print("do something")
    }
    
    // Static functions can't be overridden
    static func createSomething() {
        print("create something")
    }
}

class B : A {
    override class func doSomething() {
        print("doing something")
    }
}