Testing UserDefaults set(nil, forKey:) and removeObject(forKey:) to see size difference in the plist store

TestDefaults.swift

import UIKit

var greeting = "Hello, playground"
let key = "Test"
let value = "test".data(using: .utf8)!
let defaults = UserDefaults.standard

func printUD() {
    print("UserDefaults after modification:\n")
    defaults.dictionaryRepresentation().forEach { print("\($0): \($1)\n") }
    print("-------------\n\n")
}

//defaults.set(value, forKey: key); printUD()
//defaults.set(nil, forKey: key); printUD()
//defaults.set(value, forKey: key); printUD()
defaults.removeObject(forKey: key); printUD()

// Use this to find the path of the plist
//var path: [AnyObject] = NSSearchPathForDirectoriesInDomains(.libraryDirectory, .userDomainMask, true) as [AnyObject]
//let folder: String = path[0] as! String
//NSLog("Your NSUserDefaults are stored in this folder: %@/Preferences", folder)