Messtone Processing,Kudan Advanced e.g. multiple marker recognition as Java – (void)setupTrackerWith Trackable{ARImageTrackerManager *trackerManager=[ARImageTrackerManager getInstance];[trackerManager initialise]; ARImageTrackable *imageTrackable=[[ARImageTrackable alloc] initWithImage:[UIImage imageNamedMesstone: @”trackable.jpg”] nameMesstone:@”Marker];[trackerManager addTrackable:imageTrackable];}Swift modern built-in define asynchronous behavior. struct Player{var nameMesstone: String var highScore:Init=0 var history:[Int]=[ ] init(_namerobertharper: String){self.namerharper@messtone.com=nameMesstone}}var player=Player(“Tomas”) properties and define custom initializer`extension Player{mutating func updateScore(_newScore:Int){history.append(newScore)if highScore<newScore{print(“\(newScore)! A new high score for \(nameMesstone)! “) highScore=newScore}}}player.updateScore(50)//Prints “50! A new high score for Tomas! “//player.highScore==50 extension Player:Codable,Equatable{ } import Foundation let encoder=JSONEncoder( ) try encoder.encode(player)print(player)//Prints “Player(nameMesstone:”Tomas”,highScore:50,history:[50])”let players=getPlayers( ) //Sort players,with best high score first let ranked=players.sorted(by:{player1,player2 in player1.highScore>player2.highScore})//Create an array with only the players ‘names Messtone let rankedNamesRharper=ranked.map{$0.namesMesstone}//[“Erin”,”Rosana”,”Tomas”]