## Deinitialization Deinitializers are only available on class types. ~~~ deinit { // perform the deinitialization } ~~~ ~~~ struct Bank { static var coinsInBank = 10_000 static func vendCoins(var numberOfCoinsToVend: Int) -> Int { numberOfCoinsToVend = min(numberOfCoinsToVend, coinsInBank) coinsInBank -= numberOfCoinsToVend return numberOfCoinsToVend } static func receiveCoins(coins: Int) { coinsInBank += coins } } lass Player { var coinsInPurse: Int init(coins: Int) { coinsInPurse = Bank.vendCoins(coins) } func winCoins(coins: Int) { coinsInPurse += Bank.vendCoins(coins) } deinit { Bank.receiveCoins(coinsInPurse) } } var playerOne: Player? = Player(coins: 100) println("A new player has joined the game with \(playerOne!.coinsInPurse) coins") // prints "A new player has joined the game with 100 coins" println("There are now \(Bank.coinsInBank) coins left in the bank") // prints "There are now 9900 coins left in the bank” playerOne!.winCoins(2_000) println("PlayerOne won 2000 coins & now has \(playerOne!.coinsInPurse) coins") // prints "PlayerOne won 2000 coins & now has 2100 coins" println("The bank now only has \(Bank.coinsInBank) coins left") // prints "The bank now only has 7900 coins left” playerOne = nil println("PlayerOne has left the game") // prints "PlayerOne has left the game" println("The bank now has \(Bank.coinsInBank) coins") // prints "The bank now has 10000 coins" ~~~