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| // Singleton | |
| final class Singleton { | |
| static let shared = Singleton() | |
| private init() { // forbid object creation | |
| } | |
| } | |
| // Lazy | |
| lazy var players = { | |
| return ["A", "B"] | |
| }() | |
| // -OR- | |
| lazy var players = self.initialPlayers() | |
| func initialPlayers() -> [String] { | |
| return ["A", "B"] | |
| } | |
| // Enumeration | |
| let indexAndNum = [7, 8, 9, 10].enumerate().map { (index, element) in | |
| return "\(index): \(element)" | |
| } | |
| // Debug literals | |
| print(#file #line #column #function) |
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