1. Int to String (Swift 4.2 to Swift 5.1) update  // Swift 4.2 and old String(describing: Int()) // OR // "\(Int)" // Swift 5.1 Update String(Int()) // OR // "\(Int)" Source: https://www.hackingwithswift.com/example-code/language/how-to-convert-an-int-to-a-string 2. Ternary Conditional Operator // Use If Else if question { answer1 } else { answer2 } // Use Tenary hasTrue ? answer1 : answer2 source: https://docs.swift.org/swift-book/LanguageGuide/BasicOperators.html#ID71 3. Tabbar...