In just 24 lessons of one hour or less, Sams Teach Yourself Swift in 24 Hours helps you build next-generation OS X and iOS apps with Apple's new Swift programming language. This book's straightforward, step-by-step approach helps you quickly master Swift's core concepts, structure, and syntax and use Swift to write safe, powerful, modern code. In just a few hours you'll be applying advanced features such as extensions, closures, protocols, and generics. Every lesson builds on what you've already learned, giving you a rock-solid foundation for real-world success. Step-by-step instructions carefully walk you through the most common Swift development tasks. Practical, hands-on examples show you how to apply what you learn. Quizzes and exercises help ...