Скачать или смотреть Swift 2.0 Tutorial For Beginners | iOS App Development Tutorial

This videos explains Swift 2.0 programming basics.

Swift is a multi-paradigm, compiled programming language created by Apple Inc. for iOS, OS X, and watchOS development. Swift is designed to work with Apple's Cocoa and Cocoa Touch frameworks and the large body of existing Objective-C (Obj-C) code written for Apple products.

Swift supports the core concepts that made Objective-C flexible, notably dynamic dispatch, widespread late binding, extensible programming and similar features. These features also have well known performance and safety trade-offs, which Swift was designed to address. For safety, Swift introduced a system that helps address common programming errors like null pointers, as well as introducing syntactic sugar to avoid the pyramid of doom that can result. For performance issues, Apple has invested considerable effort in aggressive optimization that can flatten out method calls and accessory to eliminate this overhead. More fundamentally, Swift has added the concept of protocol extensibility, an extensibility system that can be applied to types, struts and classes. Apple promotes this as a real change in programming paradigms they refer to as "protocol-oriented programming".

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