Скачать или смотреть Swift Tutorial: optionals, unwrapping, binding

In this Swift tutorial video we'll look at optionals. We'll see how to use set them, how to unwrap them using nil coalescing, force unwrap, optional binding.

00:00 Introduction
00:30 Declaring optionals
02:53 Nil coalescing
03:26 Force unwrap
04:26 Optional binding
07:00 End

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