Introduction to Swift: Optionals

Описание к видео Introduction to Swift: Optionals

This video explains optionals in three different ways. Once you understand them, skip ahead to 12:43!

Learn how to Swift deals with missing data, including unwrapping using “if let” and “guard let”.

This is part of the Hacking with Swift tutorial series, which teaches you to build iOS apps using Swift for free – see https://www.hackingwithswift.com for more information.

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