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Swift in 24 Hours, Sams Teach Yourself by BJ Miller

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Hour 19. Working with Optional Chaining

What You’ll Learn in This Hour:

Image What optional chaining is

Image When to use optional chaining

Image How to chain properties, methods, and subscripts

Image How to verify optional chaining success or failure

In this hour we cover optional chaining. This concept is new to most programmers, as it only makes sense in the context ...

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