Swift Optionals Tutorial - Unwrapping - Guard, If Let, Chaining, Force

The next topic in my series on iOS Interview questions explains unwrapping Optionals in Swift. This iOS interview question was asked in most almost all interviews. In this Swift tutorial I'll explain if let, guard statements, optional chaining, and force unwrapping, using Xcode.

iOS Dev Courses - https://seanallen.teachable.com/

This is part of a series of videos about iOS interview questions in Swift. Check out the overview where I list and briefly discuss all the topics that are in this series:
   • iOS Interview Questions and Answers 2...  

Optional Chaining Apple Doc
https://developer.apple.com/library/c...

Xcode Project Source Code:
https://www.dropbox.com/sh/rnx5gabo6s...

iOS Dev Courses:
https://seanallen.teachable.com/

Twitter:
Sean Allen -   / seanallen_dev  

Hired.com:
https://hired.com/x/1n01g

Book and learning recommendations that help out the channel if you decide to purchase (Affiliate Links):

Paul Hudson's Hacking With Swift:
https://gumroad.com/a/762098803

Donny Wals - Combine:
https://gumroad.com/a/909014131

Mark Moeyken’s SwiftUI Books:
www.bigmountainstudio.com/swiftui-views-book/fzc51

Objc.io Books (Thinking in SwiftUI & Advanced Swift):
https://gumroad.com/a/656585843

Ray Wenderlich Books:
https://store.raywenderlich.com/a/208...

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