Learn about one of the most important aspects of Swift development - optionals - through a fun analogy.
This is a companion discussion topic for the original entry at https://www.raywenderlich.com/3535-programming-in-swift/lessons/22
This is a companion discussion topic for the original entry at https://www.raywenderlich.com/3535-programming-in-swift/lessons/22
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Download materials is wrong
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Thanks for the heads up - we will fix this as soon as possible.