Introduction to Swift: Optional chaining

Learn how to simplify your code by calling multiple optional methods in a single line of code.

[twostraws]

Questions? Comments? Tweet me @twostraws.

[semilife]

Very clear explanation + example as always. Not sure why you don't have more subscribers + likes.

[cristianm.]

This makes perfect sense. Thanks for making this video.

[jurobebic]

Isn't it true that we are going to use optional chaining only on a type of data that has properties or multiple levels of properties such as class or structs? So why you didn't use struct or class? According to this video optional chaining is just putting the question mark on something that have optional value. Furthermore, nil coalescing is the same but it has 2 question marks.

[alias_onedepapel]

This worked better for me and got rid of all the warnings on Jetbrains AppCode


// Example of "optional chaining"
let album:String? = AlbumReleased(in: 1996)?.uppercased()
print("The album is: [ \(album ?? "?") ]")