NEW: Learn to build the incredible iOS 15 Weather app today! >>

Strings are collections again

Available from Swift 4.0

Paul Hudson      @twostraws

This is a small change, but one guaranteed to make a lot of people happy: strings are collections again. This means you can reverse them, loop over them character-by-character, map() and flatMap() them, and more. For example:

let quote = "It is a truth universally acknowledged that new Swift versions bring new features."
let reversed = quote.reversed()

for letter in quote {
    print(letter)
}

This change was introduced as part of a broad set of amendments called the String Manifesto.

Hacking with Swift is sponsored by Essential Developer

SPONSORED Learn the most up-to-date techniques and strategies for testing new and legacy Swift code in this free practical course for iOS devs who want to become complete Senior iOS Developers.

Learn more

Sponsor Hacking with Swift and reach the world's largest Swift community!

Other changes in Swift 4.0…

Download all Swift 4.0 changes as a playground Link to Swift 4.0 changes

Browse changes in all Swift versions

 
Unknown user

You are not logged in

Log in or create account
 

Link copied to your pasteboard.