Swift version: 5.1
Swift provides the
ListFormatter class as a built-in way of joining lists of strings into a single string so that the last item has “and” before it, like a natural English string. So, rather than just getting “A, B, C” you actually get “A, B and C” – it’s much more suitable for user interfaces.
Here’s some example code:
let names = ["Ash", "Brock", "Misty"] let joined1 = ListFormatter.localizedString(byJoining: names) print(joined1)
That will print “Ash, Brock and Misty”. (No, there’s no way of asking it for the Oxford comma, so “Ash, Brock, and Misty” isn’t possible.)
If you want to join the strings without using the “and” at the end, you should just use the
joined(separator:) method, like this:
let joined2 = names.joined(separator: ", ") print(joined2)
That will print “Ash, Brock, Misty”.
SPONSORED Instabug helps you identify and resolve severe crashes quickly. You can retrace in-app events and know exactly which line of code caused the crash along with environment details, network logs, repro steps, and the session profiler. Ask more questions or keep users up-to-date with in-app replies straight from your dashboard. Instabug takes data privacy seriously, so no one sees your data but you! See more detailed features comparison and try Instabug's crash reporting SDK for free.
The biggest ever Hacking with Swift sale is now on, letting you save 50% on all books and bundles. Learn something new with Swift and enjoy great savings while the sale lasts!
Available from iOS 13.0
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.