How to trim whitespace in a string
Swift version: 5.1
It's not hard to trim whitespace from a string in Swift, but the syntax is a little wordy – or "self-descriptive" if you're feeling optimistic. You need to use the trimmingCharacters(in:) method and provide a list of the characters you want to trim. If you're just using whitespace (tabs, spaces and new lines) you can use the predefined whitespacesAndNewlines list of characters, like this:
let str = " Taylor Swift "
let trimmed = str.trimmingCharacters(in: .whitespacesAndNewlines)That will set trimmed to be "Taylor Swift”.
SAVE 20% ON iOS CONF SG The largest iOS conference in Southeast Asia is back in Singapore for the 5th time in January 2020, now with two days of workshops plus two days of talks on SwiftUI, Combine, GraphQL, and more! Save a massive 20% on your tickets by clicking on this link.
Available from iOS 2.0
Similar solutions…
- Optional vs implicitly unwrapped optional: what’s the difference?
- How to add drag and drop to your app
- How to convert dates and times to a string using DateFormatter
- How to handle unknown properties and methods using @dynamicMemberLookup
- How to calculate the ROT13 of a string
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
