How to capitalize the first letter of a string
Swift version: 5.2
If you want to capitalize the first letter of a string without touching the rest of the letters, add this simple extension of String:
extension String {
func capitalizingFirstLetter() -> String {
return prefix(1).capitalized + dropFirst()
}
mutating func capitalizeFirstLetter() {
self = self.capitalizingFirstLetter()
}
}Here’s an example to try it out:
let test = "the rain in Spain"
print(test.capitalizingFirstLetter())
SPONSORED Announcing NSSpain 2020: Remote Edition! An online, continuous conference for iOS developers. We’ll start on Thursday and finish on Friday, with talks, activities, and lots of fun for 36 hours, non-stop. Sound good? Join us!
Sponsor Hacking with Swift and reach the world's largest Swift community!
Available from iOS 8.0
Similar solutions…
- How to add drag and drop to your app
- Optional vs implicitly unwrapped optional: what’s the difference?
- 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.
