How to capitalize the first letter of a string
Swift version: 5.6
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())
SAVE 50% To celebrate Black Friday, all our books and bundles are half price, so you can take your Swift knowledge further without spending big! Get the Swift Power Pack to build your iOS career faster, get the Swift Platform Pack to builds apps for macOS, watchOS, and beyond, or get the Swift Plus Pack to learn advanced design patterns, testing skills, and more.
Sponsor Hacking with Swift and reach the world's largest Swift community!
Available from iOS 8.0
Similar solutions…
- How to capitalize words in a string using capitalized
- What calls the first async function?
- How to find the index of the first matching array element
- How to find the first matching element in an array
- What is the first responder?
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
