How to capitalize the first letter of a string
Swift version: 5.1
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 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 8.0
Similar solutions…
- How to capitalize words in a string using capitalized
- 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?
- How to remove the first or last item from an array
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
