How to remove diacritics from a String in Swift?

Question

How to remove diacritics (or accents) from a String (like say change "één" to "een") in Swift? Do I have to go back to NSString or can it be done within Swift?

Answer 1

You can operate directly on a Swift String (if "Foundation" is imported):

let foo = "één"
let bar = foo.stringByFoldingWithOptions(.DiacriticInsensitiveSearch, locale: NSLocale.currentLocale())
print(bar) // een

Swift 3:

let foo = "één"
let bar = foo.folding(options: .diacriticInsensitive, locale: .current)
print(bar) // een