toUnicodeScalar() method for Character

toUnicodeScalar.swift

extension Character {
    func toUnicodeScalar() -> UnicodeScalar? {
        let s = String(self)
        if distance(s.unicodeScalars.startIndex, s.unicodeScalars.endIndex) > 1 {
            return nil
        }
        return s.unicodeScalars[s.unicodeScalars.startIndex]
    }
}
 
let char: Character = "A"
let dog: Character  = "🐶"
let flag: Character = "🇺🇸"
 
println(char.toUnicodeScalar()?.value)
// Optional(65)
println(dog.toUnicodeScalar()?.value)
// Optional(128054)
println(flag.toUnicodeScalar()?.value)
// nil