↓ができてほしくて let aToZ: ClosedRange<Unicode.Scalar> = "A" ... "Z" for c in aToZ { print(c) } ↓みたいな extension 書いた。これって標準で付いてたらダメ？

extension Unicode.Scalar: Strideable { public func distance(to other: Unicode.Scalar) -> Int { Int(other.value) - Int(self.value) } public func advanced(by n: Int) -> Unicode.Scalar { Unicode.Scalar(UInt32(Int(self.value) + n))! } }