privateuse.swift

#!/bin/swift 

// Print all the characters in the "Supplementary Private Use Area-B" block.

import Cocoa

for ch:UInt32 in 0x100000..<0x10FFFF {
    let arr = [ch]
    let array: [UInt32] = [CFSwapInt32(ch)]
    let data = array.withUnsafeBytes { (ptr) -> Data in
        return Data(ptr)
    }
    if let str = String(data: data, encoding: .utf32) {
        print("\(String(format: "%08X", ch)): \(str)")
    }
}