Gets all Emoji Unicode code points from the latest Unicode source and prints them out (as Emoji). Also: Prints out all country flag emojis from "AA" to "ZZ"

emoji.swift

import Foundation
import XCPlayground

XCPSetExecutionShouldContinueIndefinitely()

func getAllEmojis(completion: String? -> ()) {
	let url = NSURL(string: "http://www.unicode.org/Public/UCD/latest/ucd/EmojiSources.txt")!
	NSURLSession.sharedSession().dataTaskWithURL(url) { data, response, error in
		guard let data = data where error == nil else {
			completion(nil)
			return
		}
		
		let string = NSString(data: data, encoding: NSASCIIStringEncoding) as! String
		let lines = string.componentsSeparatedByString("\n")
		
		var view = String.UnicodeScalarView()
		for line in lines where !line.hasPrefix("#") {
			let chars = line.characters
			guard let semicolonIndex = chars.indexOf(";") else { continue }
			
			let codePoints = String(chars[chars.startIndex..<semicolonIndex])
				.componentsSeparatedByString(" ")
				.flatMap { UInt32($0, radix: 16) }
				.map ( UnicodeScalar.init )
			
			view.extend(codePoints)
		}
		completion(String(view))
	}.resume()
}

getAllEmojis { print($0) }

func toCountryEmoji(string: String) -> String? {
	guard string.characters.count == 2 &&
		!string.characters.contains({ !("A"..."Z" ~= $0) }) else { return nil }
	
	var view = String.UnicodeScalarView()
	view.extend(string.unicodeScalars.map { UnicodeScalar($0.value + 127397) })
	return String(view)
}

let alphabet = (0..<26).map { String(UnicodeScalar($0 + 65)) }
print(alphabet.reduce("\t") { $0 + $1 + "\t" }, appendNewline: false)
for fst in alphabet {
	print("\n\(fst)\t", appendNewline: false)
	for snd in alphabet {
		print("\(toCountryEmoji(fst + snd)!)\t", appendNewline: false)
	}
}

print("\n")