swift emoji列表

string extension添加方法，hex string转成emoji
stride 由emoji区间生成器，生成数组

stride(from: 0x1F600, to: 0x1F64F, by: 1).forEach { (num) in
            let hex = String(format: "%02X", num)
            print(hex)
            print(hex.toEmoji())
        }

extension String {
    func toEmoji() -> String {
        //实例化字符扫描
        let scanner = Scanner(string: self)
        
        //从str中扫描出十六进制的数值
        var result: UInt32 = 0
        scanner.scanHexInt32(&result)
        
        //使用Uint32的数值，生成一个UTF8的字符
        let c = Character(UnicodeScalar(result)!)
        
        return String(c)
    }
}

1F600
😀
1F601
😁
1F602
😂
1F603
😃
1F604
😄
1F605
😅
1F606
😆