iOS 检测String是否含有emoji

在网上看了很多方案，都是判断unicode值的范围，但是个人使用下来总有漏掉的emoji

for scalar in unicodeScalars {
            switch scalar.value {
              case 0x1F600...0x1F64F, // Emoticons
              0x1F300...0x1F5FF, // Misc Symbols and Pictographs
              0x1F680...0x1F6FF, // Transport and Map
              0x1F1E6...0x1F1FF, // Regional country flags
              0x2600...0x26FF, // Misc symbols
              0x2700...0x27BF, // Dingbats
              0xE0020...0xE007F, // Tags
              0xFE00...0xFE0F, // Variation Selectors
              0x1F900...0x1F9FF, // Supplemental Symbols and Pictographs
              127000...127600, // Various asian characters
              65024...65039, // Variation selector
              9100...9300, // Misc items
              8400...8447: // Combining Diacritical Marks for Symbols
                return true
              default:
                continue
            }
        }

查阅了官方文档后，使用如下方法不会有漏掉emoji的情况：

func isHaveEmjoy() -> Bool {
        for scalar in unicodeScalars {
            let result = scalar.properties.isEmoji
            if result && (scalar.value < 48 || scalar.value > 57) {
                // 48 - 56 是数字 1 - 9
                // 57 是数字 0
                return true
            }
            continue
        }
        return false
    }