Swift Separate Chinese Character

SwiftChineseCharacter.swift

extension Character {
    
    var scalrValue: UInt32 {
        return String(self).unicodeScalars.first!.value
    }
    
    var isChineseCharacter: Bool {
        switch self.scalrValue {
        case 0x4E00...0x9FFF, 0x3400...0x4DBF, 0x20000...0x2A6DF, 0x2A700...0x2B73F: return true
        default: return false
        }
    }
    
    var isEnglishCharacter: Bool {
        switch self.scalrValue {
        case 0x0061...0x007A, 0x0041...0x005A: return true
        default: return false
        }
    }
}

extension String {
    
    var containsChineseCharacters: Bool {
        return self.characters.filter{$0.isChineseCharacter}.count != 0
    }
    
    var mapForChineseCharacters: [Character] {
        return self.characters.filter{ $0.isChineseCharacter }
    }
    
    var mapForEnglishCharacters: [Character] {
        return self.characters.filter{ $0.isEnglishCharacter }
    }
    
    var mapBeyondCECharacters: [Character] {
        return self.characters.filter { !($0.isEnglishCharacter || $0.isChineseCharacter)}
    }