swift-字符串常用修正

//是否含表情符 

func stringWithoutEmoji() -> String {

        var array = [Int]()

        var i = 0

        for scalar in unicodeScalars {

            switch scalar.value {

            case

                0x00A0...0x00AF,

                0x2030...0x204F,

                0x2120...0x213F,

                0x2190...0x21AF,

                0x2310...0x329F,

                0x1F000...0x1F9CF:

                array.append(i)

            default:

                print(i)

            }

            i += 1

        }

        

        var result: String = String(stringLiteral: self)

        for index in array {

            result.remove(at: self.index(self.startIndex, offsetBy: index))

        }

        return result

    }

    

    // 是否整形

    func isIntNumber() -> Bool {

        let rule = "^-?\\d+$"

        let pred = NSPredicate(format:"SELF MATCHES %@", rule)

        let isMatch = pred.evaluate(with: self)

        return isMatch

    }

    

    // 是否浮点型

    func isFloatNumber() -> Bool {

        let rule = "^(-?\\d+)(\\.\\d+)?$"

        let pred = NSPredicate(format:"SELF MATCHES %@", rule)

        let isMatch = pred.evaluate(with: self)

        return isMatch

    }

    

    // 纯数字

    func isNumber() -> Bool {

        let rule = "^[0-9]+$"

        let pred = NSPredicate(format:"SELF MATCHES %@", rule)

        let isMatch = pred.evaluate(with: self)

        return isMatch

    }

    

    // 纯字母

    func isLetter() -> Bool {

        let rule = "^[A-Za-z]+$"

        let pred = NSPredicate(format: "SELF MATCHES %@", rule)

        let isMatch = pred.evaluate(with: self)

        return isMatch

    }

    

    // 字母或数字：

    func isNumberOrLetter() -> Bool {

        let rule = "^[A-Za-z0-9]+$"

        let pred = NSPredicate(format: "SELF MATCHES %@", rule)

        let isMatch = pred.evaluate(with: self)

        return isMatch

    }

    

    // 纯汉字

    func isChiness() -> Bool {

        let rule = "[\u{4e00}-\u{9fa5}]+$"

        let pred = NSPredicate(format:"SELF MATCHES %@",rule)

        let isMatch = pred.evaluate(with: self)

        return isMatch

    }

    

    // 手机号

    func isPhoneNumber() -> Bool {

        let rule = "^0{0,1}(13[0-9]|15[3-9]|15[0-2]|18[0-9]|17[5-8]|14[0-9]|170|171|173)[0-9]{8}$"

        let pred = NSPredicate(format: "SELF MATCHES %@", rule)

        let isMatch = pred.evaluate(with: self)

        return isMatch

    }