swift 密码由6-16数字和字母组合组成

class func isPassword(pasword : String) -> Bool {

        let pwd =  "^(?![0-9]+$)(?![a-zA-Z]+$)[0-9A-Za-z]{6,16}$"

        let regextestpwd = NSPredicate(format: "SELF MATCHES %@",pwd)

        if (regextestpwd.evaluate(with: pasword) == true) {

            return true

        }else{

            return false

        }

    }

转载于:https://www.cnblogs.com/qizhuo/p/7904262.html