Swift Password Strength Checker

gistfile1.txt

enum PasswordStrength: Int {
    case None
    case Weak
    case Moderate
    case Strong

    static func checkStrength(password: String) -> PasswordStrength {
        var len: Int = countElements(password)
        var strength: Int = 0
        
        switch len {
        case 0:
            return .None
        case 1...4:
            strength++
        case 5...8:
            strength += 2
        default:
            strength += 3
        }
        
        // Upper case, Lower case, Number & Symbols
        let patterns = ["^(?=.*[A-Z]).*$", "^(?=.*[a-z]).*$", "^(?=.*[0-9]).*$", "^(?=.*[!@#%&-_=:;\"'<>,`~\\*\\?\\+\\[\\]\\(\\)\\{\\}\\^\\$\\|\\\\\\.\\/]).*$"]
        
        for pattern in patterns {
            if (password =~ pattern).boolValue {
                strength++
            }
        }
        
        switch strength {
        case 0:
            return .None
        case 1...3:
            return .Weak
        case 4...6:
            return .Moderate
        default:
            return .Strong
        }
    }
}

How is

if (password =~ pattern).boolValue {
strength++
}

written in swift 2.0?

@herrstypa =~ looks like overloaded operator

Change line 26 to:

    if (password.rangeOfString(pattern, options: .RegularExpressionSearch) != nil) {
        strength++
    }

Voilà.