RPallas92

    
    //The fmap function is only applied on Success values.
    
    let success: Validation<String, Int> = Validation.Success(1)
    success.fmap{ $0 + 1 }
    // ==> Validation.Success(2)
    
    let failure: Validation<String, Int> = Validation.Failure("error")
    failure.fmap{$0 + 1}
    // ==> Validation.Failure("error")

RPallas92

    //Validate min length
    func minLength(_ value:String, min:Int, fieldName:String) -> Validation<[String], String>{
        if(value.characters.count < min){
            return Validation.Failure(["\(fieldName) must have more than \(min) characters"])
        } else {
            return Validation.Success(value)
        }
    }
    
    //Validate match a regular expression

RPallas92

    //Validate min length
    func minLength(_ value:String, min:Int, fieldName:String) -> Validation<[String], String>{
        if(value.characters.count < min){
            return Validation.Failure(["\(fieldName) must have more than \(min) characters"])
        } else {
            return Validation.Success(value)
        }
    }
    
    //Validate match a regular expression

RPallas92

    
func validatePassword(username: String, password:String) -> [String]{
        var errors:[String] = []
        
        if password.characters.count < 8 {
            errors.append("Password must have more than 8 characters.")
        }
        
        if (password.range(of:"[\\W]", options: .regularExpression) == nil){
            errors.append("Password must contain a special character.")

RPallas92

    
    //Check if the password is long enough
    func isPasswordLongEnough(_ password:String) -> Validation<[String], String> {
        if password.characters.count < 8 {
            return Validation.Failure(["Password must have more than 8 characters."])
        } else {
            return Validation.Success(password)
        }
    }
    

RPallas92

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