Single-Responsability

SingleResponsability.swift

class Employee {
    let name: String
    let emailAddress: EmailAddress
    
    init(name: String, emailAddress: EmailAddress) {
        self.name = name
        self.emailAddress = emailAddress
    }
    
    func getInfo() -> String {
        return "Employee named \(name) has email \(emailAddress.email)"
    }
}

class EmailAddress {
    let email: String
    
    init(email: String) {
        self.email = email
    }
    
    func validate() -> Boo l{
        // Code that validates email
    }
}