My background is in C++/C and I am trying to learn scala. I am struggling to understand how a trait's toString method overrides case class derived from the trait. Surely the default case class's toString method should over ride the trait's? I am missing something obvious?
Code
trait Computer {
def ram: String
def hdd: String
def cpu: String
override def toString = "RAM= " + ram + ", HDD=" + hdd + ", CPU=" + cpu
}
private case class PC(ram: String, hdd: String, cpu: String) extends Computer
private case class Server(ram: String, hdd: String, cpu: String) extends Computer
object ComputerFactory {
def apply(compType: String, ram: String, hdd: String, cpu: String) = compType.toUpperCase match {
case "PC" => PC(ram, hdd, cpu)
case "SERVER" => Server(ram, hdd, cpu)
}
}
val pc = ComputerFactory("pc", "2 GB", "500 GB", "2.4 GHz");
val server = ComputerFactory("server", "16 GB", "1 TB", "2.9 GHz");
println("Factory PC Config::" + pc);
println("Factory Server Config::" + server);