Materi Scala Belajar bersama di Ansvia HQ pertemuan ke 4

Hello.scala

package com.ansvia.hello

/**
 * Copyright (C) 2011-2012 Ansvia Inc.
 * User: robin
 * Date: 7/18/12
 * Time: 7:40 PM
 *
 */

trait Motor {
  var status:String = "unknown"

  def run() {
    this.status = "running"
  }

  def stop() {
    this.status = "stop"
  }

  def getStatus = this.toString + ": " + this.status

  override def toString:String = super.toString
}

trait Nos {
  def startNos()
}

trait VelgRacing {
  def merekVelg:String = "unknown"
}

class Yamaha extends Motor {
  override def toString = "Yamaha"
}

class Honda extends Motor {
  override def toString = "Honda"
}

class Mobil {
  override def toString = "Mobil"
}

abstract class MotorBalap(velgTitle:String)
    extends Motor with Nos with VelgRacing {
  override def merekVelg = velgTitle
}

class MioBalap extends MotorBalap("Ruji") {
  def startNos() {
    this.status = "Running with NOS"
  }

  override def toString = "Yamaha Mio"

  override def merekVelg = "Venom"
}


class Daftar[T] {
  private var data = List[T]()
  def add(o:T){
    data :+= o
  }
  def remove(o:T){
    data = data.filterNot(_ == o)
  }
  def printDaftar(){
    println("Daftar kita:")
    data foreach {
      motor =>
        println(" * " + motor)
    }
  }
}


object BengkelMotor {
  def testRun(motor:Motor){
    println("testing " + motor)

    motor.run()

    motor match {
      case motorBalap:MotorBalap if motor.getStatus == motor.toString + ": running" =>
        motorBalap.startNos()
        //println(motorBalap.getStatus)
      case _ =>

    }

    println(motor.getStatus)
  }
}

object Hello {
  def main(args:Array[String]){

    val yamaha = new Yamaha
    val honda = new Honda
    val miobalap = new MioBalap
//
//    BengkelMotor.testRun(yamaha)
//    BengkelMotor.testRun(honda)
//    BengkelMotor.testRun(miobalap)

    val daftarMotor = new Daftar[Motor]
    daftarMotor.add(yamaha)
    daftarMotor.add(honda)
    daftarMotor.add(miobalap)
    daftarMotor.printDaftar()
    daftarMotor.remove(honda)
    daftarMotor.printDaftar()

    val mobil = new Mobil

    val daftarMobil = new Daftar[Mobil]

    daftarMobil.add(mobil)
    daftarMobil.printDaftar()

    //
//    val yamaha = new Yamaha
//    println(yamaha)
//    println(yamaha.getStatus)
//    yamaha.run()
//    println(yamaha.getStatus)
//    yamaha.stop()
//    println(yamaha.getStatus)
//
//    val honda = new Honda
//    println(honda)
//    println(honda.getStatus)
//    honda.run()
//    println(honda.getStatus)
//    honda.stop()
//    println(honda.getStatus)
//


  }
}