findを命令型と関数型で比較

gistfile1.scala

  case class Car(name: String, color: String)

  def find(name: String, cars: List[Car]): Option[Car] = {
    for (car <- cars) {
      if (car.name == name) {
        return Some(car)
      }
    }
    None
  }

  @Test
  def test {
    var cars = List(Car("レガシー", "シルバー"), Car("インプレッサ", "ホワイト"), Car("フォレスター", "ブラック"))
    val result = find("インプレッサ", cars)
    println(result)

    val result2 = cars.find(_.name == "インプレッサ")
    println(result2)
  }