mutableなlistをfilteringする

mutable-filter.scala

def execute(list: Seq[Int] ) = {
  for(data <- list) yield cRepository.findById(data) map {
    case Some(ca) => ca.status match {
      case Stopped => list filterNot (_ == ca.id.get)
      case _ => list 
    }
    case None => list 
  }
  Future.successful(list)
}