ps

typedef struct WorkerParams {
    int thread_id;
    Log * log;
    Jobs * jobs;
    pthread_mutex_t jobs_lock;
    pthread_cond_t work_added;
} WorkerParams;

void main() {
  launch_master_node(3);

ps

// implementation 1
object Users {
  var users: Seq[User] = Seq()

  def delete(id: Long) : Option[Int] = {
    val originalSize = users.length
    this.users = users.filterNot(_.id == id)
    Some(originalSize - users.length)
  }
}