Question

So, I just started learning Scala today, and have been doing fairly well, but I’ve run into a wall, with this problem…

I need to do this in Scala, but am having trouble sorting it out:

final Filter<GameObject> filter = new Filter<GameObject>() {
    public boolean accept(GameObject o) {
        ...
    }
};

ATM I have, but it won’t even compile:

val filter = new Filter[GameObject] {
    override def accept(o: GameObject) {
        ...
    }
}

Thanks in advance.

Edit:

Here is the entire object so far:

object Targeter extends LoopTask {

  val filter = new Filter[GameObject] {
    override def accept(o: GameObject) = { true }
  }

  //  Overriding a method in the LoopTask class
  override def loop() = {
    100
  }
}

Answer 1

I think you missed return type:

override def accept(o: GameObject) = {...}

or

override def accept(o: GameObject): Boolean = {...}

These two variants are the same (assuming that you actually return some boolean in the body of this method).

---

If you define accept method like this:

override def accept(o: GameObject) {...}

then it’s the same as:

override def accept(o: GameObject): Unit = {...}

And Unit is equivalent of void in java.