private static ActiveListJoinerToReadOnlyList <int, int, int> CreateHasLeft(ActiveListJoinBehaviour joinBehaviour, out ObservableList <int> right)
{
right = new ObservableList <int>();
var joiner = new ActiveListJoiner <int, int, int>(joinBehaviour, (l, r) => l.GetOrElse(0) + r.GetOrElse(0), null, null);
var result = new ActiveListJoinerToReadOnlyList <int, int, int>(joiner);
joiner.SetBoth(1, right);
return(result);
}
public ActiveListJoinerToReadOnlyList(ActiveListJoiner <TLeft, TRight, TResult> joiner)
{
_joiner = joiner;
joiner.AddRequested += Add;
joiner.RemoveRequested += Remove;
joiner.ReplaceRequested += Replace;
joiner.ReplaceRangeRequested += ReplaceRange;
joiner.MoveRequested += Move;
joiner.MoveRangeRequested += MoveRange;
joiner.ResetRequested += Reset;
}
