public static CompositeDisposable KeepCollectionInSync2 <T, T2>(this IReactiveList <T> list, IList <T2> destination,
Func <T, bool> filter = null) where T : T2
{
if (list == null)
{
throw new ArgumentNullException(nameof(list));
}
if (destination == null)
{
throw new ArgumentNullException(nameof(destination));
}
lock (list) {
list.SyncCollection2Locked(destination, filter);
return(list.TrackChanges(x => destination.Add(x), x => destination.Remove(x),
reset => reset.SyncCollection2Locked(destination), filter));
}
}