public IObservable <IChangeSet <TObject, TKey> > Run()
{
return(Observable.Create <IChangeSet <TObject, TKey> >(observer =>
{
lock (_locker)
if (++_refCount == 1)
{
_list = _source.AsObservableList();
}
var subscriber = _list.Or().SubscribeSafe(observer);
return Disposable.Create(() =>
{
subscriber.Dispose();
IDisposable listToDispose = null;
lock (_locker)
if (--_refCount == 0)
{
listToDispose = _list;
_list = null;
}
listToDispose?.Dispose();
});
}));
}