我试图将SELECT w.week, COUNT(*) AS total
FROM (SELECT generate_series(min(DATE_TRUNC('week', created_at)),
max(DATE_TRUNC('week', created_at)),
interval '7 day'
) as week
FROM reviews
) w LEFT JOIN
"reviews"
ON DATE_TRUNC('week', created_at) = w.week
GROUP BY w.week
ORDER BY w.week;
的示例从Rx v1x转换为v2x。我有以下内容，但是当我调用PublishSubject时，dispose()继续触发（正如基于示例所预期的那样），但输出也会继续打印到标准输出。原始示例向onNext()说明，但unsubscribe()：
更新了完整代码以回复以下评论
Disposable如何从主题中取消订阅观察者（例如，对于v2.x，v1x的this example是如何更改的？）