Question

我有一个返回promise的函数：

Setup.zoomIn() : Promise<void> {...}

我想使用rxjs调用该函数5次，每次延迟1秒，如下所示：

let obs = Observable.create(observer => {
  let count = 0; 
  setTimeout(() => {
     Setup.zoomIn();
     count++;
     observer.next();          
  }, 1000);
  if (count === 5) {observer.complete();}
};

obs.subscribe(() =>
   console.log('zoomed out');
)};

仅在执行该操作时，我希望继续执行以执行进一步的步骤：

obs.toPromise.then(() => {
   // do some stuff here but only after zoom has been invoked 5 times
})

Answer 1

为zoomIns函数创建一个observable列表，并将它们与另一个Observable连接起来。

 select sum(value) as summed_value from series where time> now() - 2400h and time<now() - 1200h;

等待n个方法执行，然后在完成后继续

1 个答案: