小编Mos*_*tia的帖子

我正在使用 angular/rxjs6 构建一个简单的秒表，我可以启动计时器，但无法暂停/恢复它。

  source: Observable<number>;
  subscribe: Subscription;

  start() {
    this.source = timer(0, 1000);
    this.subscribe = this.source
      .subscribe(number => {
        this.toSeconds = number % 60;
        this.toMinutes = Math.floor(number / 60);
        this.toHours = Math.floor(number / (60 * 60));

        this.seconds = (this.toSeconds < 10 ? '0' : '') + this.toSeconds;
        this.minutes = (this.toMinutes < 10 ? '0' : '') + this.toMinutes;
        this.hours = (this.toHours < 10 ? '0' : '') + this.toHours;
    });
  }

  pause() {
    this.subscribe.unsubscribe(); // not working
  }

经过大量搜索后，我发现我应该使用switchMap …

我想转换这个多维数组：

array(
[0] => array (
   "interest_income-bank" => "520.541"
   "total_interest_expense" => "145.791"
   "net_interest_income" => "434.937"
   "loan_loss_provision" => "135.664"
   .
   .
)
[1] => array (
   "interest_income-bank" => "617.894"
   "total_interest_expense" => "205.508"
   "net_interest_income" => "506.510"
   "loan_loss_provision" => "120.586"
   .
   .    
)
)

到这样的数组：

array(
[interest_income-bank] => array (
   "0" => "520.541"
   "1" => "617.894"
   .
   .
)
[total_interest_expense] => array (
   "1" => "145.791"
   "2" => "205.508"
   .
   .
)
)

尝试了很多但没有运气:(

任何帮助将非常感激！