I want to use combineLatest to get a bunch of result. Then one of result is passed as input parameter to do another subscribe call.
combineLatest([first, second, third, four, five]).pipe(take(1)).
subscribe(([a, b, c, d, e]) => {
this.showData1(a);
this.showData2(b);
this.showData3(c);
this.showData4(d);
if(e > 8) {
this.myService.updateStatus(e).subscribe(
result => this.setupStatus(result)
);
}
});
The logic is from the 5 results, 4 of them are used for rendering screen. The last one I use it to do a subscribe, its returning result will used some where.
But I feel that it is not right because sometimes it seems this.setupStatus(result) is not running inside the combineLatest. Memory leak?
hard to diagnose why it wouldn't be running without knowing more about the observables. but I'd do it something like this to avoid nested subscribes and make this a little easier to diagnose / manage:
combineLatest([first, second, third, four, five]).pipe(
take(1),
switchMap(([a, b, c, d, e]) => {
this.showData1(a);
this.showData2(b);
this.showData3(c);
this.showData4(d);
return this.myService.updateStatus(e);
})
).subscribe(result => this.setupStatus(result));
possibly structuring a little differently depending on when exactly I want things to happen.