I am looking to dynamically adjust the delay of an interval, but my knowledge of Angular is limited which is hindering my progress in this task.
Below is the current code snippet I am working with:
timeDiffs : number[] = [] <== this array contains time measurements in milliseconds
this.interval$ = interval(this.timeDiffs[this.intervalCounter++]).subscribe(() => {
//function call
this.intervalCounter++; // move to next index for next iteration with a different time
})
To achieve this task, you can utilize the concatMap() and timer() functions. The concatMap() function ensures that delays are executed in the correct sequence, waiting for each one to complete before moving on to the next. On the other hand, the timer() function emits a value after a specified delay and then completes.
import { from, concatMap, timer } from 'rxjs';
const timeDiffs = [1000, 1000, 3000, 1000];
from(timeDiffs)
.pipe(
concatMap(delay => timer(delay)),
)
.subscribe(console.log)
Check out the demonstration: https://stackblitz.com/edit/rxjs-nqyxqk?devtoolsheight=60&file=index.ts
Try utilizing the BehaviorSubject class
const myValue$ = new BehaviorSubject(1); //initial value can be customized
this.myValue$.pipe(
switchMap(val => interval(125 * val),
//implement other operators as needed
takeWhile(),...
tap(),...
map()...
).subscribe();
this.myValue$.next(newValue); //update the variable with a new value
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