I was trying to get Angular Fire to pull a list from 5 different entries in RTDB.

The data looks like this

{
"things": {
"one" : [],
"two" : [],
"three" : []
}
}

My regular firebase RTDB calls all contain a switchmap because I need the calls to be dynamic. No difference here.

    this.a_s.thing$ = this.a_s.x$.pipe(switchMap((x) => {
      return this.db.list('things/'+x).valueChanges();   
      }));

      this.a_s.thing$.subscribe({next:(value) => {}
});

How can I alter this code to ensure that the values contained in arr = [‘one’, ‘three’] all gets called and returned in a multi-array. say, instead of value[]. length = 1, I wanted the value array to return something like this value = [ [] , [] ].

Thanks.