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Use forkJoin to subscribe to more than one observable simultaneously
forkJoin(
this.service.service1(), this.service.service2(), this.service.service3()
).subscribe((res) => {
this.funcA(res[0], res[1], res[2]);
});Another example is:
forkJoin(
this.logic10Service.getLogic10(this.item_id),
this.http.get<ILogic10BaseCategory[]>(this.catsUrl_part1 + this.item_id + this.CatsUrl_part2)
).subscribe((res) => {
console.log("- forkJoin returned " + res[0] + ", and " + res[1]);
//can start interacting with res[0] and res[1]
})For more, see https://stackoverflow.com/questions/52317494/is-it-good-way-to-call-subscribe-inside-subscribe