example use of .switchMap that streams value to multiple inner observables using static .combineLatest method

rxjs-switchMap-combineLatest-specimen.ts

    this.symbolSearchService.getSymbolData('xl')
      .switchMap(stock => {
        this.stock = stock;
        return Observable.combineLatest(
          this.symbolSearchService.getResearchReportData(stock),
          this.symbolSearchService.getPGRDataAndContextSummary(stock)
        )})
      .subscribe(
        [report, summary] => {
          this.researchReport = report;
          this.contextSummary = summary;
        },
        err => this.sharedService.handleError
      );

helped me a lot as well!! thanks!