TypeCasting in RxJS Operators

I’m trying to perform typecasting in the following scenario: of(1, 2, 3, "not a number") .pipe( filter((val) => typeof val === "number"), map((number) => number * 2) ) .subscribe(); Inside the map operator the number parameter is of type number, because the array values were filtered. However, typescript is not able to pick this up… Read More TypeCasting in RxJS Operators

How to send Time zone Offset in request header in Angular?

I would like to send Time zone Offset in request header. But I have not find any way to do it. My code is given below: import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from ‘@angular/common/http’; import { Observable } from ‘rxjs’; import { Injectable } from ‘@angular/core’; import { SessionProvider } from ‘./session.provider’; @Injectable({ providedIn:… Read More How to send Time zone Offset in request header in Angular?

How to send multiple long-running server requests sequentially?

The following code should execute multiple long-running HTTP requests sequentially: First HTTP request is started First HTTP request is finished Second HTTP request is started Second HTTP request is finished Third HTTP request is started … Some of the requests can take up to 30 seconds, so the code needs to make sure that second… Read More How to send multiple long-running server requests sequentially?

Mapping after concatmap

I have the following observable: existingFormData$: Observable<any> = this.activatedRoute.params.pipe( map(params => params[‘id’]), filter(id => !!id), switchMap((id: string) => this.httpService.getUniversityApplicationsDetail(id)), concatMap((detail: any) => this.httpService.getUniversityApplicationsFeesOptions(detail.meta.university.id)), tap((detail: any) => { console.log(detail) }) ); I’m looking up the id contained in the address bar, calling up the 1st api, getting an id value from the 1st api and sending… Read More Mapping after concatmap

Two component.ts files point towards same component.html file

I’m trying to split my functions inside my first.component.ts file to another second.component.ts file make it more readable. I am pointing to the same component.html file from both ts files like this: first.component.ts @Component({ selector: ‘first-component’, templateUrl: ‘./main.component.html’, styleUrls: [‘./main.component.scss’], }) second.component.ts @Component({ selector: ‘second-component’, templateUrl: ‘./main.component.html’, styleUrls: [‘./main.component.scss’], }) By doing this, I get… Read More Two component.ts files point towards same component.html file