I've been looking to understand those 3:   Subject, Behavior subject and Replay subject. I would like to use them and know when and why, what are the benefits of using them and although I've read the documentation, watched tutorials and sea...
I am working on angular2 app in which I am making a rest call through HTTp as below:  login(email, password) {     let headers = new Headers();     headers.append('Content-Type', 'application/x-www-form-urlencoded');     let options =...
My use case is:   User requests asset from our API which fails because of JWT expiring (passed as an httpOnly cookie) - API returns a 401 status code. We go and authenticate them (without the user doing anything) again using a refresh_token to retrie...
I have a series of filter functions that allow a user to click on a series of filters in order to filter data displaying in a grid view. I have the filters working using observables when I build them using an individual function for each filter. We a...
I am using 'angular2-virtual-scroll' to implement load on demand. The items used to be driven by observable's using the async pipe triggered by the parent component. Now i am trying to call my service from the child. The call is successfu...
I have this structor  app/   --pages/   ----pages.component.ts    --channel/   ----shared/   ------assignPlaylist.modal.ts   Inside the pages.component.ts, I have a variable called playlist  export class PagesComponent {    @Input() platform: Platfor...
What we want to do is call an endpoint from a url which returns 2 variables which can be used on multiple sections on the site. Although we are using the http call and subscribing to it, in order to speed up the site we only want to make the api call...
Is there a way to compare the current length of two observables?  EDIT: It is to compare the arrays withing the observables.  I want to compare all the elements count withing them(See example below).  At the point I am trying to do it, they are alrea...
I need to keep track for the changes on the latest id on the store, so I need to get the value before the change and after the change.   this.store.select(currentSearchSelector).subscribe(search => {       this.currentSearchId = search.id;       c...
I'm having trouble assigning the ID attribute to some HTML buttons.  categories.service.ts:  getCategories(): Observable<Category[]> {     let headers = new Headers({ 'Authorization': this.authenticationService.token });     let opt...

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