Category : rxjs

Let’s assume that there is a service will be used for http request calls.And two different components(could be more than two) which will send same request by using same observables via this service.After getting result that should be assigned to global variable(Components have not relationship like parent-child or child-parent).Below I wrote same code block for ..

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Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. Check the render method of App. Nose por que cuando escribo la funcion en App en indez.js me marca ese Error App.js import Curso from "./curso"; const App = () => ( <Fragment> <div className="main-banner ..

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I have a json file like below: { "users": [ { "id": "person1", "information": [ { "first_name": "Mike", "last_name": "Patty", "address": ["address1","address2"] }, { "first_name": "Mike2", "last_name": "Patty2", "address": ["address1","address2"] } ] }, { "id": "person2", "information": [ { "first_name": "Tom", "last_name": "Jerry", "address": ["address1","address2"] }, { "first_name": "Tom2", "last_name": "Jerry2", "address": ["address1","address2"] } ] ..

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I need help to create a RXJS stream which does the following. Input: Keyboard inputevent a to z Emit value if: Character has NOT been used before Character has been used before but it is more than 5 seconds ago. else discard value Marble diagram (- is 1 second): Input: [aaa–b–b–aa–a-c–> Output: [a—-b—–a—–c–> Source: Ask ..

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I have two Observables: 1: counts up a value and completes. (important: May complete before ever emitting any value!) 2: does stuff until 1 COMPLETES (not emits) How would you implement this in RxJS? My first try is using last() like: firstObservable.pipe( takeUntil(secondObservable.pipe(last())) ).subscribe(count =>{ //do stuff with count }); But the prroblem arises when ..

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Here is my app.component.ts (excerpt) – export class AppComponent { _subscription; constructor(private themeService: ThemeService){ themeService.getDefaultTheme(); this._subscription = themeService.themeChange.subscribe((value) => { //Some code }); } } and theme.service.ts (excerpt) – export class ThemeService { themeChange: Subject<boolean> = new Subject<boolean>(); getDefaultTheme(){ this.changeTheme(true); } changeTheme(val:boolean){ //Some code this.themeChange.next(val); } } As app-root is my root component, the constructor ..

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