Here we have to classes GetDataAsyncService which waits for change in the store (and not executes the block of code under it until a change in the store ( this.getDataAsyncService.getAsyncData().subscribe((data)=>{ )}). When it is called from MainComponent it will get return of(propA); (from GetDataAsyncService) before the block of code in the listener is executed – because the listener is still
Tag: rxjs
How to Map/reduce a series of date bound values to a running total in JavaScript / RXJS?
I have an observable that emits measurement values with a date for a key. Something like: I need a 7 days running total and average for temp and hum. If I would have a a value for each week, I could write: However I need a running total where the values are accumulated like this: How would I design a
How Can I convert React.createclass to Class Component?
I have taken an example of dragging certain div in react js from here http://jsfiddle.net/Af9Jt/2/ Now it is in createClass and I need to convert it into class Draggable extends React.Component in …
RxJS: Modify Observable array before subscribing
I’m fetching data (students via getStudents()) from an API which returns an Observable. Within this result I need to get data from two different tables and combine the result. Here are my simplified …
How to access array elements in angular
From an API, I’m trying to get data using httpModule. Here is my code async searchMeaning(form: NgForm) { const post = { word: form.value.inputWord, language: form.value.language }…
how to run subscribe sequentially in observable
I want to run code sequentially but I was wondering how this works, for example, I have a method that includes two observable and some fields. I want to run the first observable completely then the …
RxJs: Abort a deferred and shared observable when all unsubscribe
I want to create an rxjs Observable that runs a long polling operation. Each iteration emits intermediate results. When isComplete returns true, the Observable completes. This function should behave …
How to show in template property from array of objects
I just try to show the value of a property in the template. But at the moment nothing is shown. So this is the component: export class ServerStatusComponent implements OnInit { snovieCollection: …
RXJS – return observable value when doing a map
I have an array of inputIds where I am doing a map that returns a name and value object. Inside the map, I am calling this.inputService.getInputFieldObject which returns an Observable…
Select ReplaySubject values emitted untill now
Is there reliable solution to get a snapshot of values currently buffered in ReplaySubject? I came up with something like this, but not sure how reliable this solution is: replaySubject.pipe( …