forkjoin | A work stealing fork-join parallelism library for Rust | Architecture library
kandi X-RAY | forkjoin Summary
kandi X-RAY | forkjoin Summary
A work stealing fork-join parallelism library. Inspired by the blog post Data Parallelism in Rust and implemented as part of the master's thesis Parallelization in Rust with fork-join and friends. Repository hosted at github.com/faern/forkjoin.
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QUESTION
I have a self updating list of orders that is scrollable. This is the parent component, where list is updated on a timer of 2 minutes, setup like so:
...ANSWER
Answered 2021-Jun-11 at 13:10You could try using element.scrollTop to save the position of the scrollbar and then use the saved value to set the scrollTop property to where it was when the timed function is called.
(https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollTop?retiredLocale=it - https://www.javascripttutorial.net/dom/css/get-and-set-scroll-position-of-an-element/)
QUESTION
I'm trying to convert my Observable of an Object with DocumentReferences to an Observable of my entire Object.
My Firestore query returns an Observable of QuestDocument, which looks as follows (stripped of primitive types):
ANSWER
Answered 2021-Jun-10 at 10:56You are not using the forkJoin operator correctly.
An observable that is complete will no longer emits data. Take it like a closed pipe.
ForkJoin will wait that all steams are completed (closed) before emitting one single data.
If you're fetching your data using this.afs.collection(...).doc(...).valueChanges(), these observables stay active. They will emit each time the data is updated in firestore.
To complete them, use a take(1) or first() (they will emit once then complete), or use combineLatest() to combine active streams and keep your data updated in real time (don't forget to unsubscribe onDestroy to prevent any memory leak).
Here's an example with completed streams:
QUESTION
I've got a request that returns something like this get('/product-list)
...ANSWER
Answered 2021-Jun-07 at 15:31QUESTION
I have a question regarding multiple http calls and catching errors when they happen and be able to read them on a parent component. I need to know which calls failed so that I can retry them on another method but if I can't see them on component level It is somehow impossibe for me to know which call I need to retry
// COMPONENT CALL
...ANSWER
Answered 2021-May-31 at 16:28Check out forkJoin here. I think for you it is better to pass in an object with key value pairs so you can make better identification.
The way you have it, the order will be the same when subscribed for every call (in essence it will still be in [1, 2, 3, 4, 5]) when subscribed.
Your catchError catches errors for the API call and returns a successful error object for whoever subscribes.
Something like this should get you started:
QUESTION
I am trying to build a component which basically does two things:
- Split the file into smaller blobs
- Upload the file parts, once all the parts are uploaded then make an API call and mark the item as upload completed.
So far, I have been able to create an end-to-end poc, but I am trying to improve on my code to upload only n chunks at a time then proceed to next batch and wait until all chunks are uploaded.
For the splitting logic I am using, bufferCount + forkJoin but I want to be able to call an API after all chunks are complete. Instead, it gets triggered after each batch completes.
- The next batch should not get triggered if the previous batch fails.
ANSWER
Answered 2021-May-29 at 14:58Instead, it gets triggered after each batch completes.
I think for this you could use the toArray() operator:
QUESTION
I am trying to do image upload by the queue. Currently, I need to upload the images by fives
For example, if I have 10 images, I need to upload 5 images and when these 5 will be uploaded I need to do another request for the remaining 5 images.
After a lot of searches and testing a lot of RXJS operators/functions I could find this solution by (concat - RXJS function), and (scan and last - RXJS operators):
in index.html
...ANSWER
Answered 2021-May-27 at 14:07Here's how I would do it while leaning a bit more into RxJS and immutable objects/arrays.
Might need some tweaking as I didn't really test this. It's basically the same as what you're doing.
QUESTION
private Payload(): asset {
const payload = { //pay load }
return payload;
}
public listofnumbers() {
number = [1,2,3];
number.forEach(element => {
this.service(element);
});
}
private service(number) {
this.service.getNumbers(this.Payload())
.subscribe((res) => {
if (res.isSuccess && res.data) {
this.function();
}
})
}
function () { alert("fghj"); }
ANSWER
Answered 2021-May-25 at 07:18@Sanjana, the "key" of forkjoin is "join" observables, so "trying" should return an observable
QUESTION
I have following code
...ANSWER
Answered 2021-May-19 at 11:36The two calls are actually not equivalent. switchMap passes to its projection function two arguments. The value from source and an internal index. You can see it here: https://github.com/ReactiveX/rxjs/blob/master/src/internal/operators/switchMap.ts#L106
So using the following:
QUESTION
In ngOnInit() I have a forEach method that generates some FormGroups with some FormControls. Then, I created an array containing the statusChanges of each FormGroup.
ANSWER
Answered 2021-May-17 at 19:49It is not necessary to do it with such an overloaded approach. You can achieve this pretty straight foreward as the [disabled] directive of your button fires repeatedly. It will notice a change within millis. Do it this way:
TS
QUESTION
I would like to make a request, that depends on another request, which is within a forkJoin. How do I make the request cleanly, without just calling it within the subscribe of the forkJoin?
Code looks a little bit like this right now: So the inner request in dependent on students in this case. I can't do it, before I don't have received my students from the backend.
...ANSWER
Answered 2021-May-14 at 12:35Why not just pipe the second request with the request you want to make like this:
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