snapshot | gallery app , written using web technologies | Camera library
kandi X-RAY | snapshot Summary
kandi X-RAY | snapshot Summary
Snapshot is a camera and gallery app, written using web technologies. It uses getUserMedia to capture the video stream from a webcam, canvas to capture a frame and put it into an image, and media queries and mozilla Brick for layout shennanigans.
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QUESTION
I'm using React and Next.js with Firestore. On one page I get data from Firebase with useEffect only once the page is rendered. But since the get is kind of costly (lots of read), I want to persist the data fetched even when the user navigates to other pages and back to this page, so that I don't need to fetch again. How can I do that? Thanks!
...ANSWER
Answered 2021-Jun-15 at 19:03There are multiple ways but one good way would be to use Context, create a data store context which would store your data and then you can read from it as a single source of truth.
QUESTION
I need a cloud function that triggers automatically once per day and query in my "users" collection where "watched" field is true and update all of them as false. I get "13:26 error Parsing error: Unexpected token MyFirstRef" this error in my terminal while deploying my function. I am not familiar with js so can anyone please correct function. Thanks.
...ANSWER
Answered 2021-Jun-15 at 16:13There are several points to correct in your code:
- You need to return a Promise when all the asynchronous job is completed. See this doc for more details.
- If you use the
await
keyword, you need to declare the functionasync
, see here. - A
QuerySnapshot
has aforEach()
method - You can get the
DocumentReference
of a doc from theQuerySnapshot
just by using theref
property.
The following should therefore do the trick:
QUESTION
I'm writing a Firebase function (Gist) which
Queries a realtime database ref (events) in the following fashion:
await admin.database().ref('/events_geo').once('value').then(snapshots => {
Iterates through all the events
snapshots.forEach(snapshot => {
Events are filtered by a criteria for further processing
Several queries are fired off towards realtime DB to get details related to the event
await database().ref("/ratings").orderByChild('fk_event').equalTo(snapshot.key).once('value').then(snapshots => {
Data is prepared for SendGrid and the processing is finished
All of the data processing works perfectly fine but I can't get the outer await (point 1 in my list) to wait for the inner awaits (queries towards realtime DB) and thus when SendGrid should be called the data is empty. The data arrives a little while later. Example output from Firebase function logs can be seen below:
10:54:12.642 AM Function execution started
10:54:13.945 AM There are no emails to be sent in afterEventHostMailGoodRating
10:54:14.048 AM There are no emails to be sent in afterEventHostMailBadRating
10:54:14.052 AM Function execution took 1412 ms, finished with status: 'ok'
10:54:14.148 AM
Super hyggelig aften :)
super oplevelse, ... long string generated
Gist showing the function in question
I'm probably mixing up my async/awaits because of the awaits inside the await. But I don't see how else the code could be written without splitting it out into many atomic pieces but that would still require stitching a bunch of awaits together and make it harder to read.
So, two questions in total. Can this code work and what would be the ideal way to handle this pattern of making further processing on top of data fetched from Realtime DB?
Best regards, Simon
...ANSWER
Answered 2021-Jun-15 at 11:20Your problem is that you use async
in a foreEach
loop here:
QUESTION
I'm using the plugin just_audio: ^0.7.4
from https://pub.dev/packages/just_audio. This plugin works with a system of playlist, we define a playlist this way (example with 3 songs):
ANSWER
Answered 2021-Jun-15 at 16:37Use map
instead of forEach
. forEach
returns a void
. Remove []
too otherwise you need to use the spread operator. Add async-await
wherever necessary because I can see listen
callback is async
.
QUESTION
I created a new Quarkus app using the following command:
...ANSWER
Answered 2021-Jun-15 at 15:18Please enable the quarkus-smallrye-jwt TRACE logging to see why the tokens are rejected.
And indeed, as you have also found out, https
protocol needs to be enabled in the native image, which can be done, as you have shown :-), by adding --enable-url-protocols=https
to the native profile's properties in pom.xml
.
This PR will ensure adding it manually won't be required.
thanks
QUESTION
My problem is that, I have a List of Icons(CustomWidgets) what are provide by an API. I need put this icons in my App but when the are 7 or more its looks like these:
I want to put the icons in separate rows. I've tried out a method which split the list in 2 and add it dynamically but didn't print anything because I'm using a FutureBuilder to print the Icons.
Here is the code:
...ANSWER
Answered 2021-Apr-16 at 01:34What I suggest is to use Wrap instead of Row in your case, widget will place in the 2nd row is not enough space
THERE IS THE WAY TO DO IT:
QUESTION
I'm trying to display data from firebase in an antd table using hooks. I created a mini version of this application with a simple bootstrap design pulling the data from firebase with:
...ANSWER
Answered 2021-Jun-15 at 14:46I have the dumb and answered my own question. I did not in fact try every variation with/without .columns
.
QUESTION
I'm doing a Group Chat with Firebase and currently I'm using a RecyclerView to display chat messages and I'm having a problem. When you open the app in the fragmented home and you go to chat activity and start chatting (adding elements to recycler view) all goes fine. But, when you go via the NavigationDrawer to another fragment and get back to the chat fragment using again this Navigation Drawer. When you add one element in the chat it appears all in the blank it just displays the last message. Anybody knows why does this happens?
Here I leave the RecyclerView Adapter Code:
...ANSWER
Answered 2021-Jun-15 at 13:55To solve your problem you can just remove the OnResume method because you are initializing the array every time you change between fragments and that is the problem.
QUESTION
I'm working on backup solutions for mongodb instances using percona backup manager.
When I do pbm list
if the PITR option is enabled, I get the output for snapshot and oplog slice ranges.
Is there a way to determine which oplog slice range belongs to which backup from the output programmatically so that I can associate an oplog slice range to a snapshot.
...ANSWER
Answered 2021-Jun-15 at 07:35Slice always starts =>(greater than equal) of full snapshot time and <(less than) next full snapshot.
for example 2020-12-14T14:26:20Z [complete: 2020-12-14T14:34:39] for this backup PITR(Slice) is 2020-12-14T14:26:40 - 2020-12-16T17:27:26
if you want to restore then first restore 2020-12-14T14:26:20Z [complete: 2020-12-14T14:34:39] then apply 2020-12-14T14:26:40 - 2020-12-16T17:27:26 this slice and you'll get data till 2020-12-16T17:27:26
You can get more details here https://www.percona.com/doc/percona-backup-mongodb/point-in-time-recovery.html
QUESTION
I am having trouble trying to iterate over a JSON array of objects from a remote URL using Flutter's FutureBuilder.
My goal is to:
- Fetch JSON data from an API
- Output the data into a 2 column gridview layout
The JSON data is an array of objects(or a List of Maps in dart), the objects have simple string data.
I know that I need to build a future to fetch the data from the API and decode the JSON, then I need to create a FutureBuilder to output the List data into my Gridview Builder. That is what I have tried to do in my code below.
...ANSWER
Answered 2021-Jun-14 at 20:57You have to pass the function like this
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