ifuse | A fuse filesystem to access the contents of iOS devices | File Utils library
kandi X-RAY | ifuse Summary
kandi X-RAY | ifuse Summary
A fuse filesystem to access the contents of iOS devices
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QUESTION
I am trying to listen for any notifications whenever someone has replied to a post that a user has commented on. Below is how my database structure looks.
- Posts: (Collection)
- Post 1: (Document)
- replies: [user2, user3]
- Replies: (Collection)
- Reply 1: (Document)
- ownerId: [user2]
- Reply 2: (Document)
- ownerId: [user3]
- Reply 1: (Document)
- Replies: (Collection)
- replies: [user2, user3]
- Post 1: (Document)
Currently my code has 2 snapshot listeners. The first one listens to the Posts collections, where a user is inside the 'replies' array. Then the second one listens to the Replies collection, where it returns all documents added that != the current user. When a new reply has been detected, it will set the Tab Bar item's badge.
This currently works right now, but I am curious if there is a better method of doing so.
...ANSWER
Answered 2021-Mar-24 at 14:23Your code does not have only two listeners, but one listener per post for which the user you are interested in has ever replied for. This will lead to terrible performances very soon and will potentially crash you app as Firestore has a limitation of 100 listeners per client.
I would advise to redesign your data model:
- Only one listener on posts that the user has ever replied to (your first listener)
- On each reply increment a reply counter in the post doc, this will trigger the snapshot above.
- Optimisation 1: on each action on a post you could set a field
lastactiontype
, which would have a specific valuereply
for replies only. This way the snapshot is only triggered on replies. - Optimisation 2: set a field
timestamp
on each action to the current time and only pull the last n (for instance 10) posts in your snapshots, this will limit the number of reads at load time. You will have to implement some special logic to handle the case when your app goes offline and back online and all n posts of the snapshot have changed. This is a must if your app is meant to scale (you dont want a snapshot with no limit on a collection with 100k docs...)
Example:
QUESTION
What I am trying to do is, add a button on my nav bar if the user is on a certain page (view).
I set my nav bar in my _Layout.cshtml
...ANSWER
Answered 2018-Apr-09 at 13:54In the Razor view, just access :
QUESTION
I am trying to get user type from the server and based on the role of the user display data. The http servise is running file and returning the desired data. I have two components. Login and Home components. After login a boolean variable is set to decide if the user is Admin or User. The login function is showing isAdmin variable true. But home component is showing it as false. I am using behaviorsubject and observable to sync the data.
Service ...ANSWER
Answered 2018-Mar-30 at 01:31I have found the solution to this problem. Do not add service as provider in the child components instead add provider in app.component.ts file which is a parent component. so instead of
QUESTION
I have created a bash script with some post installation command for the distro deepin. Now my problem, that I really don't know how to resolve as I'm a very newbie with bash scripting, is that after a command is been choosen and executed,there is a command that came back to the main menu of the script. But When I'm on the main menu, the script isn't able to execute another command. If I choose an option and try to execute, nothing appen. The script use dialog for the minimal interface. Can someone help me to understand what is the problem?
This is the code
...ANSWER
Answered 2017-May-19 at 17:05I would suggest refactoring your code so the loop is on the outside:
QUESTION
I have writed a simple bash script,with dialog, that I use for post-installation on deepin distro. The script have a simple menu created with dialog, now my problem is that I don't know how to repeat the menu after every command is completed.
This is part of the script:
...ANSWER
Answered 2017-May-18 at 22:44This simple test seems to work fine. Give it a try:
QUESTION
I am trying to save my js-application's state (one js object) as a json string to a file to be able to load it again later.
I am using this code
...ANSWER
Answered 2017-Feb-21 at 14:36If anyone else has this problem, here is my solution.
Although I did not find the actual problem, I solved it with a different approach:
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