rent | React-Native Mobile Application POC for Media app

Should I return the resource to pool at the end of business logic?

Yes.

You can use Java's try-with-resources feature as well.

You need to aggregate by the correct columns:

That code is run, because you are calling a method as a value, so what is the value of that array index ? The resolution of the method, hence the method runs. What you have to do is a closure to prevent that.

So, this code:

Try this function -

The problem with your query is you are using two $cond keys, within the in field, using only one and use $or operator. Another thing is within aggregation pipeline use $eq for equality matching, and lastly don't miss the else clause in $cond.

This query works:

check if condition and push $and object to filter array and after all conditions put $and with filter array in $match stage.

You can do something like this

Instead of assigning the changed string to the variable that was previously the list, just assign it to the element.

So in code:

Instead of

The array operations can either add an item that isn't in the array yet (FieldValue.arrayUnion) or remove an item that is in the array already (FieldValue.arrayRemove ). There is no way to atomically update an existing item, by its index or otherwise.

So that means the only option is to:

1. Read the document into your application code.
2. Get the array from it.
3. Update the array in your application.
4. Write back the entire array to the database.

Also see:

• How can I update map data that's in a array in firebase? (Flutter)
• Flutter: Update specific index in list (Firestore)
• how to edit an array element present in firestore