OneValue | High Performance | Key Value Database library

I am trying to implement a switch statement alternative using a map object and the functions that are supposed to be called according to the condition are being called while I'm declaring the map

Here is a simplified code of what I implemented

I'm able to call a function using async when its returning just one value.

However, if the return is a Pair, I get - Destructuring declaration initializer of type Deferred must have a 'component1()' function

Am I missing something?

Here is a sample code:

Many years of using Scala and still I don't know the right way to interoperate with Java. :(

To be honest, this is not something that I'm doing every day, but sometimes there is no other option (today is Firestore Java libraries).

My question today is about the proper way to instantiate POJOs that can have null values. At the end of the day, I always use something like the def toJavaLong(l: Option[Long]): java.lang.Long = if (l.isEmpty) l.get else null, but pretty sure that there is a better and elegant way.

Please, could you show me the path? I expect something like orNull working out of the box, but it is never the case.

I'm using Scala 2.13, but feel free to show alternatives to Scala 3 as well.

In the next example, I explain the errors that I have using orNull and getOrElse:

Pojo:

I'm trying to write a calculator application with the help of javaFX and I've hit a roadblock. I'm trying to write a method that does the actual calculation, but I'm having some difficulty. The method I wrote is in the code below. It does the first calculation fine, but when you try to add on to the calculation everything goes wrong. I feel like I have gone about writing that completely wrong. Any help would be much appreciated.

The method in question:

I'm trying to group input range sliders or 'faders' together so that one 'Group Fader' can control two or more faders while keeping their respective relative values intact. So if fader One has a value of '50' and fader Two has a value of '75' When we group them together and increase the Group Fader by +20, faders one and two will move simultaneously and have their new new respective values 70 and 95.

I'm playing a shell game with variables and losing.. this is beyond my 'scope'=) hoping there's an easier way. Go easy on me this is my first question.

For example, could I iterate over Vuex data in a Vue file and choose the data needing updating, then pass the found data to an action, which commits it and then the mutation only makes the update?

The reason I'm unsure about it is because the typical format of a Vuex mutation contains the parameter for 'state', so I assume it needs to be used, and the only way to do that is either by doing all the looping inside the mutation, or to pass indexes to it to more quickly find the exact fields needing changing.

someVueFile.vue

I have the following database: