remember | Progressive web app using geolocation and device orientation | Mobile Application library

Well if you literally want to save it, you must store it is something like a viewmodel where it remains preserved. The remembered stuff only lasts till the Composable gets destroyed. If you navigate to another screen, the previous Composables are destroyed and along with them, the scroll state

Is there a way to automate this for example with some decorator kind of thing?

I'm not aware of a way of doing that currently.

I once developed a method trait to remove the implicit *%_ from the signature of a method. In the hopes I could simplify dispatching on multi methods that take many different (combinations) of named arguments.

It did not end well. I don't recall exactly why anymore, but I decided to postpone trying to do that until after the RakuAST branch has landed.

I've worked with Compose since the early alpha stages and became quickly disappointed with Google's lame attempt at providing a more modern approach to navigating a single-activity app. When you consider that Android's view-based system was entirely replaced with the declaration approach that Compose uses, you have to seriously wonder why they would stick with a navigation controller that doesn't allow you pass objects from one screen to another. There was also the issue that adding animation when transitioning from one screen to another was an afterthought. There is an add-on that supports animation transitions.

But perhaps the worst thing about Compose was its lack of handling device configuration changes. Under the older view-based system, you defined your layouts in xml files and placed these in resource folders that had qualifiers in the folder name that would aid Android in picking the correct layout based on things like screen density, orientation, screen size, etc. That went out the window with Compose. Eventually Google did add APIs to handle composables that need to be selected based on screen sizes and densities. But ultimately, you end up writing this decision logic within your composable and your code starts to look like spaghetti. Google's Android team completely forgot about the most basic "Separation of Concerns" when they chose to mix UI layouts with the logic that determines which layout gets selected. Designing your composables is one thing and how they get selected is another. Don't mix the two. Your composables become increasingly less reusable when you integrate those APIs. The original developers of Android (who weren't from Google) knew well enough to have the operating system manage the layout selection based upon changes to device configurations.

I chose to create my own framework that handles navigation and manages composables in almost an identical way that the view-based system works. It also remedies the issue of not being able to pass objects from screen to screen. If you are interested, you can check it out at:

https://github.com/JohannBlake/Jetmagic

So to answer you question about whether Compose Navigation is good for navigating, I would have to say no. I have worked with it and have found it severely lacking. If you want to be just-another-run-of-the-mill-Android-developer, then use Compose Navigation. But if you want to chart your own path and liberate yourself from Google's poor design practices, then use Jetmagic or even better, create your own navigation framework. It isn't that hard.

AFAIK there is no difference here. It's just a coincidence that both constructs are doing the same thing here in this context. But, there are differences!

The biggest one is that derivedStateOf is not composable and it does no caching on it's own (remember does). So derivedStateOf is meant for long running calculations that have to be run only if key changes. Or it can be used to merge multiple states that are not in composable (in custom class for example).

I think the exact explanation is blurred for "outsiders", we need some input from some compose team member here :). My source for the above is this one thread on slack and my own experiments

EDIT:

Today i learned another derivedStateOf usage, very important one. It can be used to limit recomposition count when using some very frequently used value for calculation.

Example:

It is the expected behaviour. You are constructing two separate app bars for both the screens so they are bound to flash. This is not the correct way. The correct way would be to actually put the scaffold in your main activity and place the NavHost as it's content. If you wish to modify the app bar, create variables to hold state. Then modify them from the Composables. Ideally, store then in a viewmodel. That is how it is done in compose. Through variables.

Thanks

You could use django's receiver annotation.

For example, if you want to detect any call of the save method, you could do:

I don't know if it may be the right approach for you, but what I did is downgrade my version of MySQL Workbench to 6.3 and uninstalled the previous version and it will then give you the "if available" option for SSL. As you are right, it is not the case for previous versions, however you do lose a few more modern features in the process.

https://downloads.mysql.com/archives/workbench/

Another solution as well is to connect to connect to the database in 6.3 and since the configuration saves are in same location, upgrade to 8.0 where it will still have the old configuration file and won't use SSL due to backwards compatibility.

Most of Compose controls have interactionSource parameter for this purpose. Here's how you can use it:

Instead of defining multi-line lambdas (which python doesn't allow), you could define multiple lambdas in a list and then use all lambdas in the list as required: