Ever needed to create a reactive in-memory store for simple values?
To help with that, I created a simple wrapper class around BehaviorSubject (from the RxDart package).
Here's a (short) thread explaining how to use it. 🧵
In this example, we have a "fake" cart repository with async calls for reading and writing data.
This is useful when you don't have a backend (yet), but need something that the rest of the app can use.
As a bonus, it's easy to simulate delays, errors, etc.
Once you have this, the rest of the app can use the new Future and Stream-based APIs in the repository.
And later on, you can swap the "fake" repository for a real one (or even keep both for testing/production).
This is covered in more detail here:
Aside from BehaviorSubject, the RxDart package has many useful APIs for manipulating and combining streams.
You can learn more about it here:
https://pub.dev/packages/rxdart
Hope you found this useful.
For more Flutter tips like this, just follow me: @biz84.
Happy coding!
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