An intentionally slow Flutter app.
Performance optimization is a gnarly topic. Performance issues seldom exist in isolation, and they often only manifest in really complex (and closed-source) apps.
I (filiph@) made this app to address this. It's full of performance issues we see in real-world apps, but without the cruft of full apps, and isolated from each other.
It has been a great resource to me and others when teaching about Flutter performance.
The app makes appearance in the following videos:
The app is structured as one big PageView that goes from left to right. Every 3rd page
has a performance issue. The other two are there to cleanly isolate one performance
issue from another (unless I don't want to isolate).
Pages are color-coded, so that there's a simple correspondence between what you see and the code.
For example, the code to the blue page is found in blue.dart.