Flutter
One notes client, built three times. Pick hybrid, layer-first, or feature-first, then instrument it.
The book keeps the dependency rule the same in every layout. This course builds that rule as a Flutter notes client, three times, so you can diff the trees. Each app saves a note and lists notes. A late chapter in each track adds talaria_flutter.
The long walkthrough is Shelf. The Flutter half is the hybrid layout: shared domain and application, feature screens, and a ui/ tile with no Riverpod. These three tracks stay the comparison.
Providers are written by hand in Riverpod 3. flutter test is the whole check, with no code generator for providers. Entities are plain Dart. Beamer is the router adapter: a location builds the page and reports the screen. Notes are kept in memory, where an API client would sit, so the tests do not need a backend. main still wraps an HTTP client when TALARIA_API_KEY is set. The notes repository does not call it. That client is the hook a real API call would use.
Pick a track
| Hybrid | Layer-first | Feature-first | |
|---|---|---|---|
| Where a feature lives | Domain, application, and data stay horizontal. The screen is presentation/features/notes/ |
The name notes repeats inside each layer, including presentation/notes/ |
features/notes/ holds every layer |
| Presentational tile | ui/note_tile.dart, no Riverpod |
Beside the page in presentation/notes/ |
Beside the page inside the feature |
| App | examples/flutter/hybrid |
examples/flutter/layer_first |
examples/flutter/feature_first |
- Hybrid — shared inner layers, a feature screen, and a
ui/tile with no Riverpod. This is the tree to copy when screens change and the domain stays shared. - Layer-first — top folders are the layers.
- Feature-first — one folder is the whole client feature.
Read one track to the end. Then open the other two trees and diff save_note_use_case.dart. The method asks Note.create for a note and NoteRepository.save to store it, then returns the note it built. Note.create trims the title and the body. A blank title throws ValidationFailure with the message Title is required, and the page shows that string under the form. The book calls the same failure InvalidTitle. The path of the file is the variable.