Notes & experiments
The garden.
Things learned, ideas explored, and useful details kept along the way.
All notes
121–132 of 170
- Named regex groups in a Vietnamese text message
Extracting an amount and timestamp from a fixed four-line message format.
Tools & experiments - NScancode: a compact barcode-scanning experiment
A historical Android utility for QR codes and several one- and two-dimensional barcode formats.
Mobile & interfaces - Observing Flutter application lifecycle changes
An older WidgetsBindingObserver example and the distinction between app visibility and route visibility.
Mobile & interfaces - Observing Flutter rebuilds with setState
A nested-widget experiment that records build and lifecycle calls around several buttons.
Mobile & interfaces - Observing Flutter widget updates in lifecycle logs
An earlier parent-property experiment around initState, didUpdateWidget, build, and disposal.
Mobile & interfaces - Observing memory pressure in Flutter
An older binding observer and cache-clearing experiment, with its limits distinguished from an OOM diagnosis.
Mobile & interfaces - Opening a small URL set in Chrome on macOS
An earlier shell loop for launching several known destinations through the application launcher.
Tools & experiments - Paginate contract reads before the collection grows
A Solidity 0.8.3 experiment showing why a view call can still exceed execution or response limits.
Blockchain - Painting a rounded Flutter panel with an arrow
A small CustomPainter experiment that joins a rounded rectangle and a triangular pointer.
Mobile & interfaces - Pass RPC authentication through an older Web3 provider
Historical Web3 1.7.4 HTTP/WebSocket and Truffle fragments, with credential and provider-shape defects explicit.
Blockchain / Tools & experiments - PM2 cluster mode and the state between workers
An older ecosystem configuration for two Node workers, with readiness, shutdown, and shared-state assumptions.
Cloud & systems - PoA and PoS describe validator authority, not every consensus property
Compare membership, economic weight, governance, and finality without inferring them from a label alone.
Blockchain