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This crash means code touched a controller after dispose() ran. Guard async callbacks with a mounted check, and never dispose a controller you do not own.

For a large .NET 11 / C# 14 solution, Claude Code wins on agent quality and runs anywhere a terminal does. Cursor wins if your team wants a GUI and tab completion, as long as you can live without C# Dev Kit. Aider wins on cost and openness.

.NET 11 Preview 4 teaches double, float, and Half to format with the X specifier and parse with NumberStyles.HexFloat, producing the same IEEE-754 hex text as C printf("%a").

Your fire-and-forget task captured a request-scoped DbContext that the DI scope already disposed. Resolve a fresh context inside the task with IServiceScopeFactory or IDbContextFactory.

This error means you mutated state while Flutter was building. Move the setState out of build, or defer it with addPostFrameCallback. Here is why it happens and the right fix.

Render loading, data, and error UI from a single AsyncValue in Riverpod 3. Use AsyncNotifier and AsyncValue.guard for mutations, .when() and switch pattern matching for the UI, keep previous data on refresh, and migrate the legacy StateNotifier pattern. Tested on flutter_riverpod 3.x, Flutter 3.44, Dart 3.x.

EF Core 11 Preview 4 lets the dotnet ef tool read default option values from a .config/dotnet-ef.json file, so split solutions no longer force you to pass --project and --startup-project on every command.

After an MSIX update, Claude Desktop on Windows reads claude_desktop_config.json from a virtualized path while Edit Config opens the old %APPDATA% one. Edit the file under AppData\Local\Packages\Claude_pzs8sxrjxfjjc and restart.

AnimationController, TextEditingController, and ScrollController hold resources that Dart's GC cannot reclaim until you dispose them. Here is the correct pattern, the ordering rules, and how to catch leaks before they ship.

A request can fail with no connectivity, a timeout, a DNS failure, a 500, or malformed JSON, and each needs a different response. Here is how to catch the right exceptions, classify them, retry safely, and show a UI a user can act on.