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name reactor-recipes
description Paste-ready Reactor snippets indexed by intent. Each recipe is a complete, compilable single-file program — copy, adjust, ship. Use these instead of re-deriving patterns from the narrative skill files.

Reactor Recipes

Each recipe is a self-contained .cs file that compiles via dotnet run. The recipes here use #:package Microsoft.UI.Reactor@0.0.0-local so they resolve through this clone's local-nupkgs/ feed (run mur pack-local once to populate it). For a NuGet consumer, replace 0.0.0-local with the released version you depend on. Drop the body into any Program.cs or class component.

Intent Recipe Hooks / APIs used
Add / remove items in a list list-add-delete.cs UseReducer, WithKey, Command
Sidebar navigation between pages sidebar-nav.cs UseNavigation, NavigationView, NavigationHost
Form with validation + submit form-with-validation.cs UseValidationContext, FormField, Validate.*
Fetch data, show loading / error async-fetch-list.cs UseResource, AsyncValue<T>.Match
Themed card with 4px grid spacing themed-card.cs Card(child) factory, Subtitle / Caption, Theme.*
Absolute positioning with Canvas canvas-positioning.cs Canvas, .Canvas(left, top), .CenterAt, shapes
Named-style buttons + InfoBar severity named-styles.cs .AccentButton(), .SubtleButton(), .TextLink(), .Informational() / .Success() / .Warning() / .Error()
Multi-select calendar calendar-multiselect.cs CalendarView, CalendarViewSelectionMode.Multiple, .SelectedDatesChanged

How to use a recipe

  1. Find the intent above and open the recipe file.
  2. The file is a complete, compilable program — read the whole thing, it's short.
  3. Copy the relevant pieces into your code. Don't grep src/Reactor/** to verify signatures; load skills/reactor.api.txt if you need to confirm one.

Adding a new recipe

A good recipe:

  • Compiles standalone (dotnet run works against the file).
  • Targets one intent — don't combine "form + nav + async" into a kitchen sink.
  • Stays under ~120 lines including imports and the ReactorApp.Run shell.
  • Uses real Reactor APIs only (no pseudocode, no placeholders).
  • Comments only the non-obvious — recipes are read for the code, not the prose.