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functional-programming-snake/scala/life.html
T
Lucas WintherandClaude Fable 5.2 edd57f0148 feat(course): audit fixes and twelve extensions (Modules 7b, 12, 13)
Audit pass:
- Frame rule counts frames since the last move, so every step lasts
  exactly movesEvery(score) frames, also right after a speed-up
- clampTime + MAX_GAP_MS: a hidden tab no longer replays the whole gap
- Pong Restart keeps held keys
- Fact corrections (mulberry32 output coverage, Haskell IO, uniform)
- New fixture cases from a mutation analysis

Extensions (all three tracks, shared fixtures, course text):
- Turn queue (Exercise 10.6), persisted high score (10.7),
  replay viewer (10.8), play() end-to-end helper (9.5)
- Optional State (4.7) and optional Module 7b, stack-safe IO
- Module 12, property-based testing with generators, shrinking,
  invariants and a model-based oracle
- Module 13, Conway's Life with a Click event
- JS type checking via jsconfig, JSDoc and types.d.ts
- Maintainer tools: scripts/mutate.mjs, scripts/typecheck-js.sh,
  Playwright end-to-end suite (e2e/, scripts/e2e.sh)

Docs: docs/contract.md is the canonical contract; specs and build log
under docs/superpowers.

Verified: JS 728, Scala 689, F# 691 unit tests; stubs and progression
M01-M13 and M07b; 176 end-to-end tests on Chromium and WebKit.

Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>
2026-11-11 12:05:29 +01:00

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HTML

<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Pure Life</title>
<link rel="icon" href="data:,">
<style>
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; align-items: center;
justify-content: center; gap: 12px; background: #1b1b1b; color: #ddd; font: 14px system-ui, sans-serif; }
h1 { margin: 0; font-size: 20px; }
canvas { background: #111111; border: 2px solid #333; cursor: crosshair; }
p { margin: 0; color: #999; }
</style>
</head>
<body>
<h1>Pure Life</h1>
<canvas id="game" width="640" height="504"></canvas>
<p>Click a cell to switch it on or off. Space runs and pauses, N steps one generation, R fills the board at random, C clears it.</p>
<script type="module" src="web/dist/life.js"></script>
</body>
</html>