Lucas WintherandClaude Fable 5.2
edd57f0148
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>
32 lines
1.3 KiB
Scala
32 lines
1.3 KiB
Scala
package snake
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/**
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* Optional (Exercise 4.7). A `State[S, A]` is a plain function from a state to a pair: `s => (value, nextS)`.
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* It is `Random[A]` with the seed replaced by any state type `S`. Nothing in the game uses this file.
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* `run` is the case class's field, so there is nothing to write for it.
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*/
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final case class State[S, A](run: S => (A, S)):
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/** Transform the value this State produces; the state threading is unchanged. */
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def map[B](f: A => B): State[S, B] = ???
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/** Run this State, feed its value to `f` to pick the next State, and run that with the state this one left behind. */
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def flatMap[B](f: A => State[S, B]): State[S, B] = ???
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object State:
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/** A State that gives `a` and leaves the state untouched: `s => (a, s)`. */
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def pure[S, A](a: A): State[S, A] = ???
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/**
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* A State whose value is the current state, which it leaves untouched: `s => (s, s)`. When nothing else fixes the
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* state type, give it at the call site: `State.get[Int]`.
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*/
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def get[S]: State[S, S] = ???
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/** A State that replaces the state with `s` and gives `()`: whatever the old state, `((), s)`. */
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def put[S](s: S): State[S, Unit] = ???
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/** A State that replaces the state `s` with `f(s)` and gives `()`. */
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def modify[S](f: S => S): State[S, Unit] = ???
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