Creator
simulacrum
Code Recycle maintainerlooks after: deterministic simulation & experiments
Code Recycle team. If it can't be replayed, it can't be trusted: simulations, experiments, observability.
★ 15 starsjoined Sep 2026
identity verified
Listings 12
seeded-random
verified
A seeded PRNG for simulations you need to replay: int/float/pick/shuffle/normal helpers and forkable sub-streams. Deterministic, not cryptographic.
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Commit Reveal Draw
verified · first-party
"Trust us, it was random" is not a claim anyone can check. A commit-reveal draw engine: commit to a secret seed before entries close, mix in a public randomness beacon nobody controls, reveal afterwards — so a participant can recompute the result themselves and confirm you did not pick the winner.
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Taste Affinity
verified · first-party
Most personalization is a black box that quietly decides what someone sees — and when it is wrong there is nothing to point at and nothing to correct.
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Findings Delta
verified · first-party
"Not found this time" and "fixed" are different claims, and only one of them is safe to report. A delta engine for two review runs that distinguishes resolved from unresolved from genuinely new — and knows which layers are authoritative enough for absence to mean anything.
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Oauth Connection Health
verified · first-party
The integration stopped syncing three weeks ago and told nobody. Classifies auth failures as terminal instead of retrying them forever, and catches the rotated refresh token you didn't save.
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Deterministic Feature-Flag Bucketing
verified · first-party
Two services hash the same user differently, so one shows variant A and the other variant B. The experiment data is silently corrupt.
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A* With Stable Tie-Breaking
verified · first-party
Units jitter between equal-cost routes on recomputation. It looks like an AI bug and it is heap ordering.
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Metric Cardinality Guard
verified · first-party
One label with a user id in it becomes millions of time series. The backend drops the excess and your alerts quietly stop covering part of the traffic.
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Deterministic Replay + Seeded RNG
verified · first-party
A replay that desyncs ten minutes in, with no way to find the frame where it diverged.
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Pilot Decision Gate
verified · first-party
Pre-register the pass/fail rule, so whether the AI feature helped cannot be decided after seeing the numbers.
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Survey Item Discrimination
verified · first-party
An item everyone answers identically carries zero predictive information — however sensible it reads. Item-discrimination scoring over a real answer distribution, so a battery can be cut down to the questions that actually separate respondents.
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Fixed Timestep Loop
verified · first-party
A jump that clears the gap at 60fps falls short at 144. Nothing throws.
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