CUPID — For Joyful Coding
summary
Presents CUPID as five practical properties — Composable, Unix philosophy, Predictable, Idiomatic, Domain-based — and claims they make code joyful by focusing on small surface area, minimal dependencies, and intention‑revealing names. Gives concrete examples: an open‑source xjb utility (2004) refactored to drop log4j, a decades‑old C image‑processing bug fixed by readable code, an algorithmic‑trading stack with high test coverage and deterministic behavior, and a cupid.dev site that documents the pattern after the writeup reaches Hacker News front page.
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chapters (15)
- 0:00Intro
- 0:20Motivation; setting the scene
- 6:08Who are we writing code for?
- 8:31Habitable vs. joyful
- 12:15Properties over principles
- 15:17Properties for properties
- 19:54CUPID - for joyful coding
- 20:45Composable
- 25:56Unix philosophy
- 28:42Aging like wine vs. aging like milk
- 34:16Predictable
- 39:20Idiomatic
- 42:19Domain-based
- 44:19CUPID applied
- 48:08Outro
