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functional

100 / 100 · Low risk

Fine to try.

By citypaul/.dotfiles (GitHub) · data · 760 stars · scanned at commit cd4028d

Functional programming patterns with immutable data. Use when writing logic, data transformations, or encountering mutation bugs — including any feature request that builds, merges, filters, sorts, prices or otherwise reshapes records, lists, carts, orders or invoices, even when it never mentions immutability; load it alongside tdd for such changes, not instead of it. Covers immutability violations catalog, pure functions, composition, early returns, and options objects. Also use when composing…

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'functional' ] || [ -L ~/.agents/skills/'functional' ]; then echo 'A skill folder named functional already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/citypaul/.dotfiles' "$d" && git -C "$d" checkout --quiet 'cd4028d57d6e4e95814f7b8ee55ca13c23a9c2f0' -- 'claude/.claude/skills/functional' && mkdir -p ~/.agents/skills && cp -R "$d"/'claude/.claude/skills/functional' ~/.agents/skills/'functional' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'functional' ~/.claude/skills/'functional' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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