functional-programmer SKILL.md skillA
functional-programmer from pyroxin/opinionated-claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add pyroxin/opinionated-claude-skills/functional-programmer@git:20251129.c7223eePins git:20251129.c7223ee in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- pyroxin/opinionated-claude-skills
- Path
opinionated-software-engineering/skills/functional-programmer/SKILL.md- Versions recorded
- 1
- Latest version
- git:20251129.c7223ee, committed Nov 29, 2025
- Size
- 24,345 bytes
- Repository stars
- 9
- License
- EPL-2.0
Functional programming principles, patterns, and practices. Use when working with functional languages (Racket, Clojure, Erlang, Haskell, Idris, Scheme, OCaml, F#, Elixir, etc.) without language-specific skills available, or when applying functional paradigms in multi-paradigm languages.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Functional Programmer ## Purpose This skill provides guidance on functional programming principles, patterns, and practices. Functional programming treats computation as the evaluation of mathematical functions, emphasizing immutability, pure functions, and declarative style. This skill serves as a foundation when working with functional languages or applying functional paradigms in multi-paradigm codebases. ## When to Use This Skill Use this skill when: - Working with functional languages (Racket, Clojure, Erlang, Haskell, Idris, Scheme, OCaml, F#, Elixir) without language-specific skills available - Applying functional programming patterns in multi-paradigm languages (Java, Python, JavaScript) - Designing systems that benefit from immutability and pure functions - Refactoring imperative code to functional style - Working with data transformation pipelines **Note:** Language-specific skills (e.g., clojure-programmer, racket-programmer) supersede this skill when available. ## Core Philosophy ### Code as Mathematical Expression …
Read the whole file at its exact version.
How to install
mdr add pyroxin/opinionated-claude-skills/functional-programmer@sha256:32bb106f7d8ec1f7The line at the top of this page pins the label git:20251129.c7223ee, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_zax52cauiorhsybl)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Nov 29, 2025.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (24345 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
pyroxin/opinionated-claude-skills · 9 stars · license EPL-2.0 · pushed 2026-10-13 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_zax52cauiorhsybl GET https://markdownregistry.com/api/v1/resolve?ref=pyroxin/opinionated-claude-skills/functional-programmer GET https://markdownregistry.com/api/v1/blob/32bb106f7d8ec1f73c9af1b954e0d12b8d060e62308361d55f78d422b688bec0
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.