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