/functional-programmer
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
$ npx -y skills add Pyroxin/opinionated-claude-skills --skill functional-programmer --agent claude-codeHow it fires
How this skill gets triggered: by you, by Claude, or both.
- Fires itselfAuto-invocation. Claude auto-loads it when your prompt matches the work.
- You can call itInvoke it directly when you want it.
- Slash command
/functional-programmer
Context preview
The summary Claude sees to decide when to auto-load this skill.
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
This project descends from the personal prompts I'd been keeping for Claude Code prior to the release of skills and plugins. Over time it's also evolved into a sandbox where I figure out what makes Claude reliably good at a task, and find prompts that work.
Other skills on opinionated-claude-skills.
- /macos-programmer
macOS-specific development patterns, platform APIs, and decision frameworks. Use when developing Mac apps, macOS applications, Cocoa/AppKit code, or making SwiftUI vs AppKit decisions. Covers NSWindow management, NSDocument architecture, sandboxing, code signing, notarization,
Open skill - /swift-programmer
Swift-specific idioms, tooling, and philosophy. Use when working with Swift code. Emphasizes protocol-oriented programming, value semantics, strict concurrency (Swift 6+), and compile-time safety guarantees.
Open skill - /fish-shell-scripting
Fish shell scripting judgment frameworks and critical idioms. Use when writing Fish scripts or shell automation. Focuses on when to use Fish vs bash, macOS/Fedora compatibility requirements, and Fish-specific patterns that prevent bugs (universal variable anti-patterns, wrapper
Open skill - /java-programmer
Java-specific tooling, documentation standards, testing practices, and modern idioms. Use when working with Java code or Java-based projects on the JVM.
Open skill - /clojure-programmer
Clojure-specific philosophy, idioms, and judgment frameworks. Use when working with Clojure code. Emphasizes data-oriented design, runtime validation with spec, REPL-driven development, and the philosophy of simplicity over ease.
Open skill - /racket-programmer
Racket-specific tooling, libraries, idioms, and language-oriented programming philosophy. Use when working with Racket code. Emphasizes LOP, contracts, macros, and design methodology.
Open skill