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Erlang

Skill G1Joshi/Agent-Skills/skills/languages/erlang

Erlang concurrent programming with OTP. Use for .erl files.From its SKILL.md

Install
npx -y skills add G1Joshi/Agent-Skills --skill erlang

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

One thing to look at

  • 12 stars12 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.

SKILL.md

1.1 KB, 252 tokens by cl100k_base, as published. Nobody here has run it

Erlang

Erlang powered WhatsApp and the telecom backbone. OTP 27 (2024) adds a JSON module and triple-quoted strings. It is the foundation of Elixir.

When to Use

  • 99.9999999% Reliability: Hot code reloading, supervision trees.
  • Massive Concurrency: Lightweight processes (millions per node).
  • Distributed Systems: Distributed Erlang nodes connect natively.

Core Concepts

OTP

Open Telecom Platform. Behaviors like gen_server (Generic Server).

Let it Crash

Don't catch exceptions. Let the supervisor restart the process.

Message Passing

Pid ! Message. No shared memory.

Best Practices (2025)

Do:

  • Use rebar3: The standard build tool.
  • Use maybe: The new monadic-like flow control (enabled by default in 27).
  • Use json: The new stdlib JSON parser (faster/safer).

Don't:

  • Don't optimize pre-maturely: Profile first. Messages are copied.

References

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.

Keep looking

Skills are one crate of 325,949. Ordering is by how many stacks a row turns up in, so the top of any crate is what has actually been picked rather than what has the most stars.