Question 1

How do I enforce this Elixir style guide in my project?

Accepted Answer

Integrate Credo, the static analysis tool based on this guide, into your development workflow. Add it as a mix dependency, configure it in .credo.exs, and run 'mix credo' locally or in CI/CD for automated checks.

Question 2

What's the difference between this guide and the official Elixir style guide?

Accepted Answer

This guide is community-driven and serves as the basis for Credo, offering detailed, pragmatic rules with examples. The official Elixir guide is more concise and part of the language documentation, focusing on core idioms without tool integration.

Question 3

How to set up automated style checks for Elixir code?

Accepted Answer

Use Credo by adding it to your mix.exs file and configuring rules in .credo.exs. Run it via 'mix credo' to scan for violations based on this style guide, and integrate it into your CI pipeline for consistent enforcement.

Question 4

What are the best practices for documenting Elixir modules?

Accepted Answer

Follow the guide's recommendations: use @moduledoc and @doc with ExDoc, document every module or function or mark them with @moduledoc false, and put an empty line after @moduledoc but not between @doc and the function definition.

Question 5

How to avoid common pitfalls in Elixir like leaving IEx.pry in production?

Accepted Answer

The guide explicitly warns against debug statements in production; use Logger with &inspect/1 for logging instead. Always review code before deployment and consider using Credo to catch such issues automatically.

Question 6

Elixir style guide vs. Credo: which one should I follow?

Accepted Answer

They are complementary: the style guide provides the rules, and Credo enforces them. Follow the guide for coding standards, and use Credo for automated checks to ensure consistency and catch violations early.

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