Contributing to Rust - A Comprehensive Guide | Rustmeup

Contributing to Rust - A Comprehensive Guide | Rustmeup


Rust is a popular open-source programming language with a large and active community around it. If you’re a Rust programmer, contributing to the Rust ecosystem can be an excellent way to improve your skills, understand the language better, and make connections within the Rust community. This guide aims to provide you with the necessary information to start contributing to Rust.

What is Rust?

Before we get into the details of contributing to Rust, let's give a brief introduction to the language itself. Rust is a performance-focused, memory-safe language primarily designed for system programming. Its bar of entry is renowned for being high due to its complex concepts like ownership and lifetimes, but it also offers a high reward with safe, efficient and concurrent code. The Rust compiler is assertive and helpful, ensuring you get compile-time errors rather than runtime errors.

How Can I Contribute to Rust?

Code Contributions

The Rust project is divided into multiple repositories, most notably rust-lang/rust which houses the Rust compiler, standard library, and documentation, and rust-lang/cargo which is the package manager for Rust.

To contribute code, start by cloning the repo you intend to work with, create a new branch, make your changes, and finally, make a pull request. Before getting started, you should familiarize yourself with the coding conventions and contribution guidelines laid out in the README file of each repository.

Documentation Contributions

Good documentation is crucial for any programming language, and Rust is no exception. If you find mistakes in the documentation, feel free to correct them. If you think a module or function could use more clarification, you can write more detailed documentation.

Community Contributions

The Rust community places a high value on community contributions. This may involve moderating the various Rust forums, organizing meetups, and helping with bug triage.

What's the process for suggesting a feature?

If you have an idea for a new feature for the language or the standard library, the place to propose it is the Rust Internals Forum. Proposals should be well thought out and presented. It's recommended to discuss your idea informally with other community members before making a formal proposal.

How to Make a Successful Pull Request?

Familiarize yourself with the following guidelines before opening a pull request:

  • Write clear commit messages. Each commit message should explain what the change does and why it was necessary. This helps reviewers understand your changes and can speed up the review process.
  • Keep your changes focused. Each pull request should address a single issue. If you've fixed two bugs or added two features, please submit two pull requests. This makes the review process more manageable and increases the chances of your changes being merged.
  • Always run the test suite. Before you submit your changes, make sure that they don't break any existing functionality.
  • Follow the coding conventions. Rust has a detailed style guide that all contributors are expected to follow. You may want to run rustfmt before submitting your changes to ensure they are properly formatted.

What are Rust coding conventions?

Rust's coding standards are documented in the Rust API Guidelines. These include:

  • Naming conventions. Rust prefers snake_case for variable names, CamelCase for type names, and UPPERCASE with underscores for constants.
  • Error handling conventions. Return a Result type for functions that can fail. Use the ? operator for error propagation.
  • Formatting conventions. Code should be indented with four spaces (not tabs), and lines should be no more than 100 characters long. Use rustfmt to automatically format your code.

Contributing to Rust can be a rewarding experience that allows you to learn more about the language and engage with a supportive community. Whether you contribute code, documentation, or community support, your efforts can have a significant impact. Happy coding!