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<div class="oranda-hide">
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# Rustlings 🦀❤️
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</div>
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Greetings and welcome to Rustlings.
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This project contains small exercises to get you used to reading and writing Rust code.
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This includes reading and responding to compiler messages!
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It is recommended to do the Rustlings exercises in parallel to reading [the official Rust book](https://doc.rust-lang.org/book/), the most comprehensive resource for learning Rust 📚️
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[Rust By Example](https://doc.rust-lang.org/rust-by-example/) is another recommended resource that you might find helpful.
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It contains code examples and exercises similar to Rustlings, but online.
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## Getting Started
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### Installing Rust
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Before installing Rustlings, you need to have _Rust installed_.
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Visit [www.rust-lang.org/tools/install](https://www.rust-lang.org/tools/install) for further instructions on installing Rust.
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This'll also install _Cargo_, Rust's package/project manager.
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🐧 If you're on Linux, make sure you've installed `gcc` (for a linker). Deb: `sudo apt install build-essential gcc`. Dnf: `sudo dnf install gcc`.
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🍎 If you're on MacOS, make sure you've installed Xcode and its developer tools by typing `xcode-select --install`.
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### Installing Rustlings
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The following command will download and compile Rustlings:
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```bash
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cargo install rustlings --locked
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```
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### Initialization
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After installing Rustlings, run the following command to initialize the `rustlings/` directory:
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```bash
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rustlings init
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```
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Now, go into the newly initialized directory and run Rustlings for further instructions on getting started with the exercises:
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```bash
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cd rustlings/
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rustlings
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```
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## Doing exercises
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The exercises are sorted by topic and can be found in the subdirectory `rustlings/exercises/<topic>`.
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For every topic there is an additional README file with some resources to get you started on the topic.
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We really recommend that you have a look at them before you start.
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The task is simple.
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Most exercises contain an error that keeps them from compiling, and it's up to you to fix it!
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Some exercises are also run as tests, but Rustlings handles them all the same.
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To run the exercises in the recommended order, execute:
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```bash
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rustlings
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```
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This will try to verify the completion of every exercise in a predetermined order (what we think is best for newcomers).
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It will also rerun automatically every time you change a file in the `exercises/` directory.
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In case you want to go by your own order, or want to only verify a single exercise, you can run:
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```bash
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rustlings run EXERCISE_NAME
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```
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Or simply use the following command to run the next pending exercise in the course:
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```bash
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rustlings run
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```
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In case you get stuck, you can run the following command to get a hint for your exercise:
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```bash
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rustlings hint EXERCISE_NAME
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```
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You can also get the hint for the next pending exercise with the following command:
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```bash
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rustlings hint
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```
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## Quizzes
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After every couple of sections, there will be a quiz that'll test your knowledge on a bunch of sections at once.
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These quizzes are found in `exercises/quizN.rs`.
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## Continuing On
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<!-- TODO: Mention third-party exercises -->
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Once you've completed Rustlings, put your new knowledge to good use!
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Continue practicing your Rust skills by building your own projects, contributing to Rustlings, or finding other open-source projects to contribute to.
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## Uninstalling Rustlings
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If you want to remove Rustlings from your system, there are two steps.
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1️⃣ Remove the `rustlings` directory that was created by `rustlings init`:
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```bash
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rm -r rustlings
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```
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2️⃣ Run `cargo uninstall` to remove the `rustlings` binary:
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```bash
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cargo uninstall rustlings
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```
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That's it!
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## Contributing
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See [CONTRIBUTING.md](https://github.com/rust-lang/rustlings/blob/main/CONTRIBUTING.md).
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## Contributors ✨
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Thanks to [all the wonderful contributors](https://github.com/rust-lang/rustlings/graphs/contributors) 🎉
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