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# rustlings 🦀❤️ [](https://buildkite.com/mokou/rustlings)
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Greetings and welcome to `rustlings` . This project contains small exercises to get you used to reading and writing Rust code. This includes reading and responding to compiler messages!
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_...looking for the old, web-based version of Rustlings? Try [here ](https://github.com/rust-lang/rustlings/tree/rustlings-1 )_
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Alternatively, for a first-time Rust learner, there's several other resources:
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- [The Book ](https://doc.rust-lang.org/book/index.html ) - The most comprehensive resource for learning Rust, but a bit theoretical sometimes. You will be using this along with Rustlings!
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- [Rust By Example ](https://doc.rust-lang.org/rust-by-example/index.html ) - Learn Rust by solving little exercises! It's almost like `rustlings` , but online
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## Getting Started
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_Note: If you're on MacOS, make sure you've installed Xcode and its developer tools by typing `xcode-select --install` ._
_Note: If you have Xcode 10+ installed, you also need to install the package file found at `/Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg` ._
You will need to have Rust installed. You can get it by visiting https://rustup.rs. This'll also install Cargo, Rust's package/project manager.
## MacOS/Linux
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Just run:
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```bash
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curl -L https://git.io/rustlings | bash
# Or if you want it to be installed to a different path:
curl -L https://git.io/rustlings | bash -s mypath/
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```
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This will install Rustlings and give you access to the `rustlings` command. Run it to get started!
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## Windows
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First, set `ExecutionPolicy` to `RemoteSigned` :
```ps
Set-ExecutionPolicy RemoteSigned
```
Then, you can run:
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```ps
Invoke-WebRequest https://git.io/rustlings-win | Select-Object -ExpandProperty Content | Out-File $env:TMP/install_rustlings.ps1; Unblock-File $env:TMP/install_rustlings.ps1; Invoke-Expression $env:TMP/install_rustlings.ps1
```
To install Rustlings. Same as on MacOS/Linux, you will have access to the `rustlings` command after it.
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## Manually
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Basically: Clone the repository, checkout to the latest tag, run `cargo install` .
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```bash
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git clone https://github.com/rust-lang/rustlings
cd rustlings
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git checkout tags/3.0.0 # or whatever the latest version is (find out at https://github.com/rust-lang/rustlings/releases/latest)
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cargo install --force --path .
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```
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If there are installation errors, ensure that your toolchain is up to date. For the latest, run:
```bash
rustup update
```
Then, same as above, run `rustlings` to get started.
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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>` . For every topic there is an additional README file with some resources to get you started on the topic. We really recommend that you have a look at them before you start.
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The task is simple. Most exercises contain an error that keep it from compiling, and it's up to you to fix it! Some exercises are also run as tests, but rustlings handles them all the same. To run the exercises in the recommended order, execute:
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```bash
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rustlings watch
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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). It will also rerun automatically every time you change a file in the `exercises/` directory. If you want to only run it once, you can use:
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```bash
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rustlings verify
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```
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This will do the same as watch, but it'll quit after running.
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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 myExercise1
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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:
``` bash
rustlings hint myExercise1
```
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## Testing yourself
After every couple of sections, there will be a test that'll test your knowledge on a bunch of sections at once. These tests are found in `exercises/testN.rs` .
## Completion
Rustlings isn't done; there are a couple of sections that are very experimental and don't have proper documentation. These include:
- Errors (`exercises/errors/`)
- Option (`exercises/option/`)
- Result (`exercises/result/`)
- Move Semantics (could still be improved, `exercises/move_semantics/` )
Additionally, we could use exercises on a couple of topics:
- Structs
- Better ownership stuff
- `impl`
- ??? probably more
If you are interested in improving or adding new ones, please feel free to contribute! Read on for more information :)
## Contributing
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See [CONTRIBUTING.md ](./CONTRIBUTING.md ).
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## Credits
`rustlings` was originally written by [Carol ](https://github.com/carols10cents )!
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## Contributors ✨
Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
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