76 lines
2.7 KiB
Markdown
76 lines
2.7 KiB
Markdown
# Hello World
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The classical introductory exercise. Just say "Hello, World!".
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["Hello, World!"](http://en.wikipedia.org/wiki/%22Hello,_world!%22_program) is
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the traditional first program for beginning programming in a new language
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or environment.
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The objectives are simple:
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- Write a function that returns the string "Hello, World!".
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- Run the test suite and make sure that it succeeds.
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- Submit your solution and check it at the website.
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If everything goes well, you will be ready to fetch your first real exercise.
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## Rust Installation
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Refer to the [exercism help page][help-page] for Rust installation and learning
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resources.
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## Writing the Code
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Execute the tests with:
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```bash
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$ cargo test
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```
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All but the first test have been ignored. After you get the first test to
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pass, open the tests source file which is located in the `tests` directory
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and remove the `#[ignore]` flag from the next test and get the tests to pass
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again. Each separate test is a function with `#[test]` flag above it.
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Continue, until you pass every test.
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If you wish to run all tests without editing the tests source file, use:
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```bash
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$ cargo test -- --ignored
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```
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To run a specific test, for example `some_test`, you can use:
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```bash
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$ cargo test some_test
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```
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If the specific test is ignored use:
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```bash
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$ cargo test some_test -- --ignored
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```
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To learn more about Rust tests refer to the [online test documentation][rust-tests]
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Make sure to read the [Modules](https://doc.rust-lang.org/book/2018-edition/ch07-00-modules.html) chapter if you
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haven't already, it will help you with organizing your files.
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## Feedback, Issues, Pull Requests
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The [exercism/rust](https://github.com/exercism/rust) repository on GitHub is the home for all of the Rust exercises. If you have feedback about an exercise, or want to help implement new exercises, head over there and create an issue. Members of the rust track team are happy to help!
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If you want to know more about Exercism, take a look at the [contribution guide](https://github.com/exercism/docs/blob/master/contributing-to-language-tracks/README.md).
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[help-page]: https://exercism.io/tracks/rust/learning
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[modules]: https://doc.rust-lang.org/book/2018-edition/ch07-00-modules.html
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[cargo]: https://doc.rust-lang.org/book/2018-edition/ch14-00-more-about-cargo.html
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[rust-tests]: https://doc.rust-lang.org/book/2018-edition/ch11-02-running-tests.html
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## Source
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This is an exercise to introduce users to using Exercism [http://en.wikipedia.org/wiki/%22Hello,_world!%22_program](http://en.wikipedia.org/wiki/%22Hello,_world!%22_program)
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## Submitting Incomplete Solutions
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It's possible to submit an incomplete solution so you can see how others have completed the exercise.
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