3.5 KiB
Clock
Implement a clock that handles times without dates.
You should be able to add and subtract minutes to it.
Two clocks that represent the same time should be equal to each other.
Rust Traits for .to_string()
Did you implement .to_string() for the Clock struct?
If so, try implementing the
Display trait for Clock instead.
Traits allow for a common way to implement functionality for various types.
For additional learning, consider how you might implement String::from for the Clock type.
You don't have to actually implement this—it's redundant with Display, which is generally the
better choice when the destination type is String—but it's useful to have a few type-conversion
traits in your toolkit.
Rust Installation
Refer to the exercism help page for Rust installation and learning resources.
Writing the Code
Execute the tests with:
$ cargo test
All but the first test have been ignored. After you get the first test to
pass, open the tests source file which is located in the tests directory
and remove the #[ignore] flag from the next test and get the tests to pass
again. Each separate test is a function with #[test] flag above it.
Continue, until you pass every test.
If you wish to run all ignored tests without editing the tests source file, use:
$ cargo test -- --ignored
To run a specific test, for example some_test, you can use:
$ cargo test some_test
If the specific test is ignored use:
$ cargo test some_test -- --ignored
To learn more about Rust tests refer to the online test documentation
Make sure to read the Modules chapter if you haven't already, it will help you with organizing your files.
Further improvements
After you have solved the exercise, please consider using the additional utilities, described in the installation guide, to further refine your final solution.
To format your solution, inside the solution directory use
cargo fmt
To see, if your solution contains some common ineffective use cases, inside the solution directory use
cargo clippy --all-targets
Submitting the solution
Generally you should submit all files in which you implemented your solution (src/lib.rs in most cases). If you are using any external crates, please consider submitting the Cargo.toml file. This will make the review process faster and clearer.
Feedback, Issues, Pull Requests
The 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!
If you want to know more about Exercism, take a look at the contribution guide.
Source
Pairing session with Erin Drummond https://twitter.com/ebdrummond
Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.