elm/exercises/space-age
Katrina Owen 6151955420 Generate static exercise README templates
We are working towards making exercises stand-alone. That is to say: no more generating READMEs on the fly.

This will give maintainers more control over each individual exercise README, and it will also make some of the backend logic for delivering exercises simpler.

The README template uses the Go text/template package, and the default templates generate the same READMEs as we have been generating on the fly.  See the documentation in [regenerating exercise readmes][regenerate-docs] for details.

The READMEs can be generated at any time using a new 'generate' command in configlet. This command has not yet landed in master or been released, but can be built from source in the generate-readmes branch on [configlet][].

[configlet]: https://github.com/exercism/configlet
[regenerate-docs]: https://github.com/exercism/docs/blob/master/maintaining-a-track/regenerating-exercise-readmes.md
2017-07-16 13:24:35 -06:00
..
tests Skip all but first test of each example 2017-07-05 15:35:15 -05:00
elm-package.json Remove leading “x” from the repository field of all exercise elm-package.json field 2017-06-20 20:08:47 -04:00
package.json Add "watch" command to all exercises 2017-07-05 06:22:37 -05:00
README.md Generate static exercise README templates 2017-07-16 13:24:35 -06:00
SpaceAge.elm Update elm-package.json and .elm files to support Elm 0.17 2016-05-12 22:50:29 -04:00
SpaceAge.example.elm Update exercise support files to npm + elm 0.18 2016-12-17 17:29:40 -05:00

Space Age

Given an age in seconds, calculate how old someone would be on:

  • Earth: orbital period 365.25 Earth days, or 31557600 seconds
  • Mercury: orbital period 0.2408467 Earth years
  • Venus: orbital period 0.61519726 Earth years
  • Mars: orbital period 1.8808158 Earth years
  • Jupiter: orbital period 11.862615 Earth years
  • Saturn: orbital period 29.447498 Earth years
  • Uranus: orbital period 84.016846 Earth years
  • Neptune: orbital period 164.79132 Earth years

So if you were told someone were 1,000,000,000 seconds old, you should be able to say that they're 31 Earth-years old.

If you're wondering why Pluto didn't make the cut, go watch this youtube video.

Elm Installation

Refer to the Exercism help page for Elm installation and learning resources.

Writing the Code

The first time you start an exercise, you'll need to ensure you have the appropriate dependencies installed.

$ npm install

Execute the tests with:

$ npm test

Automatically run tests again when you save changes:

$ npm run watch

As you work your way through the test suite, be sure to remove the skip <| calls from each test until you get them all passing!

Source

Partially inspired by Chapter 1 in Chris Pine's online Learn to Program tutorial. http://pine.fm/LearnToProgram/?Chapter=01

Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.