ðŸŽ‰ Exercism Research is now launched. Help Exercism, help science and have some fun at research.exercism.io ðŸŽ‰

# yangyanzhan's solution

## to Space Age in the Raku Track

Published at Oct 24 2019 · 0 comments
Instructions
Test suite
Solution

#### Note:

This exercise has changed since this solution was written.

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 31.69 Earth-years old.

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

## Resources

Remember to check out the Perl 6 documentation and resources pages for information, tips, and examples if you get stuck.

## Running the tests

There is a test suite and module included with the exercise. The test suite (a file with the extension `.t6`) will attempt to run routines from the module (a file with the extension `.pm6`). Add/modify routines in the module so that the tests will pass! You can view the test data by executing the command `perl6 --doc *.t6` (* being the name of the test suite), and run the test suite for the exercise by executing the command `prove6 .` in the exercise directory.

## 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.

``````unit module SpaceAge;

role Planet {
method age-on(\$seconds) {
(\$seconds / \$.orbital-period).round(0.01);
}
}

class Earth does Planet is export {
my \$.orbital-period = 31557600;
}

class Mercury does Planet is export {
my \$.orbital-period = 31557600 * 0.2408467;
}

class Venus does Planet is export {
my \$.orbital-period = 31557600 * 0.61519726;
}

class Mars does Planet is export {
my \$.orbital-period = 31557600 * 1.8808158;
}

class Jupiter does Planet is export {
my \$.orbital-period = 31557600 * 11.862615;
}

class Saturn does Planet is export {
my \$.orbital-period = 31557600 * 29.447498;
}

class Uranus does Planet is export {
my \$.orbital-period = 31557600 * 84.016846;
}

class Neptune does Planet is export {
my \$.orbital-period = 31557600 * 164.79132;
}``````