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59 lines
1.6 KiB
59 lines
1.6 KiB
3 years ago
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# Space Age
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Welcome to Space Age on Exercism's Haskell Track.
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If you need help running the tests or submitting your code, check out `HELP.md`.
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## Instructions
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Given an age in seconds, calculate how old someone would be on:
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- Mercury: orbital period 0.2408467 Earth years
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- Venus: orbital period 0.61519726 Earth years
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- Earth: orbital period 1.0 Earth years, 365.25 Earth days, or 31557600 seconds
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- Mars: orbital period 1.8808158 Earth years
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- Jupiter: orbital period 11.862615 Earth years
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- Saturn: orbital period 29.447498 Earth years
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- Uranus: orbital period 84.016846 Earth years
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- Neptune: orbital period 164.79132 Earth years
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So if you were told someone were 1,000,000,000 seconds old, you should
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be able to say that they're 31.69 Earth-years old.
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If you're wondering why Pluto didn't make the cut, go watch [this
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youtube video](http://www.youtube.com/watch?v=Z_2gbGXzFbs).
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In this exercise, we provided the definition of the
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[algebric data type](http://learnyouahaskell.com/making-our-own-types-and-typeclasses)
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named `Planet`.
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You need to implement the `ageOn` function, that calculates how many
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years old someone would be on a `Planet`, given an age in seconds.
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Your can use the provided signature if you are unsure about the types, but
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don't let it restrict your creativity:
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```haskell
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ageOn :: Planet -> Float -> Float
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```
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## Source
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### Created by
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- @etrepum
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### Contributed to by
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- @iHiD
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- @joshgoebel
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- @kytrinyx
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- @mttakai
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- @petertseng
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- @ppartarr
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- @rbasso
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- @sharno
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- @sshine
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- @tejasbubane
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### Based on
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Partially inspired by Chapter 1 in Chris Pine's online Learn to Program tutorial. - http://pine.fm/LearnToProgram/?Chapter=01
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