exercism-solutions/rust/space-age

Space Age

Welcome to Space Age on Exercism's Rust Track. If you need help running the tests or submitting your code, check out HELP.md.

Instructions

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

• Mercury: orbital period 0.2408467 Earth years
• Venus: orbital period 0.61519726 Earth years
• Earth: orbital period 1.0 Earth years, 365.25 Earth days, or 31557600 seconds
• 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.

Some Rust topics you may want to read about while solving this problem:

• Traits, both the From trait and implementing your own traits

• Default method implementations for traits

• Macros, the use of a macro could reduce boilerplate and increase readability for this exercise. For instance, a macro can implement a trait for multiple types at once, though it is fine to implement years_during in the Planet trait itself. A macro could define both the structs and their implementations. Info to get started with macros can be found at:

  • The Macros chapter in The Rust Programming Language
  • an older version of the Macros chapter with helpful detail
  • Rust By Example

Source

Created by

• @IanWhitney

Contributed to by

• @ashleygwilliams
• @bobahop
• @coriolinus
• @cwhakes
• @durka
• @eddyp
• @efx
• @ErikSchierboom
• @IanWhitney
• @joshgoebel
• @lutostag
• @nfiles
• @ocstl
• @petertseng
• @rofrol
• @stringparser
• @xakon
• @ZapAnton

Based on

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