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POIs there a more functional way, than using custom case statements, to write this in Ruby?
 

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    <p>Imagine the following code:</p> <pre><code>class SimpleLetter def values ("a" .. "z").to_a end def ===(other) values.include?(other) end end class Vowel &lt; SimpleLetter def values ["a","e","i","o","u"] end end class Consonant &lt; SimpleLetter def values super - Vowel.new.values end end objects = ("a" .. "f").to_a + (1 .. 5).to_a objects.each do |letter| case letter when Vowel.new puts "#{letter} it's a vowel" when Consonant.new puts "#{letter} it's a consonant" else puts "#{letter} it's something else" end end </code></pre> <p>I could have chosen any other classes instead, I am just using them as an example. I like Scala's <code>match</code> and extractors a lot, and I figured this could be a nice way of writing the same thing in Ruby. Is there a better way of writing the above without having to instantiate new objects just so I could call their <code>===</code> method? </p> <p>Just to avoid unnecessary posts, yes, I know I could do this:</p> <pre><code>case letter when ["a","e","i","o","u"].include?(letter) # ... end </code></pre>
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