From: Brian Candler <b.candler@...>
Date: 2009-06-02T19:46:53+09:00
Subject: Re: <, >, and ranges in a case statement.

Max Williams wrote:
> Wow, that's a lot more complicated than i thought.  I think for the sake 
> of ease and readability i'd stick with doing a more longwinded version, 
> like
> 
> category = case
>   when age < 12               : "child"
>   when (13..17).include? age  : "minor"
>   when (18..24).include? age  : "young ad*lt"
>   when (25..49).include? age  : "ad*lt"
>   when (50..64).include? age  : "middle aged"
>   when age > 65               : "senior"
>   else                        : "not an age"
> end
> 
> thanks for the insight though!

If you want to allow for the possibility of fractional ages:

  when (13...18).include? age
  when (18...25).include? age
  when (18...50).include? age
  .. etc
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