From: Drew Olson <olsonas@...>
Date: 2006-12-20T22:51:55+09:00
Subject: Re: ruby puzzle: Group candies by unique record fields

Woga Swoga wrote:

> Can anyone come up with a ruby code snipet that will use the "group"
> variable to extract out the group labels (unique values of the color or
> tate field), and then dump out the Candy list by group.
> 
> Really appreciate your help!

Not sure if your Candy list is actually a hash or just an array of Candy 
objects. I'll write the code assuming the later.

group_flag = false
group_flag = true if group == "color"
grouping = {}

candy.each do |piece|
  element = piece.color if group_flag
  element = piece.taste if !group_flag
  grouping[element] ||= []
  grouping[element] << piece
end

grouping.each do |key,element|
  puts "Grouping: #{key}"
  element.each do |piece|
    puts "  "+candy.name
  end
end

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