From: Douglas Livingstone <rampant@...>
Date: 2005-04-14T03:38:49+09:00
Subject: Fixnum playing cards

I've been playing with ruby's playinc cards,and to make life easy my
cards are 1..54, and I've been adding things to Fixnum directly [1].
I've not used a language which lets me redefine numbers before, so not
sure how much trouble I can get my self into :)

Is this sane?

Douglas

[1] Code listing:

module PlayingCards
	
	def black?
		self > 26
	end
	
	def suit
		case self
			when 01..13; :hearts
			when 14..26; :dimonds
			when 27..39; :clubs
			when 40..52; :spades
			when 53..54; :joker
		end
	end
	
	def face
		return case n = (self - 1) % 13 + 1
			when 2..10; n.to_s.to_sym
			when 01; :Ace
			when 11; :Jack
			when 12; :Queen
			when 13; :King
		end unless self > 52
		
		return case self
			when 53; :Red
			when 54; :Black
		end unless self > 54
	end
	
	def card_name
		return "#{face} of #{suit}" unless self > 52
		return "#{face} #{suit}"    unless self > 54
	end
	
end

class Fixnum
	include PlayingCards
end

cards = (1..54).to_a.sort_by{rand}

puts cards.collect{|card| card.card_name}

puts "\nYou've got card! It is the #{cards.pop.card_name}."