From: chr_news@... (Chistoph)
Date: 2001-11-04T04:30:32+09:00
Subject: [ruby-talk:24280] Re: Too much eval evil? (tell me why I shouldn't do this)

....
> this is a crazy idea or not and also present alternatives:
Hi,

a while back Ben and Me had a thread about this. Your final
solution was somewhere around the lines of

class Array
  def  multi_each 
    __multi_each__(*self) {|arg| yield arg } unless empty?
  end 
  private    
  def  __multi_each__(arg,*more_args)
    (more_args.empty?) ?
       arg.each { |r| yield [r] } :
       arg.each {|l| __multi_each__(*more_args) {|r| yield [l]+ r }} 
  end
end


[0..10, 43..46, ['z','yz','xyz','xz','zz']].multi_each { |list|  
p "width is: #{list[0]}, length is: #{list[1]}, hight is: #{list[2]}" }