Comments on: Metaprogramming with Darkie The Fridge http://involution.com/2006/07/12/metaprogramming-with-darkie-the-fridge/ Tony Perrie's Weblog Sat, 17 Jul 2010 00:32:20 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Administrator http://involution.com/2006/07/12/metaprogramming-with-darkie-the-fridge/comment-page-1/#comment-1036 Administrator Wed, 12 Jul 2006 21:32:39 +0000 http://involution.com/2006/07/12/metaprogramming-with-darkie-the-fridge/#comment-1036 Problem is, the collect has to return a proc or the assignment would yield nil. Consider the following example. <pre><code> m = 'mr_beastly_' funarray = (1..50).collect { |darkie_the_fridge| thefun = m + darkie_the_fridge.to_s + "!" gift_of_beard = "Proc.new { |cinnamocha| puts cinnamocha * #{darkie_the_fridge} }" eval %{ def #{thefun}(cinnamocha) #{gift_of_beard}.call(cinnamocha) end } eval(gift_of_beard) } mr_beastly_6!('byzantine ghoulish pillary') funarray[6].call('zingosphere ') boogiebot = funarray[10] boogiebot['zazzle99 ']</code></pre> Output is <pre><code>byzantine ghoulish pillarybyzantine ghoulish pillarybyzantine ghoulish pillarybyzantine ghoulish pillarybyzantine ghoulish pillarybyzantine ghoulish pillary zingosphere zingosphere zingosphere zingosphere zingosphere zingosphere zingosphere zazzle99 zazzle99 zazzle99 zazzle99 zazzle99 zazzle99 zazzle99 zazzle99 zazzle99 zazzle99 zazzle99 </code></pre> Also, try out variations with irb. Problem is, the collect has to return a proc or the assignment would yield nil. Consider the following example.

  m = 'mr_beastly_'
  funarray = (1..50).collect { |darkie_the_fridge|
    thefun = m + darkie_the_fridge.to_s + "!"
    gift_of_beard = "Proc.new { |cinnamocha| puts cinnamocha * #{darkie_the_fridge} }"
    eval %{ def #{thefun}(cinnamocha)
              #{gift_of_beard}.call(cinnamocha)
            end
          }
    eval(gift_of_beard)
  }
  mr_beastly_6!('byzantine ghoulish pillary')
  funarray[6].call('zingosphere ')
  boogiebot = funarray[10]
  boogiebot['zazzle99 ']

Output is

byzantine ghoulish pillarybyzantine ghoulish pillarybyzantine ghoulish pillarybyzantine ghoulish pillarybyzantine ghoulish pillarybyzantine ghoulish pillary
zingosphere zingosphere zingosphere zingosphere zingosphere zingosphere zingosphere
zazzle99 zazzle99 zazzle99 zazzle99 zazzle99 zazzle99 zazzle99 zazzle99 zazzle99 zazzle99 zazzle99

Also, try out variations with irb.

]]> By: JTAxx http://involution.com/2006/07/12/metaprogramming-with-darkie-the-fridge/comment-page-1/#comment-1030 JTAxx Wed, 12 Jul 2006 19:11:02 +0000 http://involution.com/2006/07/12/metaprogramming-with-darkie-the-fridge/#comment-1030 how would you call the function from the created array, like a = (1..50).collect {...........} then if you'd call a[5] 'boogiebot', it would return the same output as mr_beastly_5! ? how would you call the function from the created array, like

a = (1..50).collect {………..}

then if you’d call a[5] ‘boogiebot’, it would return the same output as mr_beastly_5! ?

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