From: Devin Mullins <twifkak@...>
Date: 2006-11-27T01:29:43+09:00
Subject: Re: find index of first non zeo value in array

James Edward Gray II wrote:
> I believe there has been talk in the past of having index() take a  
> block for matching.
Meh... talk schmalk...

class Array
   alias orig_index index
   def index(*args)
     return orig_index(*args) unless block_given?
     (0...length).each do |i|
       return i if yield self[i]
     end
     nil
   end
end

array = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, 
0, 0, 0, 0, 0]
array.index 21 #=> 15
array.index {|n| n.nonzero? } #=> 15

Devin