From: Devin Mullins <twifkak@...>
Date: 2006-11-27T04:14:10+09:00
Subject: Re: find index of first non zeo value in array

Robert Klemme wrote:
> Did we have a solution with #inject already?  In case we didn't:
> 
> irb(main):001:0> require 'enumerator'
> => true
> irb(main):002:0> a=Array.new(10,0) << 666 << 0
> => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 666, 0]
> irb(main):003:0> a.to_enum(:each_with_index).inject(nil) {|pp,(x,i)| 
> break i unless x == 0}
> => 10

sub 'inject(nil) {|pp,(x,i)|', 'find {|x,i|'

But I vote for adding to Enumerable or Array. #index_where or #find_by 
or something. (My preference over alias-and-delegate.)

Devin