From: Ryan Leavengood <mrcode@...>
Date: 2005-07-11T14:09:41+09:00
Subject: Re: accessing index inside map

nobuyoshi nakada wrote:
>
> What about Enumerator#with_index?
> 
>   [1,2,3,4,5,6].map.with_index {|x,i|[2,5].include?(i) ? x : x*2}

I like that, personally. In fact each_with_index could become 
each.with_index (though we obviously need the old one for backwards 
compatibility.)

Ryan