From: nobuyoshi nakada <nobuyoshi.nakada@...>
Date: 2005-07-08T17:22:55+09:00
Subject: Re: accessing index inside map

Hi,

At Fri, 8 Jul 2005 16:30:22 +0900,
Pe�a, Botp wrote in [ruby-talk:147536]:
> i'd like to double the element values except those loc on the 2nd and 5th
> indices eg.

$ ruby -renumerator -e 'p (1..6).enum_for(:each_with_index).map{|x,i|[2,5].include?(i) ? x : x*2}'
[2, 4, 3, 8, 10, 6]

-- 
Nobu Nakada