From: Martin DeMello <martindemello@...>
Date: 2002-11-26T21:06:21+09:00
Subject: Re: each_with_index & collect_with_index?

dblack@candle.superlink.net wrote:
> As for the second....  I recently appointed myself President of
> Citizens for MWI [map_with_indices], Inc.  (See
> <http://www.ruby-talk.org/51619>).  You may join the organization,
> free of charge :-)  Anyway, there's been a lot of talk of this at
> various points; if you search for map_with_index and map_with_indices
> on the ruby-talk archive, you'll see most of it.  Matz has recently
> indicated that he doesn't think there's a demand or need for it.  I'm
> still trying to keep the dream alive :-)

How about a wiki page of uses for it? I keep thinking it's a nifty
feature, and then not being able to think of where I'd actually use it.

<thinks>
Okay, here's one...

a.map_with_index {|e,i| "#{e}\t#{i.mod(4).zero? ? "\n":""}.join
# 4 column printing

martin