From: nobu.nokada@...
Date: 2003-05-30T13:08:04+09:00
Subject: Re: Iteration - last detection

Hi,

At Fri, 30 May 2003 07:58:35 +0900,
dblack@superlink.net wrote:
> OK, as penance for clouding the issue with the mythical
> Enumerable#size, I feel morally obliged to write a real version :-)
> I'm not sure how horrible this is.  Very, I suspect.  But anyway,
> another possibility:
> 
>   module Enumerable
>     def each_with_last
>       n = -1
>       each { n += 1 }
>       each_with_index {|e,i| yield(e, i == n)}
>     end
>   end

Enumerable doesn't guarantee multiple iterations. e.g. IO.

-- 
Nobu Nakada