From: Martin DeMello <martindemello@...>
Date: 2005-02-05T07:50:16+09:00
Subject: Re: iteration the ruby way

David A. Black <dblack@wobblini.net> wrote:
> If your enumerable object has a size method, you can do:
> 
>    bottom_items.each_with_index do |item,i|
>      do_something_with(...)
>      unless i == bottom_items.size - 1
>        ...
>      end
>    end
> 
> or something similar with #each_index.

And if it doesn't, this approach should work:

irb(main):005:0> b = [1,2,3,4,5]
=> [1, 2, 3, 4, 5]
irb(main):006:0> b.inject(lambda {}) {|a,v| a.call; puts v; a = lambda { puts "-
--" }}

martin

p.s. who'd have thunk it