From: "David A. Black" <dblack@...>
Date: 2003-12-03T23:21:37+09:00
Subject: Re: each_with_what_index?

Hi --

On Wed, 3 Dec 2003, T. Onoma wrote:

> Can you see the bug'a'boo in the following snippet?

No, it looks OK to me.

>     a[1..-1].each_with_index do |t,i|
>         puts "#{t} => #{a[i]}"
>         # ...
>     end
> 
> Now, I understand why it happens, but nonethess I spent a good while tracking 
> it down (in a slightly more complex version). I guess that's just the way it 
> has to be, but it is quite unintuitive.

It's doing exactly what you ask: you've send the message
"each_with_index" to an array (namely, a[1..-1]) and Ruby is acting
accordingly.  

Did you want to do something more like:

  (1...a.size).each {|i| puts "#{a[i]}" }

?


David

-- 
David A. Black
dblack@wobblini.net