From: Robert Klemme <shortcutter@...>
Date: 2010-09-23T15:27:55+09:00
Subject: Re: Odd behavior when << hash

On 22.09.2010 21:51, Alex Stahl wrote:
> Thanks, Rob.  Made the mistake of assuming I get a copy of the hash when
> I push it.  IIRC, there are other (not-so-elegant) languages that do so.
>
> Appreciate the point about .dup as well, but since at the end of this,
> I'm just writing everything out to a file, and the elements of ids will
> never change (at least not in this script), I don't think I need a
> duplicate string.

To complement the excellent explanations you have been given already: 
the technical term for the effect is "aliasing".

http://en.wikipedia.org/wiki/Aliasing_(computing)#Aliased_pointers

Kind regards

	robert

-- 
remember.guy do |as, often| as.you_can - without end
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