From: David Masover <ninja@...>
Date: 2009-12-04T10:31:37+09:00
Subject: Re: Variable references in yaml files

Well, two complaints about this. One, you're top posting, but that's a matter 
of taste...

And two:

On Thursday 03 December 2009 05:34:33 pm dara wrote:
>   value = substitution_hash[value] if value.class == Symbol

I doubt it matters here, but I'd do:

if value.kind_of?(Symbol)

I like to duck-type when I can, and when I can't, this is still closer than 
checking the actual class. (kind_of? checks inheritance -- it would return 
true if it's an instance of a child class of Symbol, or if Symbol was a module 
that it included/extended from, or if it's a class which overrides #kind_of? 
to lie and say it's a Symbol.)

And yes, hash merging is probably the simpler solution.