From: Phrogz <phrogz@...>
Date: 2010-04-01T02:35:27+09:00
Subject: Re: Pop Quiz: aliasing versus wrapping

On Mar 31, 3:19 am, Robert Klemme <shortcut...@googlemail.com> wrote:
> 2010/3/31 Phrogz <phr...@mac.com>:
>
> > Below are two files that differ only in the 2nd line of code in each.
> > Can you guess what difference they will reveal? I must admit I was
> > surprised when I ran into this.
>
> > $ cat alias.rb
> >  class Object
> >    alias_method :to_js, :inspect
> >  end
>
> This one always invokes Object#inspect - unless you override #to_js explicitly.

Yes; specifically, in this case, Object#inspect on a String calls
#to_s (because it's defined), so:
puts "foo".to_js
#=> foo
instead of the desired "foo" (with quotes).