From: Rolf Pedersen <rolfhsp@...>
Date: 2011-02-07T06:23:17+09:00
Subject: Re: Setter method for Hash value

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2011/2/4 Jes=FAs Gabriel y Gal=E1n <jgabrielygalan@gmail.com>

> For the other two, you need a proxy object that can delegate [] and
> []=3D to DataClass too. For this to work, MyClass#props needs to wrap
> the actual hash returned by DataClass with a wrapper object (Props).
> As you need this proxy object to have some hash like behaviour, you
> can implement whatever methods you need to behave like a hash. As an
> example, apart from [] and []=3D I have implemented inspect and to_s.
>
>
Instead of implementing other methods to make the wrapper object behave mor=
e
like a Hash object, why not let Props inherit Hash, and just redefine those
methods that I need to behave differently? Perhaps like this:

class Props < Hash
  def initialize h
    replace h
  end
  def [](key)
    ...
  end
  def []=3D(key, value)
    ...
  end
end


Best regards,
-Rolf

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