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Metaprogramming Ruby [0] explains Ruby's handling of scope really well.

Also, you might enjoy a silly gem I wrote a while ago called ghost_attributes [1]. It uses closures to mimic attr_accessor. The funny thing about it is that your ghost attributes are completely inaccessible from outside the object, unlike normal instance variables, which are always reachable via things like instance_variable_get. Fun/weird stuff :)

[0] http://www.amazon.com/Metaprogramming-Ruby-Program-Like-Pros...

[1] https://github.com/happy4crazy/ghost_attributes

Crazy! Yeah, Metaprogramming Ruby is on my wishlist. I understand why the rules in Ruby are complicated - it's to make the common case simpler. But I still like the simplicity of JavaScript.

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