HashProxy

gistfile1.rb

class HashProxy
  instance_methods.each { |meth| undef_method(meth) unless meth =~ /^__/ }
  
  def self.new(delegate)
    return delegate unless delegate.kind_of?(Hash)
    super
  end
  
  def initialize(hash)
    @hash = hash
  end
  
  def method_missing(meth, *args, &block)
    case meth.to_s
    when /^\[\]/    then @hash.send(meth, *args)
    when /^(.*)=$/  then @hash[$1] = *args
    else                 @hash[meth]
    end
  end
end