From: Brad Hilton <bhilton@...>
Date: 2002-09-12T08:22:07+09:00
Subject: instance_eval with a block

Hello,

Can someone please explain why the following code doesn't work?

P.S.  If I move the methods out of class 'TestEval', things work as
expected.  I'm guessing it has to do with Binding or some such trickery,
but I'm stumped.

Thanks,
-Brad

---------------
class TestEval
  def install_attrs(attrs)
    attrs.each { |k, v|
      type.send(:attr_accessor, k)
      send("#{k}=", v)
    }
  end

  def output(params, block)
    install_attrs(params)
    instance_eval { block.call }
  end
end # class TestEval

block = proc { @name }

test = TestEval.new

params = {
  'name' => 'Joe',
}

puts test.output(params, block)

params['name'] = 'Marty'
puts test.output(params, block)

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