From: Brian Candler <lists@...>
Date: 2012-04-29T18:43:59+09:00
Subject: Re: list local_variables in a def by means of a method

Ronnie Aa wrote in post #1058797:
> Thank you Bartosz
>
> I can work from here!

Aside: every time you pass a block, you are also passing a binding 
implicitly. So you can change this to:

class A
  def stuff
    a = 4
    foo = 'asd'
    list_vars {}
  end

  def list_vars &blk
    bnd = blk.binding
    bnd.eval('local_variables').each{|var|
      val = bnd.eval(var.to_s)
      puts "#{var} is #{val.class} and is equal to #{val.inspect}"
    }
  end
end

A.new.stuff

If you can think of something useful to do with the block, then it will 
look less odd than passing an empty one :-)

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