From: Intransition <transfire@...>
Date: 2011-11-13T05:19:31+09:00
Subject: Advanced Ruby: Eval over multiple Bindings?

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This is an extremely advanced Ruby question. Given:

  def binding1
    a = 1
    binding
  end

  def binding2
    b = 2
    binding
  end

  eval('a', binding1)  #=> 1
  eval('b', binding2)  #=> 2

Is there a way to "merge" the binding to do something like:

  eval('a + b', binding1 + binding2)  #=> 3



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This is an extremely advanced Ruby question. Given:<div><br></div><div>&nbsp; def binding1</div><div>&nbsp; &nbsp; a = 1</div><div>&nbsp; &nbsp; binding</div><div>&nbsp; end</div><div><br></div><div>&nbsp; def binding2</div><div>&nbsp; &nbsp; b = 2</div><div>&nbsp; &nbsp; binding</div><div>&nbsp; end</div><div><br></div><div>&nbsp; eval('a', binding1) &nbsp;#=&gt; 1</div><div>&nbsp; eval('b', binding2) &nbsp;#=&gt; 2<br></div><div><br></div><div>Is there a way to "merge" the binding to do something like:</div><div><br></div><div>&nbsp; eval('a + b', binding1 + binding2) &nbsp;#=&gt; 3<br></div><div><br></div><div><br></div>
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