Mike Gold wrote:
If all assignments were the same, this would print '3':
> 
>   eval("a = 3", binding)
>   puts a
> 

Or even better,

  eval("a = 3", binding)
  p local_variables  #=> ["a"]
  p a  #=> undefined local variable or method `a'

We see that the local exists, but because the parser has not seen the "a 
= ..." syntax, we can't access it.
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