From: "Luca (Email)" <luca.pagano@...>
Date: 2011-12-29T15:53:03+09:00
Subject: I: Binding#with

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Da: Intransition [mailto:transfire@gmail.com]=20
Inviato: luned=EC 14 novembre 2011 03:31
A: ruby-talk ML; ruby-talk-google@googlegroups.com
Oggetto: Binding#with
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Binding#with
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    def with(_local_variables)
      eval("Proc.new{ |#{_local_variables.keys.join(',')}| binding
}").call(*_local_variables.values)
    end
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Try it:
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    b =3D binding.with(:a=3D>1)
    b.eval('a')  #=3D> 1
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Now, it there a way to add a "yield" to the binding? I tried:
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  def with(_local_variables, &_yields)
    eval("lambda{ |#{_local_variables.keys.join(',')},&yields| binding
}").call(*_local_variables.values, &_yields)
  end
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    b =3D binding.with{ |x| x+x}
    b.eval('yields[1]')  #=3D> 2
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but
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    b.eval('yield(1)')  #=3D> Error
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