Rails - May 2008 - Why can't I define vars in caller's binding using eval?

In other words, why can''t I do this?

def f(b)
  eval("x = 10", b)
end

f(binding)
puts "x = #{x}"

Is there any way to make that code work (besides obviously setting x
to something before calling f).

Thanks.
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On 22 May 2008, at 04:39, Christopher J. Bottaro wrote:
>
> In other words, why can''t I do this?
>
> def f(b)
>  eval("x = 10", b)
> end
>
> f(binding)
> puts "x = #{x}"
>
This seems relevant:
http://groups.google.com/group/comp.lang.ruby/browse_thread/thread/a954f8aaf698a0b9/e1c761b71b63b82e?#e1c761b71b63b82e

Fred

> Is there any way to make that code work (besides obviously setting x
> to something before calling f).
>
> Thanks.
> >

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