From: Aaron Patterson <tenderlove@...>
Date: 2012-02-25T03:19:19+09:00
Subject: [ruby-core:42861] Re: [ruby-trunk - Feature #6070] The scope of for loop variables


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On Fri, Feb 24, 2012 at 02:25:57PM +0900, Shugo Maeda wrote:
>=20
> Issue #6070 has been updated by Shugo Maeda.
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> File for_loop_scope_fix_2.diff added
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> Hi,
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> Shugo Maeda wrote:
> > There is at least one problem in this patch.  The problem is that it ca=
nnot handle
> > the following code in mkmf.rb.
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> I've fixed my patch to fix the problem.
> By the attached patch, the scope of variables in expr_value is not limite=
d in
> the for expression.
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> I think it's reasonable because
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>   for i in <expr_value>
>   end
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> is equivalent to
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>   <expr_value>.each do |i|
>   end
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> , where <expr_value> is outside the block.

I agree with your opinion regarding the current side effect problems of
`for`.  I would love to see your patch in Ruby 2.0!

--=20
Aaron Patterson
http://tenderlovemaking.com/

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