From: "Vincent L." <like.space@...>
Date: 2008-06-04T19:57:08+09:00
Subject: Re: instance_eval, regexp with block : losing $1

Vincent L. wrote:
> I finally managed to get it to work :
> 
> class Base
>   def self.match(name, regexp, &block)
>     define_method(name) do |text|
>       puts "#{text}"
>       text.gsub!(regexp) do
>         #hack to restore magical $~ (and so $1, $2, etc.) in block
>         eval('lambda{|x| $~ = x}', block).call($~)
>         block.call #or instance_eval(&block)

instance_eval(&block) works definitely better here.

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