From: Mathieu Bouchard <matju@...>
Date: 2001-10-04T08:05:45+09:00
Subject: [ruby-talk:22035] Re: Marshal won't dump a Proc

On Thu, 4 Oct 2001, Paul Brannan wrote:
> How about the following?  The only major disadvantage is that it will be a
> little bit slower than using a real Proc:

I wrote this program with Guy Hurst on April 6th. You say that a proc
should keep its source by prepending a % sign just before the
opening-brace.

class Proc
	attr_accessor :source
	class << self
		def _load(aString)
			foo=eval(aString)
			foo.source=aString
			foo
		end
	end
	def _dump(aDepth)
		source or raise "sourceless Proc cannot be dumped"
	end
end


module Kernel
	alias :old_proc :proc
	def Kernel.proc(string=nil,&b)
		if string and b then raise "bad argument, dude" end
		if string then
			Proc._load("proc{#{string}}")
		else
			old_proc(&b)
		end
	end
	def proc(string=nil,&b); Kernel.proc(string,&b); end
end

________________________________________________________________
Mathieu Bouchard                   http://hostname.2y.net/~matju