From: Michal Rokos <rokosm@...>
Date: 2001-10-24T20:11:11+09:00
Subject: [ruby-talk:23176] Re: Instance VARS and C objects

Yukihiro Matsumoto <matz@ruby-lang.org> wrote:
> So why not attributes("virtual_parameters")?
> You have perfect control if you use attributes.
> But you may have unspoken problems.

	Just one reason to allow InstanceVariables is nicer code.

Example:
	(the real class has Cstruct inside)
	class X
		def initialize(ary)
			#C processing to pack array inside
		end
		def ary
			#C processing to export ARY from Cstruct
		end
		def ary=(ary)
			#C processing to pack array in
		end
		#so attribute ary is virtual, bue behaves like array
		#NOW I'd like to have
		def arr<<(member)
			#add member to ary that is packed to Cstruct
		end
		#BUT I CAN'T DEFINE THIS METHOD (because of grammar)
	end

	Got it?

		Michal
		
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Michal Rokos                           Czech Technical University, Prague
E-mail: m.rokos@sh.cvut.cz                                  ICQ: 36118339
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