From: Michal Rokos <rokosm@...>
Date: 2002-02-23T15:41:03+09:00
Subject: Re: dispatching and class references

Alexander Schofield <pcs3@mailhost.njit.edu> wrote:
> It does, but there's also an issue here about where does it end that all
> languages face.  Like what about protecting an object from its class?:
> irb(main):001:0> class C
> irb(main):002:1> end
> nil
> irb(main):003:0> c = C.new
> #<C:0x46033a0>
> irb(main):004:0> c.freeze
> #<C:0x46033a0>
> irb(main):005:0> class C
> irb(main):006:1> def m
> irb(main):007:2> puts 'boo!'
> irb(main):008:2> end
> irb(main):009:1> end
> nil
> irb(main):010:0> c.m
> boo!
> nil


	You can do this, if you set appropriates $SAFE level.


> 
> Object is a class, the ancestor of everything.  You can have a
> #deep_freeze method, but its behavior will always leave a large portion
> of people complaining that it's counter-intuitive, or it should do X
> instead of Y...
> 

	Should 'standard' freeze method behave like deep_freeze?

	
> Paul Brannan wrote:
>> 
>> On Sat, Feb 23, 2002 at 07:00:33AM +0900, Michal Rokos wrote:
>> >       Do we need deep_freeze?
>> 
>> Sounds like something out of a bad movie :)
>> 
>> Paul


	Paul: Do you think that there is no need for method like
	"deep_freeze"? (I don't care about name - you know what it
	should do.)

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