From: "framefritti@..." <framefritti@...>
Date: 2008-01-10T21:54:58+09:00
Subject: Re: how to remove a method from an object ?



Brian.LeRoux ha scritto:

> class Server
>   attr_accessor :shh
>
>   def initialize(f=false)
>     @shh = f
>   end
>
>   def print
>     if @shh
>       self.send(:method_missing)
>     else
>       puts 'hi there'
>     end
>   end
>
>   def method_missing
>     puts 'I look forward to seeing better ways of doing this!'
>   end
>   #
> end
>
> s = Server.new
> s.print
>
> s2 = Server.new(true)
> s2.print
>
> s.print
>
>
>
>
> On Jan 10, 12:32�am, Valerio Schiavoni <valerio.schiav...@gmail.com>
> wrote:
> > hello everyone,
> >
> > how can I remove a method from an object, without impacting future
> > instances of its class ?
> >
> > say:
> >
> > class Server
> > � �def print
> > � � � �puts 'hello'
> > � �end
> > end
> >
> > s1 = Server.new
> > s1.print #this work
> >
> > #now remove print from s1 somehow..
> >
> > s1.print #this should hit method_missing
> >
> > s2 = Server.new
> > s2.print # this should work fine as well...
> >
> > Thanks for any help

Maybe it is not what the original post asked for, but I could not
resist...

class Server
  def initialize(add_print_method=false)
    if (add_print_method)
      def self.print
	puts "Hi #{self.object_id.to_s(16)}";
      end
    end

    puts "Object #{self.object_id.to_s(16)} created"
  end
end

a=Server.new(true)
b=Server.new

a.print # prints "Hi ..."
b.print # raises NoMethodError