From: "Brian Schröder" <ruby@...>
Date: 2004-12-03T02:22:07+09:00
Subject: Re: nested defs, what if...

On Thu, 2 Dec 2004 23:57:09 +0900
Austin Ziegler <halostatue@gmail.com> wrote:

> On Thu, 2 Dec 2004 23:44:08 +0900, Hugh Sasse Staff Elec Eng
> <hgs@dmu.ac.uk> wrote:
> > This is too half-baked to be an RCR, but here goes...
> > 
> > At the moment we cannot write
> > 
> > class Thingy
> >    def somefunc
> >      def newfunc
> >        ...
> >      end
> >    end
> > end
> 
> irb(main):001:0> class Thingy
> irb(main):002:1>   def somefunc
> irb(main):003:2>     def newfunc
> irb(main):004:3>     end
> irb(main):005:2>   end
> irb(main):006:1> end
> irb(main):007:0> Thingy.instance_methods.grep(/func/)
> => ["somefunc"]
> irb(main):009:0> Thingy.new.somefunc
> => nil
> irb(main):010:0> Thingy.instance_methods.grep(/func/)
> => ["newfunc", "somefunc"]
> 

But where is this usefull? It seems only complicated and inefficent to me
(Doesn't it create a new instance method on each call?):

class A
  def a() 
    def b() 
      self
    end
    self
  end
end
    ==>nil
A.new.b
NoMethodError: undefined method `b' for #<A:0x402c0834>
        from (irb):2
A.new.a
    ==>#<A:0x402a9cb0>
A.new.a.b
    ==>#<A:0x4029bad4>
A.new.b
    ==>#<A:0x40295864>

-- 
Brian Schr�der
http://www.brian-schroeder.de/