From: Gavin Sinclair <gsinclair@...>
Date: 2003-11-17T22:23:27+09:00
Subject: Re: Yet Another Rite Thought: method combination

On Monday, November 17, 2003, 6:22:18 PM, gabriele wrote:

> I just looked at matz' slides and I don't have a clear understanding
> of ho9w this is suposed to work.

> Possibly this has been explained verbosely, But I can't get it from
> the slide.

> So, this is the example:

> class Foo
>  def foo(*args)       #1
>    p 'foo'
>  end
>  def foo:pre (*args ) #2
>   p 'pre'
>  end
>  def foo:post (*args) #3
>   p 'post'
>  end
>  def foo:wrap (*args) #4
>   p 'wrap pre'
>   super
>   p 'wrap post'
>  end
> end

> now: what are pre post and wrap?

> [...]

> someone would please explain this to me ?


The slide demonstrates it adequately.  Given the above code:

  Foo.new.foo
  # Output:
  #   wrap pre
  #   pre
  #   foo
  #   post
  #   wrap post

Gavin