From: Dave Thomas <Dave@...>
Date: 2000-12-19T04:05:50+09:00
Subject: [ruby-talk:7594] Re: Question about #append_features

"Christoph Rippel" <crippel@primenet.com> writes:

> Hi,
> 
> This snippet is from singleton.rb ...
>  
> module Singleton
>   def Singleton.append_features(klass)
>     klass.private_class_method(:new)
>     klass.instance_eval %{
>     # ...
>     }
>   end
> end 
> 
> How does  #append_features  work ? (it does not show
> in L.to_a  for a regular module L)

It's described briefly at

  http://www.rubycentral.com/ref/ref_c_module.html#append_features

It's the method called when you say 'include'. In this case, Singleton 
is hooking itself, so that when it gets included in a class it can
work its magic.


Regards

Dave