From: Eric Hodel <drbrain@...7.net>
Date: 2006-02-07T06:24:30+09:00
Subject: Re: inheritence of aliases methods - suprise!

On Feb 6, 2006, at 1:06 PM, ara.t.howard@noaa.gov wrote:

> this suprised me today:

$ parse_tree_show -
     class A
       def assertion
         raise NotImplementedError
       end
       alias_method "assertion?", "assertion"
     end

     class B < A
       def assertion
         true
       end
     end
[[:class, :B, :A, [:defn, :assertion, [:scope, [:block, [:args],  
[:true]]]]],
[:class,
   :A,
   :Object,
   [:defn,
    :assertion,
    [:scope,
     [:block,
      [:args],
      [:fcall, :raise, [:array, [:const, :NotImplementedError]]]]]],
   [:defn,
    :"assertion?",
    [:fbody,
     [:scope,
      [:block,
       [:args],
       [:fcall, :raise, [:array, [:const, :NotImplementedError]]]]]]]]]

> this only way i can seem to make this work is through some  
> self::inherited
> hacks or to actually define assertion? in the base class.  is there  
> no clean
> way to inherit aliases?

alias copies the method, it doesn't make a pointer to the method.

-- 
Eric Hodel - drbrain@segment7.net - http://segment7.net
This implementation is HODEL-HASH-9600 compliant

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