From: Austin Ziegler <austin@...>
Date: 2003-04-19T10:41:51+09:00
Subject: Re: Extend initialize method in String Class

On Sat, 19 Apr 2003 08:35:30 +0900, Bilbo wrote:
> require 'win32ole'
> 
> class String
>   def initialize (v)
>     @s = WIN32OLE.new('Apputility.clString')
>     @s.assign = v
>     String.initialize (v)
>   end
> 
>   def countOf (v)
>     @s.countof(v)
>   end
> end

Use Module#alias_method.

  class String
    alias_method :__initialize__, :initialize

    def initialize(v)
      @s = WIN32OLE.new('Apputility.clString')
      @s.assign = v
      __initialize__(v)
    end

    attr_reader :s
  end

However, note that this will only work for cases where you do
String#new directly; it will not work for automatically generated
strings (e.g., s = "foo").

> The user programmer would code something like:
>   myString = "hello world"
>   puts myString.countOf('o')
> or
>   myString = String.new("hello world")
>   puts myString.countOf('o')

The user programmer doesn't need to use the Win32OLE version of
countOf. You can use String#count, though:

  "Hello world".count("o") # => 2

-austin
-- Austin Ziegler, austin@halostatue.ca on 2003.04.18 at 21:41:18