From: Jonathan Leighton <lists@...>
Date: 2006-01-06T06:25:52+09:00
Subject: Re: Initialization using the Singleton design pattern

On Fri, 2006-01-06 at 03:47 +0900, James Edward Gray II wrote:
> On Jan 5, 2006, at 12:19 PM, Jonathan Leighton wrote:
> 
> > Hi,
> >
> > I have a singleton class, as in one that does "include Singleton". I
> > want to run a few methods when the instance is created. Usually one
> > would do that in initialize(), but obviously I can't do that here.
> 
> Why not?  The object is still constructed:
> 
>  >> require "singleton"
> => true
>  >> class JustOne
>  >>   def initialize
>  >>     puts "initialize() called"
>  >>   end
>  >>   include Singleton
>  >> end
> => JustOne
>  >> JustOne.instance
> initialize() called
> => #<JustOne:0x32321c>
>  >> JustOne.instance
> => #<JustOne:0x32321c>

Okay thanks, I've got it sorted now. I had tried using initialize()
previously but I guess I got put off as what I was doing raised an
exception -- so I assumed you weren't supposed to use initialize()
without thinking about it any harder.

Cheers

-- 
Jonathan Leighton
http://turnipspatch.com/ | http://jonathanleighton.com/ | http://digital-proof.org/