From: "David A. Black" <dblack@...>
Date: 2005-01-18T02:11:49+09:00
Subject: Re: Fwd: [suby-ruby] Your all time desired fundamental Ruby mod

Hi --

On Tue, 18 Jan 2005, trans.  (T. Onoma) wrote:

> On Monday 17 January 2005 11:19 am, David A. Black wrote:
>
> | It strikes me as a perfectly idiomatic way of writing a "getter"
> | method with a default value.  I call it "polite" because it sets up a
> | situation where what will happen is that the object will be sent a
> | message and handle it.
>
> But its not just idiomatic, its functional. For instance what if nil is a
> valid value. But worse every time you read the value via the getter you are
> also potentially calling a setter too. Its not a complete substitute for
> initializing the instance var. Also problems can arise in meta-programming
> when one does use instance_variable_get.
>
> | How would you have done it?
>
> There really needs to be a way to guarantee an initialization at each level of
> the class hierarchy.

I think we have to agree on a parting of the ways on this at this
point :-)


David

-- 
David A. Black
dblack@wobblini.net