From: "R. Mark Volkmann" <mark@...>
Date: 2005-06-20T23:23:41+09:00
Subject: Re: preventing instantiation

> On 6/19/05, R. Mark Volkmann <mark@ociweb.com> wrote:
>
> What is the recommended way in Ruby to prevent other classes from
> creating
> instances of a given class?  The class isn't a singleton.  It creates
> several
> instances of itself and no additional instances should be able to be
> created.
>
> When I put the following in my class, it seems that even that class can't
> create instances.
>
> private_class_method :new
>
> I'm confused.  How can I create a few objects within the class and then
> prevent other classes from creating additional instances?

I think I've found the solution I was looking for.  I can use

private_class_method :new

I just have to put that line AFTER I create all the instances I want to allow.

--
R. Mark Volkmann
Partner, Object Computing, Inc.