From: Hal Fulton <hal9000@...>
Date: 2004-01-15T13:55:44+09:00
Subject: Re: Nested scopes and the Singleton pattern

nobu.nokada@softhome.net wrote:
> Hi,
> 
> At Thu, 15 Jan 2004 13:24:19 +0900,
> Hal Fulton wrote:
> 
>>>>First question: Is this a valid way to implement Singleton, or am I
>>>>overlooking something?
>>
>> >
>> > Have you considered about race conditions?
>>
>>Thank you, Nobu. No, I did not consider race conditions.
>>
>>I suppose singleton.rb is thread safe?
> 
> 
> Just using Thread.critical.  And seems close to your idea
> excepting for it uses "instance" method rather than "new".

Actually I like "new" instead of "instance". I guess this
(instance) is to emphasize that there can only be one. But
I prefer simply calling new as usual, which was why I did this.

Hal