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Re: Automagic instantiation of singletons?
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Re: Automagic instantiation of singletons?


  • Subject: Re: Automagic instantiation of singletons?
  • From: Shawn Erickson <email@hidden>
  • Date: Fri, 18 Nov 2005 07:47:05 -0800


On Nov 18, 2005, at 4:47 AM, Jonathan del Strother wrote:

Is there any way to persuade a singleton object to create itself? I have a few singleton objects that need to exist throughout the lifetime of the application, and am currently instantiating them in my application controller's applicationDidFinishLaunching: method.

It would be nice if I didn't have to explicitly do this. My initial thought was that you could do it through the singletons' + (void)initialize method - but of course, this isn't called at application startup - it's only called the first time you try and access the object, so it still needs to be manually set up.


Any other suggestions? I suspect it's not actually possible, but thought I'd throw it out to the obj-c gurus and see what they have to say...


Apple take on this...
<http://developer.apple.com/documentation/Cocoa/Conceptual/ CocoaObjects/Articles/CreateSingleton.html>


Others...
<http://www.cocoadev.com/index.pl?SingletonDesignPattern>
<http://www.cocoadev.com/index.pl?FTSWAbstractSingleton>

-Shawn
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References: 
 >Automagic instantiation of singletons? (From: Jonathan del Strother <email@hidden>)

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