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Posted By

allnatural on 04/28/09


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class simple Singleton


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Simple Singleton Template

 / Published in: ActionScript 3
 

URL: http://www.destroyyourcomputer.com

Easily create a SINGLE USE ONLY (Singleton) Class Object with this template.

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  1. package {
  2. 	public class Example {
  3. 		private static var instance:Example;
  4.  
  5. 		public function Example(access:Access){
  6. 			if (access != null) {
  7. 				if (Example.instance == null){
  8. 					Example.instance = this;
  9. 				}
  10. 			} else {
  11. 				throw new Error(”Illegal operation”);
  12. 			}
  13. 		}
  14.  
  15. 		//provides access to singleton instance
  16. 		public static function getInstance():Example{
  17. 			if (instance == null){
  18. 				instance = new Example();
  19. 			}
  20. 			return Example;
  21. 		}
  22. 	}
  23. }

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Posted By: joshpope on October 13, 2009

this is incorrect in several areas and would never work as is.

It should be this:

I've renamed example to Functions (as thats how i needed it) package {

public class Functions {

    private static var instance:Functions;

    public function Functions(access:Access){
        if (access != null) {
            if (Functions.instance == null){
                Functions.instance = this;
            }
        } else {
            throw new Error("Illegal operation");
        }
    }

    //provides access to singleton instance
    public static function getInstance():Functions{
        if (instance == null){
            instance = new Functions(new Access);
        }
        return instance;
    }
}

}

class Access {}

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