The true nature of the Singleton pattern

My lightning talk from SCNA 2013 in which I explain (in 5 minutes) why this is a pattern not a class and describe the various concerns that constitute this pattern: policy, environment, mechanism and subject.

Transcript

1. THE TRUE NATURE OF THE SINGLETON PATTERN Ade Oshineye
2. GOOD VS EVIL
4. EMPTY THE CUP
5. POLICY ENVIRONMENT
6. MECHANISM SUBJECT
7. Ceci n’est pas une Singleton
8. PATTERN NOT A CLASS