Hello Neil!

Replying to a message of Neil Heller to Bo Simonsen:

 NH> A singleton is one of the design patterns.  As the name implies, there 
 NH> is only one instance (at most) of it created.  You can think of it in 
 NH> the same way you might think of a DLL.

A DLL can be a singleton for an entire system, but requires a lot more
thought about how to control access, especially using semaphores.

Darin

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