This post refers to the following code: http://www.ezequal.com/chaos/libs/singleton.h I have developed a templated singleton class which enforces almost every rule of the singleton pattern at compile time. This library provides a very clean, flexible format for client code to implement its own singleton classes which may have dependencies on each other. I have three questions. Does it make any sense to use a template allocator parameter, like the standard container types, to control creation and destruction of my instance, or are new and delete sufficient? Is there any other functionality that should be added? Specifically, is it sufficient to enforce that singletons are created in a specific order before main and destroyed in the reverse order after main (using dependency instances), or should I provide some way to support alternate lifetimes (ex: create on first reference to instance)? Is there any interest in adding this library to Boost?