Parameterized module idioms

Tim Fletcher <>
Wed Apr 21 09:19:50 CEST 2010

> The use-case for modules with parameters (if there is one) is
> where there are grounds for believing that there may need to
> be multiple distinct instances of the same module at the same
> time AND where the module parameter cascade is tolerable.

Are there any good examples of this?

What about the motivation described in Richard Carlsson's paper
( about callback module

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