Factory function with keyword arguments

[Ben Finney]

Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> writes:

> A valuable lesson... always measure before guessing whether code
> will be slow or not.

And after measuring, don't guess then either :-)

-- 
 \                "Science doesn’t work by vote and it doesn’t work by |
  `\          authority." —Richard Dawkins, Big Mistake (The Guardian) |
_o__)                                                                  |
Ben Finney