scalaz/scalaz — pull request #770 by stew (2014-07-06 11:55:31+00:00)
Title: Add AdjunctUsage.scala showing one way of using an adjunction

I'd love to have another example of an adjunction, but I failed to come up with another. I haven't gone back and touched this for a while, so I figure I might as well submit what I had... suggestions for improvements/extensions please!