byorgey/diagrams-lib — pull request #3 by ian-ross (2011-11-04 22:49:05+00:00)
Title: Issue 48: 2D specialization of 'beside' which takes an angle instead of a vector

I've called the thing "atAngle". Then you can define things like

(///) = atAngle (1/8 :: CircleFrac)

which looks kind of nice and natural.