twitter/algebird — pull request #103 by asiegel34 (2013-01-23 00:30:26+00:00)
Title: EventuallySemigroup, etc

Draft of code for algebraic structures with multiple representations. An EventuallySemigroup[L,R] extends Semigroup[Either[L,R]], switching dynamically from L to R (but never R to L) according to a given homomorphism. See code comment in Eventually.scala for details.