cujojs/most — pull request #9 by briancavalier (2014-02-03 13:50:53+00:00)
Title: Add first draft Maybe monad, and nothing instance

For discussion, not ready to merge. A Maybe monad with functor, applicative, monad, foldable, semigroup, and monoid, plus a few specialized methods, like isNothing. The nothing value is a singleton to avoid branching in every method.