Write You a Haskell ( Stephen Diehl )

There is nothing more practical than a good theory. — James C. Maxwell Hindley-Milner Inference The Hindley-Milner type system ( also referred to as Damas-Hindley-Milner or HM ) is a family of type systems that admit the serendipitous property of having a tractable algorithm for determining types from untyped syntax. This is achieved by a process known as unification, whereby the types for a well-