Scala Monads

An introduction to the Monads idiom using Scala. Main reference:

• Monads For Functional Programming (P. Wadler)

Additional references:

• The Quick Essence of Functional Programming (video from Prof. Ralf Lammel)
• Software extension and integration with type classes (R. Lammel and K. Ostermann)

Branches

• master: the very basic implementation of an interpreter for simple expressions
• error: supporting error handling without using monads
• monads: a first attempt to implement a monadic version of the interpreter
• monad-operator: refactoring of the bind function to an infix operator
• cats: an implementation of M as an instance of the Monad type class