Maybe Haskell

What would it be like to program in a language without the frustrating concept of null? In Maybe Haskell, we explore exactly this. Haskell takes the idea that some values may not be present and makes it a first-class concept in the type system. In this book, you'll learn just enough Haskell to really see how this idea works in practice. Targeted at experienced developers interested in taking a dip into functional languages, Maybe Haskell is a cool taste of a different way of solving problems.