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      Maybe Haskell

      Programming Without Null

      What would it be like to program in a language without the frustrating concept of null? In our new book, 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.

      Download a free sample.

      Who is this book for?

      You might have no Haskell knowledge at all, but you’re interested in exploring a functional language. Perhaps you’ve heard others talk about Monads and want to know more. Maybe (heh) you’re interested in a different approach to handling missing values.

      This book won’t teach you Haskell. It will teach you just enough Haskell, in a short amount of time, that you can understand its explanation of some cool, pragmatic functional stuff. You might even take these concepts back to your object-oriented language.

      Hopefully you’ll be motivated to make the time to actually learn Haskell from another resource after reading Maybe Haskell.

      More than just a book

      The book is written using Markdown and distributed via GitHub. When you purchase, we give you access directly to the repository, so you can use the GitHub issues features to give us feedback about what we’ve written and what you’d like to see.

      This also means that you’ll be the first to know when new content has been added to the book, and have the easiest time getting it.

      Table of Contents

      Introduction

      • An Alternate Solution
      • Required Experience
      • Structure
      • What This Book is Not

      Haskell Basics

      • Operators
      • Our Own Data Types
      • Pattern Matching
      • Sum Types
      • Kinds and Parameters
      • Maybe
      • Don't Give Up

      Functor

      • Choices
      • Discovering a Functor
      • About Type Classes
      • Functor
      • The Functor Laws
      • Why Is This Useful?
      • Curried Form
      • Partial Application

      Applicative

      • Hiding Details
      • Follow the Types
      • Apply
      • Chaining
      • Applicative In the Wild

      Monad

      • More Power
      • And Then?
      • Bind
      • Chaining
      • Do Notation
      • Will it Pipe?
      • Wrapping Up

      Other Types

      • Either
      • List
      • IO

      Maybe Haskell was written by Pat Brisbin.

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      • You'll get .pdf, .mobi, .epub, and .html files
      • PDF Length 94 pages

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      Your rental will be available for 30 days. Once started, you’ll have 72 hours to watch it as much as you’d like!

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        Gumroad Library

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        Thank you for your purchase!

        If you’re not happy, just let us know within 30 days and we’ll refund your money. It’s as simple as that.

        You'll be added to GitHub soon, where you can follow along with progress and interact with the author.