The Best Haskell eBooks of All Time

Haskell is a purely functional language that allows programmers to rapidly develop clear, concise, and correct software. The language has grown in popularity in recent years, both in teaching and in industry. This book is based on the author's experience of teaching Haskell for more than twenty years. All concepts are explained from first principles and no programming experience is required, making this book accessible to a broad spectrum of readers. While Part I focuses on basic concepts, Part II introduces the reader to more advanced topics.

This new edition has been extensively updated and expanded to include recent and more advanced features of Haskell, new examples and exercises, selected solutions, and freely downloadable lecture slides and example code. The presentation is clean and simple, while also being fully compliant with the latest version of the language, including recent changes concerning applicative, monadic, foldable, and traversable types.

This book is devoted to five main principles of algorithm design: divide and conquer, greedy algorithms, thinning, dynamic programming, and exhaustive search. These principles are presented using Haskell, a purely functional language, leading to simpler explanations and shorter programs than would be obtained with imperative languages. Carefully selected examples, both new and standard, reveal the commonalities and highlight the differences between algorithms. The algorithm developments use equational reasoning where applicable, clarifying the applicability conditions and correctness arguments.

Every chapter concludes with exercises (nearly 300 in total), each with complete answers, allowing the reader to consolidate their understanding and apply the techniques to a range of problems. The book serves students (both undergraduate and postgraduate), researchers, teachers, and professionals who want to know more about what goes into a good algorithm and how such algorithms can be expressed in purely functional terms.

Summary. Get Programming with Haskell introduces you to the Haskell language without drowning you in academic jargon and heavy functional programming theory. By working through 43 easy-to-follow lessons, you'll learn Haskell the best possible way—by doing Haskell! Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology. Programming languages often differ only around the edges—a few keywords, libraries, or platform choices. Haskell gives you an entirely new point of view.

To the software pioneer Alan Kay, a change in perspective can be worth 80 IQ points and Haskellers agree on the dramatic benefits of thinking the Haskell way—thinking functionally, with type safety, mathematical certainty, and more. In this hands-on book, that's exactly what you'll learn to do. About the Book. Get Programming with Haskell leads you through short lessons, examples, and exercises designed to make Haskell your own. It has crystal-clear illustrations and guided practice. You will write and test dozens of interesting programs and dive into custom Haskell modules. You will gain a new perspective on programming plus the practical ability to use Haskell in the everyday world. (The 80 IQ points: not guaranteed.). What's Inside. Thinking in HaskellFunctional programming basicsProgramming in typesReal-world applications for Haskell. About the Reader. Written for readers who know one or more programming languages. About the Author. Will Kurt currently works as a data scientist. He writes a blog at www.countbayesie.com, explaining data science to normal people. Table of Contents. Lesson 1 Getting started with Haskell. Unit 1 - FOUNDATIONS OF FUNCTIONAL PROGRAMMING. Lesson 2 Functions and functional programming. Lesson 3 Lambda functions and lexical scope. Lesson 4 First-class functions. Lesson 5 Closures and partial application. Lesson 6 Lists. Lesson 7 Rules for recursion and pattern matching. Lesson 8 Writing recursive functions. Lesson 9 Higher-order functions. Lesson 10 Capstone: Functional object-oriented programming with robots! Unit 2 - INTRODUCING TYPES. Lesson 11 Type basics. Lesson 12 Creating your own types. Lesson 13 Type classes. Lesson 14 Using type classes. Lesson 15 Capstone: Secret messages! Unit 3 - PROGRAMMING IN TYPES. Lesson 16 Creating types with "and" and "or". Lesson 17 Design by composition—Semigroups and Monoids. Lesson 18 Parameterized types. Lesson 19 The Maybe type: dealing with missing values. Lesson 20 Capstone: Time series. Unit 4 - IO IN HASKELL. Lesson 21 Hello World!—introducing IO types. Lesson 22 Interacting with the command line and lazy I/O. Lesson 23 Working with text and Unicode. Lesson 24 Working with files. Lesson 25 Working with binary data. Lesson 26 Capstone: Processing binary files and book data. Unit 5 - WORKING WITH TYPE IN A CONTEXT. Lesson 27 The Functor type class. Lesson 28 A peek at the Applicative type class: using functions in a context. Lesson 29 Lists as context: a deeper look at the Applicative type class. Lesson 30 Introducing the Monad type class. Lesson 31 Making Monads easier with donotation. Lesson 32 The list monad and list comprehensions. Lesson 33 Capstone: SQL-like queries in Haskell. Unit 6 - ORGANIZING CODE AND BUILDING PROJECTS. Lesson 34 Organizing Haskell code with modules. Lesson 35 Building projects with stack. Lesson 36 Property testing with QuickCheck. Lesson 37 Capstone: Building a prime-number library. Unit 7 - PRACTICAL HASKELL. Lesson 38 Errors in Haskell and the Either type. Lesson 39 Making HTTP requests in Haskell. Lesson 40 Working with JSON data by using Aeson. Lesson 41 Using databases in Haskell. Lesson 42 Efficient, stateful arrays in Haskell. Afterword - What's next? Appendix - Sample answers to exercise.