Get Programming with Haskell, Will Kurt

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!

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 Haskell

Functional programming basics

Programming in types

Real-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

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