Haskell Design Patterns, by Ryan Lemmer
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Haskell Design Patterns, by Ryan Lemmer
PDF Ebook Haskell Design Patterns, by Ryan Lemmer
Take your Haskell and functional programming skills to the next level by exploring new idioms and design patterns
About This Book
- Explore Haskell on a higher level through idioms and patterns
- Get an in-depth look into the three strongholds of Haskell: higher-order functions, the Type system, and Lazy evaluation
- Expand your understanding of Haskell and functional programming, one line of executable code at a time
Who This Book Is For
If you're a Haskell programmer with a firm grasp of the basics and ready to move more deeply into modern idiomatic Haskell programming, then this book is for you.
What You Will Learn
- Understand the relationship between the “Gang of Four” OOP Design Patterns and Haskell
- Try out three ways of Streaming I/O: imperative, Lazy, and Iteratee based
- Explore the pervasive pattern of Composition: from function composition through to high-level composition with Lenses
- Synthesize Functor, Applicative, Arrow and Monad in a single conceptual framework
- Follow the grand arc of Fold and Map on lists all the way to their culmination in Lenses and Generic Programming
- Get a taste of Type-level programming in Haskell and how this relates to dependently-typed programming
- Retrace the evolution, one key language extension at a time, of the Haskell Type and Kind systems
- Place the elements of modern Haskell in a historical framework
In Detail
Design patterns and idioms can widen our perspective by showing us where to look, what to look at, and ultimately how to see what we are looking at. At their best, patterns are a shorthand method of communicating better ways to code (writing less, more maintainable, and more efficient code).
This book starts with Haskell 98 and through the lens of patterns and idioms investigates the key advances and programming styles that together make "modern Haskell". Your journey begins with the three pillars of Haskell. Then you'll experience the problem with Lazy I/O, together with a solution. You'll also trace the hierarchy formed by Functor, Applicative, Arrow, and Monad. Next you'll explore how Fold and Map are generalized by Foldable and Traversable, which in turn is unified in a broader context by functional Lenses. You'll delve more deeply into the Type system, which will prepare you for an overview of Generic programming. In conclusion you go to the edge of Haskell by investigating the Kind system and how this relates to Dependently-typed programming.
Style and approach
Using short pieces of executable code, this guide gradually explores the broad pattern landscape of modern Haskell. Ideas are presented in their historical context and arrived at through intuitive derivations, always with a focus on the problems they solve.
Haskell Design Patterns, by Ryan Lemmer- Amazon Sales Rank: #1040749 in Books
- Published on: 2015-10
- Released on: 2015-11-06
- Original language: English
- Number of items: 1
- Dimensions: 9.25" h x .38" w x 7.50" l, .65 pounds
- Binding: Paperback
- 157 pages
About the Author
Ryan Lemmer
Ryan Lemmer is software maker, coach, and strategic advisor based in Cape Town. With a background in mathematics and computer science and 20 years of developing software in the trenches, Ryan remains inspired and humbled by the process of creating and evolving software. Ryan is a polyglot programmer, who prefers to think in Haskell. He loves to learn and facilitate learning for others.
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Most helpful customer reviews
22 of 22 people found the following review helpful. Worst Haskell book I've ever seen By Rein Henrichs TL;DR: This is a terrible Haskell book, and a terrible book full stop. Don't waste your money.This book contains numerous grammar and spelling errors, to the point where I am convinced that it has not been edited at all. Some of the examples don't even parse. Others are nonsensical and could not possibly do what the author claims that they do. I am convinced that this book has not had any technical review whatsoever. The author makes basic mistakes like claiming that (a function equivalent to) `foldl` operates in constant space, which is a property of `foldl'` and requires strictness annotations. There isn't a single section of this book without inexcusable grammar, spelling, and technical errors.
0 of 1 people found the following review helpful. Write Cleaner Code with Haskell Design Patterns By Winston The author teaches readers how to use Haskell Although you will not learn the Gang of Four design patterns, readers will benefit from learning functional programming with Haskell. FYI any reader must note that the book mainly uses the GHC compiler.I enjoyed the authors explanation of Recursion, pattern matching, and polymorphism.
0 of 1 people found the following review helpful. 5/5 Excellent Coverage, Clearly Explained. By Bill Jones I enjoyed reading over this book, Haskell Design Patterns helps approach real world situations that you will experience at one time or another as a programmer. Recursion was covered nicely, my favorite functions are the I/O functions which are covered in Chapter 2.
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