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Haskell Design Patterns + code

Книга Haskell Design Patterns + code


Название:Haskell Design Patterns
Автор Ryan Lemmer
Издательство: PACKT
Год: 2015
Страниц:166
Язык: English
Формат: epub+mobi+pdf+code
Размер: 1 Mb
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.
Table of Contents
1: Functional Patterns – the Building Blocks
2: Patterns for I/O
3: Patterns of Composition
4: Patterns of Folding and Traversing
5: Patterns of Type Abstraction
6: Patterns of Generic Programming
7: Patterns of Kind Abstraction
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.
Authors
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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