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Contents of the Book

• day 0
• What is polymorphism?
• sum function
• FoldLeft
• Method injection (enrich my library)
• day 1
• sbt
• Equal
• Order
• Show
• Read
• Enum
• Bounded
• Num
• typeclasses 102
• a Yes-No typeclass
• day 2
• Functor
• Applicative
• day 3
• Kinds and some type-foo
• Tagged type
• About those Monoids
• day 4
• Functor Laws
• Option as Monoid
• Foldable
• day 5
• A fist full of Monads
• Walk the line
• List Monad
• MonadPlus and the guard function
• A knight’s quest
• Monad laws
• day 6
• Writer? I hardly knew her!
• Reader
• day 7
• Applicative Builder
• Tasteful stateful computations
• \/
• Validation
• day 8
• Some useful monadic functions
• Making a safe RPN calculator
• Composing monadic functions
• Making monads
• day 9
• Tree
• Zipper
• Id
• Lawless typeclasses
• day 10
• Monad transformers
• day 11
• Lens
• day 12
• Origami programming
• The Essence of the Iterator Pattern
• day 13 (import guide)
• day 14
• day 15
• Arrow
• Unapply
• parallel composition
• day 16
• Memo
• functional programming
• Effect system
• day 17
• IO Monad
• Enumeration-Based I/O with Iteratees
• day 18
• Func
• Free Monad
• Stackless Scala with Free Monads
• day 19
• Category theory
• Point
• Isomorphisms
• Determination and choice
• day 20
• Examples of categories
• Initial and terminal objects
• Products
• Duality
• day 21
• Coproducts
• Hom-sets
• Natural Transformation
• Thanks for reading
• Scalaz cheatsheet
• Contents in Depth

Book Description

Learning Scalaz isn’t just another programming manualit’s your backstage pass to the Scala universe. This book opens up the core concepts of functional programming using the Scalaz library, making even the trickiest ideas feel approachable. You’ll find hands-on exercises, real-world use cases, and a few clever jokes sprinkled in (because hey, why shouldn’t coding be fun?). If you want to move beyond basic Scala and really get what makes functional programming tick, this book is a must-read.

Book Overview

Ever stared at Scala code and thought, “Wait, what does that even do?” You’re not alone! Learning Scalaz walks you through everything from monads to functors without leaving you scratching your head. The author breaks down complex topics into bite-sized piecesno dry lectures here. Plus, you’ll see how Scalaz compares with other languages and libraries. For example, if you’ve checked out Learning GNU C, you’ll notice some familiar problem-solving approaches but with a functional twist.

Why Read This Book

Let’s face it: functional programming can sound intimidating. But with Learning Scalaz, you’ll see it’s not just for math geeks or language purists. This book shows you how to write code that’s easier to test, debug, and scale (pun intended!). And if you’ve dabbled in other languagesmaybe even explored Learning Luayou’ll appreciate how Scalaz brings powerful abstractions right into your hands. Expect plenty of “aha!” moments along the way.

Who This Book Is For

If you’re a Scala developer itching to master advanced libraries, this one’s for you. Maybe you’re a Java convert curious about functional techniques? Or perhaps you just love learning new programming paradigms? Either way, Learning Scalaz keeps things accessible without watering down the good stuff. You don’t need a PhD in computer sciencejust some curiosity and a willingness to try new things.

What You Will Learn

• Core principles of functional programming in Scala
• How to use monads, functors, and applicatives in real projects
• Ways to refactor legacy code using Scalaz patterns
• Taming side effects for safer, more reliable applications
• Practical tips for leveraging type classes and advanced abstractions
• Comparisons between Scalaz and other popular libraries
• How to write code that’s both elegant and efficient (yes, it’s possible!)

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