Synopses & Reviews
If you have an imperative (and probably object-oriented) programming background, Becoming Functional will help you through the sometimes alien world of functional programming. Many functional programming books begin by focusing on the more difficult concepts such as recursion and immutability. This book lets you dive right in to functional programming by teaching the most useful implementation concepts first.
Once you finish a chapter, youll be able to take the concept you just learned and use it in your current day-to-day job. Each chapter introduces a problem and investigates ways to solve it by going from imperative pseudo-code to functional pseudo-code.
If you have an imperative (and probably object-oriented) programming background, this hands-on book will guide you through the alien world of functional programming. Author Joshua Backfield begins slowly by showing you how to apply the most useful implementation concepts before taking you further into functional-style concepts and practices.
In each chapter, you ll learn a functional concept and then use it to refactor the fictional XXY company s imperative-style legacy code, writing and testing the functional code yourself. As you progress through the book, you ll migrate from Java 7 to Groovy and finally to Scala as the need for better functional language support gradually increases.
- Learn why today s finely tuned applications work better with functional code
- Transform imperative-style patterns into functional code, following basic steps
- Get up to speed with Groovy and Scala through examples
- Understand how first-class functions are passed and returned from other functions
- Convert existing methods into pure functions, and loops into recursive methods
- Change mutable variables into immutable variables
- Get hands-on experience with statements and nonstrict evaluations
- Use functional programming alongside object-oriented design
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