Senin, 09 September 2013

[U699.Ebook] Download Ebook Functional Programming in Java: Harnessing the Power Of Java 8 Lambda Expressions, by Venkat Subramaniam

Download Ebook Functional Programming in Java: Harnessing the Power Of Java 8 Lambda Expressions, by Venkat Subramaniam

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Functional Programming in Java: Harnessing the Power Of Java 8 Lambda Expressions, by Venkat Subramaniam

Functional Programming in Java: Harnessing the Power Of Java 8 Lambda Expressions, by Venkat Subramaniam



Functional Programming in Java: Harnessing the Power Of Java 8 Lambda Expressions, by Venkat Subramaniam

Download Ebook Functional Programming in Java: Harnessing the Power Of Java 8 Lambda Expressions, by Venkat Subramaniam

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Functional Programming in Java: Harnessing the Power Of Java 8 Lambda Expressions, by Venkat Subramaniam

Intermediate level, for programmers fairly familiar with Java, but new to the functional style of programming and lambda expressions.

Get ready to program in a whole new way. Functional Programming in Java will help you quickly get on top of the new, essential Java 8 language features and the functional style that will change and improve your code. This short, targeted book will help you make the paradigm shift from the old imperative way to a less error-prone, more elegant, and concise coding style that's also a breeze to parallelize. You'll explore the syntax and semantics of lambda expressions, method and constructor references, and functional interfaces. You'll design and write applications better using the new standards in Java 8 and the JDK.

Lambda expressions are lightweight, highly concise anonymous methods backed by functional interfaces in Java 8. You can use them to leap forward into a whole new world of programming in Java. With functional programming capabilities, which have been around for decades in other languages, you can now write elegant, concise, less error-prone code using standard Java. This book will guide you though the paradigm change, offer the essential details about the new features, and show you how to transition from your old way of coding to an improved style.

In this book you'll see popular design patterns, such as decorator, builder, and strategy, come to life to solve common design problems, but with little ceremony and effort. With these new capabilities in hand, Functional Programming in Java will help you pick up techniques to implement designs that were beyond easy reach in earlier versions of Java. You'll see how you can reap the benefits of tail call optimization, memoization, and effortless parallelization techniques.

Java 8 will change the way you write applications. If you're eager to take advantage of the new features in the language, this is the book for you.

What you need:

Java 8 with support for lambda expressions and the JDK is required to make use of the concepts and the examples in this book.

  • Sales Rank: #188425 in Books
  • Published on: 2014-03-01
  • Original language: English
  • Number of items: 1
  • Dimensions: 9.25" h x .42" w x 7.52" l, .76 pounds
  • Binding: Paperback
  • 160 pages

About the Author

Dr. Venkat Subramaniam is an award-winning author, founder of Agile Developer, Inc., and an adjunct faculty at the University of Houston. He has trained and mentored thousands of software developers in the US, Canada, Europe, and Asia, and is a regularly invited speaker at several international conferences. He's (co)author of multiple books, including the 2007 Jolt Productivity award winning book Practices of an Agile Developer.

Most helpful customer reviews

8 of 9 people found the following review helpful.
Perfect explanation of functional style of programming
By Maciej Pyszka
The functional programming is a hot topic these days as it can potentially be the effective response to necessity of adopting software to multicore hardware architecture. In effect, the elements of functional programming have been successively introduced into all mainstream languages, most of which gained these features quite long time ago. Java had lacked these facilities until the version 8 was released. Fortunately, that version catches it up and brings this language back to the family of modern languages.
This book explains very clearly and profoundly all functional elements introduced into Java. What is the most important, the author always tries to confront the functional approach with the traditional, imperative style of programming. As a result, the reader gains the clear comparison between these two different styles of programming.
The author of this book is the additional factor assuring reader satisfaction. Venkat Subramaniam is the recognized and experienced expert in the domain of programming languages without whom hardly any reputable conference about Java can be held. If his perfect teaching skills and sense of humour are also taken into account, further encouraging to reading this book seems unnecessary.
Finally, I must admit that the community of software developers have just been enriched by the next valuable book. If you want to catch on the main sense of functional approach and get benefits from its declarative style and better scalability, you must definitely read this book.

3 of 3 people found the following review helpful.
Excellent guide for experienced Java developers
By David Geary
This is an excellent book for experienced Java developers who want to learn the new functional programming (FP) aspects of Java 8. Highly recommended.

Throughout the book, Venkat shows how to implement simple examples that are easy to wrap your head around using the old imperative style of Java, and then rewrites the examples using FP. That approach is very effective and accomplishes two things:

1. Having both imperative and FP implementations of the same examples make it much easier to understand the FP implementations because experienced Java developers can relate FP to the way they're used to writing code. Without the imperative versions, I don't think the FP versions would be nearly as clear to experienced Java developers without a FP background.

2. The differences between the imperative and FP versions of the code are striking. The FP versions are shorter, simpler, and once you are comfortable with the FP constructs, easier to understand. And by avoiding mutable objects, you don't have to deal with trying to get your code to work properly in a multi-threaded environment - something that is nearly impossible with imperative Java.

The main difference between imperative and FP is that with the former, you specify how you want to do things, whereas with FP, you specify only what you want to do, leaving the details to FP constructs such as the map() function. Venkat's approach makes that difference abundantly clear.

If you're new to Java, then this is probably not the book for you. However, if you've been writing imperative Java code for a while, I can't imagine a better way to learn the functional aspects of Java 8.

Finally, it's important to realize that Java 8 adds FP on top of imperative Java, which reminds me of the way C++ added OOP on top of C. As a result, some of the FP aspects of Java 8 are not as simple as in functional languages built with FP from the ground up, such as Clojure. Java 8 does not have first class functions, for example, so things like the Functional interface are a bit convoluted. Venkat does a fine job of guiding you through those rough spots, however.

Disclaimer: Venkat is a friend that I've known for a long time.

5 of 5 people found the following review helpful.
Basic introduction to functional programming for the traditional Java OO programmer
By Heavy Reader
Venkat is an electric, hilarious, and knowledgable public speaker which prompted my purchase of this book. I was disappointed as it is very introductory. If you've followed any of his Scala talks or know the basics of functional programming, this book doesn't offer more content. The book is probably targeting complete functional newbies, and that is fine, but I was disappointed. I would still recommend his unique and creative presentations on YouTube or live if you can.

See all 18 customer reviews...

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