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MessagePosté le: Sam 8 Juil - 04:35 (2017)    Sujet du message: Learning Java Lambdas Répondre en citant




Understand and utilize Java Lambdas
<h2>About This Book</h2><ul><li>Take a deep dive into one of the single most important additions to modern Java</li><li>Master Java lambdas, and fully understand functions, classes, and scope.</li><li>Improve your programming skills, which will enable you to write cleaner and more dynamic code</li></ul><h2>Who This Book Is For</h2>
Learning Java Lambdas is for developers looking to upgrade their Java skills and familiarize themselves with one of the most important new features of Java. This book is not for absolute beginners and will be more suited to professionals who are already comfortable with Java coding. You should have a basic knowledge of Java before reading this book.
<h2>What You Will Learn</h2><ul><li>What a lambda is and how it differs from other Java features</li><li>How to use lambdas effectively in your own projects</li><li>The use of method references and advanced scoping</li><li>The difference between lambdas and closures</li><li>The differences in bytecode produced when using lambdas</li></ul><h2>In Detail</h2>
In this short book, we take an in-depth look at lambdas in Java, and their supporting features. The book covers essential topics, such as functional interfaces and type inference, and the key differences between lambdas and closures. You will learn about the background to functional programming and lambdas, before moving on to understanding the basic syntax of lambdas and what differentiates these anonymous functions from standard anonymous classes. Lastly, you'll learn how to invoke lambdas and look at the bytecode generated.

After reading this book, you'll understand lambdas in depth, their background, syntax, implementation details, and how and when to use them. You'll also have a clear knowledge of the difference between functions and classes, and why that's relevant to lambdas. This knowledge will enable you to appreciate the improvements to type inference that drive a lot of the new features in modern Java, and will increase your understanding of method references and scoping.
<h2>Style and approach</h2>
This book is a deep dive into one of the core new features of the Java language &#x2013; Lambdas. It covers them in great details, making sure that you fully understand how lambdas work, and how they can be put to use in your own programs.







Learning Java Lambdas Toby Weston
Learning Java Lambdas book docs





Start Your Free Trial Now Skills covered in this course Development Tools Developer Programming Languages Java Continue Assessment You started this assessment previously and didn't complete itLambda expressions can be used as method arguments or to iterate, filter, and extract data from a collectionTable of Contents Chapter 1: Introduction The road to modern Java Chapter 2: Lambdas Introduction s in functional programming Functions vs classes basic syntax Chapter 3: Lambdas in Depth Functional interfaces Type inference improvements Method references Scoping Exception handling Lambdas vs closures Bytecode recap Descriptors Converting a method signature Code examples Example 1 Example 2 Example 3 Example 4 Example 4 (with method reference) Example 5 Summary What You Will Learn What a lambda is and how it differs from other Java features How to use lambdas effectively in your own projects The use of method references and advanced scoping The difference between lambdas and closures The differences in bytecode produced when using lambdas Authors Toby Weston Toby Weston specializes in modern software development; particularly, functional and object-oriented programming, agile and lean best practiceYou should have a basic knowledge of Java before reading this book.What You Will LearnWhat a lambda is and how it differs from other Java featuresHow to use lambdas effectively in your own projectsThe use of method references and advanced scopingThe difference between lambdas and closuresThe differences in bytecode produced when using lambdasIn DetailIn this short book, we take an in-depth look at lambdas in Java, and their supporting featuresLastly, you'll learn how to invoke lambdas and look at the bytecode generated.Lambda Expressions in GUI Applications To process events in a graphical user interface (GUI) application, such as keyboard actions, mouse actions, and scroll actions, you typically create event handlers, which usually involves implementing a particular interfaceYou should have a basic knowledge of Java before reading this bookCollections are used to store, retrieve, manipulate, and communicate aggregate data

Lambdas in Depth Functional interfaces FunctionalInterface Extension Other interface improvements Summary Type inference improvements Java type inference Target-typing for lambdas Type parameters in method calls Type parameters in chained method calls Method references Example Method reference types Constructor reference Static method reference Instance method reference of particular object (in this case, a closure) Instance method reference of a arbitrary object whose instance is supplied later (lambda) Summary Scoping Effectively final Circumventing final Exception handling Using a callback Dealing with exceptions when writing lambdas As a caller (dealing with exceptions when calling lambdas) Lambdas vs closures Basic differences Other differences Summary Bytecode recap Descriptors Converting a method signature Code examples Example 1 Example 2 Example 3 Example 4 Example 4 (with method reference) Example 5 Summary 4,000+ eBooks & Videos 40+ New titles a month 1 Free eBook/Video to keep every month Start Free Trial args) { Calculator myApp = new Calculator(); IntegerMath addition = (a, b) -> a + b; IntegerMath subtraction = (a, b) -> a - b; System.out.println("40 + 2 = " + myApp.operateBinary(40, 2, addition)); System.out.println("20 - 10 = " + myApp.operateBinary(20, 10, subtraction)); } } The method operateBinary performs a mathematical operation on two integer operandsThe following table describes this use case in detail: Field Description Name Perform action on selected members Primary Actor Administrator Preconditions Administrator is logged in to the systemStyle and approach This book is a deep dive into one of the core new features of the Java language &ndash; LambdasDeclarations in a lambda expression are interpreted just as they are in the enclosing environmentThis knowledge will enable you to appreciate the improvements to type inference that drive a lot of the new features in modern Java, and will increase your understanding of method references and scoping

} } Suppose that the members of your social networking application are stored in a List instanceIn this example, the Consumer object is a lambda expression that prints a string, which is the e-mail address returned by the Function objectThe lambda expressions provide a clear and concise way to represent one method interface using an expressionSerialization You can serialize a lambda expression if its target type and its captured arguments are serializableIntroduction The road to modern Java Modern Java features This book is not for absolute beginners and will be more suited to professionals who are already comfortable with Java coding

The Consumer interface contains the method void accept(T t), which has these characteristicsTable of Contents Chapter 1Lambdas Introduction Chapter 3You would have to rewrite a lot of your API to accommodate this changeAfter reading this book, you'll understand lambdas in depth, their background, syntax, implementation details, and how and when to use themNote: You can omit the data type of the parameters in a lambda expressionFilters objects that match the Predicate object testerMark all as unwatched Cancel Take notes with your new membership! Type in the entry box, then click Enter to save your note 07f867cfac


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