Recipes for emerging developers in R programming and data scientists to simplify their R programming capabilities About This Book ? Develop strategies to speed up your R code ? Tackle programming problems and explore both functional and object-oriented programming techniques ? Learn how to address the core problems of programming in R with the most popular R packages for common tasks Who This Book Is For This book is for developers who would like to enhance the R programming skills. Basic knowledge of R programming is assumed. What You Will Learn ? Install R and its various IDE for a given platform along with installing libraries from different repositories and version control ? Learn about basic data structures in R and how to work with them ? Write customized R functions and handle recursions, exceptions in R environments ? Create the data processing task as a step by step computer program and execute using dplyr ? Extract and process unstructured text data ? Interact with database management system to develop statistical applications ? Formulate and implement parallel processing in R In Detail R is a powerful tool for statistics, graphics, and statistical programming. It is used by tens of thousands of people daily to perform serious statistical analyses. It is a free, open source system whose implementation is the collective accomplishment of many intelligent, hard-working people. There are more than 2,000 available add-ons, and R is a serious rival to all commercial statistical packages. The objective of this book is to show how to work with different programming aspects of R. The emerging R developers and data science could have very good programming knowledge but might have limited understanding about R syntax and semantics. Our book will be a platform develop practical solution out of real world problem in scalable fashion and with very good understanding. You will work with various versions of R libraries that are essential for scalable data science solutions. You will learn to work with Input / Output issues when working with relatively larger dataset. At the end of this book readers will also learn how to work with databases from within R and also what and how meta programming helps in developing applications. Style and approach This book will be a companion for R programmer and emerging developers in R programming areas. This book will contain recipes related to advanced R programming which will enable users to solve complex problems efficiently.

Run blazingly fast queries on complex graph datasets with the power of the Neo4j graph database About This Book ? Get acquainted with graph database systems and apply them in real-world use cases ? Use Cypher query language, APOC and other Neo4j extensions to derive meaningful analysis from complex data sets. ? A practical guide filled with ready to use examples on querying, graph processing and visualizing information to build smarter spatial applications. Who This Book Is For This book is for developers who want an alternative way to store and process data within their applications. No previous graph database experience is required; however, some basic database knowledge will help you understand the concepts more easily. What You Will Learn ? Understand the science of graph theory, databases and its advantages over traditional databases. ? Install Neo4j, model data and learn the most common practices of traversing data ? Learn the Cypher query language and tailor-made procedures to analyze and derive meaningful representations of data ? Improve graph techniques with the help of precise procedures in the APOC library ? Use Neo4j advanced extensions and plugins for performance optimization. ? Understand how Neo4j's new security features and clustering architecture are used for large scale deployments. In Detail Neo4j is a graph database that allows traversing huge amounts of data with ease. This book aims at quickly getting you started with the popular graph database Neo4j. Starting with a brief introduction to graph theory, this book will show you the advantages of using graph databases along with data modeling techniques for graph databases. You'll gain practical hands-on experience with commonly used and lesser known features for updating graph store with Neo4j's Cypher query language. Furthermore, you'll also learn to create awesome procedures using APOC and extend Neo4j's functionality, enabling integration, algorithmic analysis, and other advanced spatial operation capabilities on data. Through the course of the book you will come across implementation examples on the latest updates in Neo4j, such as in-graph indexes, scaling, performance improvements, visualization, data refactoring techniques, security enhancements, and much more. By the end of the book, you'll have gained the skills to design and implement modern spatial applications, from graphing data to unraveling business capabilities with the help of real-world use cases. Style and approach A step-by-step approach of adopting Neo4j, the world's leading graph database. This book includes a lot of background information, helps you grasp the fundamental concepts behind this radical new way of dealing with connected data, and will give you lots of examples of use cases and environments where a graph database would be a great fit

Enhance the performance of your applications by using React and adding the Progressive web app capability to it About This Book ? Bring the best of mobile sites and native apps to your users with progressive web applications ? Create fast, reliable, and engaging PWAs with React and Firebase ? Create high-performance applications even with low connection speeds by leveraging modern web technologies Who This Book Is For This book is for Java* Developers who want to develop high performance Web User Interfaces. This book requires basic knowledge of HTML, CSS and JavaScript. What You Will Learn ? Set up Webpack configuration, as well as get the development server running ? Learn basic Firebase configuration and deployment ? Create routes, manage multiple components, and learn how to use React Router v4 to manage the flow of data ? Use React life cycle methods to load data ? Add a service worker to the app and learn how it works ? Use a service worker to send Push Notifications ? Configure Webpack to split up the JavaScript bundle and lazy load component files ? Learn how to use the web Cache API to use your app offline ? Audit PWAs with Google's Lighthouse tool In Detail For years, the speed and power of web apps has lagged behind native applications. Progressive Web Apps (PWAs) aim to solve this by bridging the gap between the web apps and native apps, delivering a host of exciting features. Simultaneously, React is fast becoming the go-to solution for building modern web UIs, combining ease of development with performance and capability. Using React alongside PWA technology will make it easy for you to build a fast, beautiful, and functional web app. After an introduction and brief overview of the goals of PWAs, the book moves on to setting up the application structure. From there, it covers the Webpack build process and the process of creating React components. You'll learn how to set up the backend database and authentication solution to communicate with Firebase and how to work with React Router. Next, you will create and configure your web app manifest, making your PWA installable on mobile devices. Then you'll get introduced to service workers and see how they work as we configure the app to send push notifications using Firebase Cloud Messaging. We'll also explore the App Shell pattern, a key concept in PWAs and look at its advantages regarding efficient performance. Finally, you'll learn how to add offline capabilities to the app with caching and confirm your progress by auditing your PWA with Lighthouse. Also, you'll discover helper libraries and shortcuts that will help you save time and understand the future of PWA development. Style and approach This is a step-by-step book, wherein, you will use the React framework to create a complete progressive web app.

Master the ArcGIS API for JavaScript to build web and mobile applications using this practical guide. About This Book ? Develop ArcGIS Server applications with JavaScript, both for traditional web browsers as well as the mobile platform ? Make your maps informative with intuitive geographic layers, user interface widgets, and more ? Integrate ArcGIS content into your custom applications and perform analytics with the ArcGIS Online Who This Book Is For If you are a web or mobile application developer, who wants to create GIS applications in your respective platform, this book is ideal for you. You will need Java Script programming experience to get the most out of this book. Although designed as an introductory to intermediate level book, it will also be useful for more advanced developers who are new to the topic of developing applications with ArcGIS Server. What You Will Learn ? To create an application with the ArcGIS API for JavaScript ? Build and display a broad range of different geometry types to represent features on the map ? The best way to leverage a feature layer and display related attribute data ? The functionality of the wide range of widgets and how to use them effectively ? Query data to gain new insights into the information it contains ? Work with tasks to discover and locate features on the map ? Using the geocoder and associated widgets ? The ability of the API to provide turn by turn directions and routing capabilities ? How to use the Geometry Engine and Geometry Service tasks for common geoprocessing operations ? Integrate content on ArcGIS online and add it to your custom web mapping application In Detail The ArcGIS API for JavaScript enables you to quickly build web and mobile mapping applications that include sophisticated GIS capabilities, yet are easy and intuitive for the user. Aimed at both new and experienced web developers, this practical guide gives you everything you need to get started with the API. After a brief introduction to HTML/CSS/JavaScript, you'll embed maps in a web page, add the tiled, dynamic, and streaming data layers that your users will interact with, and mark up the map with graphics. You will learn how to quickly incorporate a broad range of useful user interface elements and GIS functionality to your application with minimal effort using prebuilt widgets. As the book progresses, you will discover and use the task framework to query layers with spatial and attribute criteria, search for and identify features on the map, geocode addresses, perform network analysis and routing, and add custom geoprocessing operations. Along the way, we cover exciting new features such as the client-side geometry engine, learn how to integrate content from ArcGIS.com, and use your new skills to build mobile web mapping applications. We conclude with a look at version 4 of the ArcGIS API for JavaScript (which is being developed in parallel with version 3.x) and what it means for you as a developer. Style and approach Readers will be taken through a series of exercises that will demonstrate how to efficiently build ArcGIS Server applications for the mobile and web.

Use test-driven approach to develop highly-functional iOS apps with Swift 4 and Xcode 9 About This Book ? A practical guide to writing effective, organized, and clean code that works well ? Learn test-driven principles to help you build better-designed apps with fewer bugs ? A comprehensive overview of the techniques available for TDD in Swift Who This Book Is For To get the most out of this book, you will need some prior experience with Swift application development. You may have already heard about Test-Driven Development (TDD) but you don't need any prior experience of applying it to Swift applications. What You Will Learn ? Implement TDD in Swift application development ? Find bugs before you enter code using the TDD approach ? Use TDD to build models, view controllers, and views ? Test network code with asynchronous tests and stubs ? Write code that is a joy to read and maintain ? Develop functional tests to ensure the app works as planned In Detail Test-driven development (TDD) is a proven way to find software bugs early. Writing tests before you code improves the structure and maintainability of your apps. Using TDD, in combination with Swift 4's improved syntax, means there is no longer any excuse for writing bad code. This book will help you understand the process of TDD and how to apply it to your apps written in Swift. Through practical, real-world examples, you’ll learn how to implement TDD in context. You will begin with an overview of the TDD workflow and then delve into unit-testing concepts and code cycles. You will also plan and structure your test-driven iOS app, and write tests to drive the development of view controllers and helper classes. Next, you’ll learn how to write tests for network code and explore how the test-driven approach—in combination with stubs—helps you write network code even before the backend component is finished. Finally, the book will guide you through the next steps to becoming a testing expert by discussing integration tests, Behavior Driven Development (BDD), open source testing frameworks, and UI Tests (introduced in Xcode 9). Style and approach Using a step-by-step approach, you will develop an entire iOS app using TDD. During the course of the book, you will explore different strategies for writing tests for models, View Controllers, and networking code.

Get a problem-solution approach enriched with code examples for practical and easy comprehension About This Book ? Explore the use of more than 40 best-of-breed plug-ins for improving efficiency ? Secure and maintain Jenkins 2.x by integrating it with LDAP and CAS, which is a Single Sign-on solution ? Efficiently build advanced pipelines with pipeline as code, thus increasing your team's productivity Who This Book Is For If you are a Java developer, a software architect, a technical project manager, a build manager, or a development or QA engineer, then this book is ideal for you. A basic understanding of the software development life cycle and Java development is needed, as well as a rudimentary understanding of Jenkins. What You Will Learn ? Install and Configure Jenkins 2.x on AWS and Azure ? Explore effective ways to manage and monitor Jenkins 2.x ? Secure Jenkins 2.x using Matrix-based Security ? Deploying a WAR file from Jenkins 2.x to Azure App Services and AWS Beanstalk ? Automate deployment of application on AWS and Azure PaaS ? Continuous Testing – Unit Test Execution, Functional Testing and Load Testing In Detail Jenkins 2.x is one of the most popular Continuous Integration servers in the market today. It was designed to maintain, secure, communicate, test, build, and improve the software development process. This book will begin by guiding you through steps for installing and configuring Jenkins 2.x on AWS and Azure. This is followed by steps that enable you to manage and monitor Jenkins 2.x. You will also explore the ways to enhance the overall security of Jenkins 2.x. You will then explore the steps involved in improving the code quality using SonarQube. Then, you will learn the ways to improve quality, followed by how to run performance and functional tests against a web application and web services. Finally, you will see what the available plugins are, concluding with best practices to improve quality. Style and approach This book provides a problem-solution approach to some common tasks and some uncommon tasks using Jenkins 2.x and is well-illustrated with practical code examples.

Switching to Angular, Third Edition is the go-to book to align and get started with the Angular JavaScript framework. Angular contributor and international speaker Minko Gechev will help you square up and start building Angular apps and provide you an insight to the Google’s vision for the framework. About This Book ? Get up to date with Google’s vision for Angular ? Align with Angular version 5 and beyond from any direction with confidence ? Start using TypeScript to supercharge your Angular applications ? Understand the new framework from AngularJS perspective using your prior experience ? Use Angular to quickly build fast and scalable enterprise applications Who This Book Is For This book is for software developers who want to align with a modern version of Angular that’s aligned with Google’s vision of Angular version 5 and beyond, using stable APIs that they can depend on today and in the future. Also for anyone assessing changes to Angular and squaring up for a strategic migration to Angular v5, and for AngularJS developers who want to transfer their mindset to modern Angular version 5 and beyond. What You Will Learn ? Align with Google’s vision for Angular version 5 and beyond ? Confidently move forwards with a long-term understanding of Angular ? Use stable APIs in Angular to build future-proof, blazingly fast, enterprise applications ? Work with TypeScript to supercharge your Angular applications ? Understand the core concepts of Angular, aligned with the vision from Google ? Be ready with Angular from any direction - whether you’re building new new apps with the Angular and ASP.NET stack or upgrading from AngularJS with ngUpgrade In Detail Align your work to stable APIs of Angular, version 5 and beyond, with Angular expert Minko Gechev. Angular is the modern Google framework for you to build high-performing, SEO-friendly, and robust web applications. Switching to Angular, Third Edition shows you how you can align your current and future development with Google’s long term vision for Angular. Gechev shares his expert knowledge and community involvement to give you the clarity you need to confidently switch into Angular and stable APIs. Minko Gechev helps you square up to Angular with an overview of the framework, and understand the long term building blocks of Google’s web framework. Gechev then gives you the lowdown on TypeScript, with a crash-course so you can take advantage of Angular in its native, statically-typed environment. You’ll next move on to see how you can line up with Angular dependency injection, plus how Angular router and forms, and Angular pipes, are designed to work for your projects today and in the future. You'll be squared up and aligned with the vision and techniques of the one Angular, and be ready to start building quick and efficient Angular applications. You’ll know how to take advantage of the latest Angular features, and the core, stable APIs that you can depend on. You’ll be ready to confidently plan your future with the Angular framework. Style and approach In this book, Minko Gechev continues his direct style of sharing knowledge about Angular that he's developed across more than 40 international presentations to Angular developers. First, Minko explains Google's vision of Angular to you, and then you dive into a clear tutorial to work with Angular that's aligned with Google's vision of Angular.

Partly autobiographical, this is the second title in Judith Kerr’s internationally acclaimed trilogy of books following the life of Anna through war-torn Germany, to London during the Blitz and her return to Berlin to discover the past… It is hard enough being a teenager in London during the Blitz, finding yourself in love and wondering every night whether you will survive the bombs. But it is even harder for Anna, who is still officially classified as an “enemy alien”. Those bombs are coming from Germany – the country that was once her own. If Hitler invades, can she and her beloved refugee family possibly survive? This was previously published as The Other Way Round.

The story of the 19th-century ice trade, in which ice from the lakes of New England – valued for its incredible purity – revolutionised domestic life around the world. In the days before artificial refrigeration, it was thought impossible to transport ice for long distances. But one man, Frederic Tudor, was convinced it could be done. This is the story of how, almost single-handedly, and in the face of near-universal mockery, he established a vast industry that would introduce the benefits of fresh ice to large parts of the globe. Thanks to Tudor, the American fashion for drinks ‘on the rocks’ spread to tropical areas such as the West Indies and British India. By the 1830s fleets of schooners carried the frozen cargo, packed with sawdust and tarpaulins for insulation, to all corners of the world. The harvesting of the ice from New England’s lakes employed thousands of men. The frozen water trade had a profound influence on the tastes of a large part of the world, but with the development of artificial cooling systems in the first quarter of the 20th century, the huge industry established by Frederic Tudor vanished as if it had never been. Note that it has not been possible to include the same picture content that appeared in the original print version.

How does one talk about love? We are all beginners when it comes to love, from those tentative first dates to learning how to live with, or without, someone. But how does one describe love? How does one chart its delights and pleasures, its depths and desolations? Do we even have the right words to describe something that can be both utterly mundane and completely transcendent, pulling us out of our everyday lives and making us feel a part of something greater than ourselves? David Levithan's The Lover's Dictionary starts where we all once started – with the alphabet. Constructing the story of a relationship as a dictionary, Levithan explores the intimacies and workings of love through his nameless narrator, to paint a moving portrait of love through everyday words. Cleverly using the confines of language to provide an intimate window into the great events and quotidian trifles of being part of a couple, Levithan gives us an indelible and deeply moving portrait of love in our time.

Guaradian award winning novel about courage, friendship and war. Reissued into the Essential Modern Classic list. When a bomb during an air raid destroys Harry's home and kills his family, he knows that he is all alone in the world and has only himself to rely on. Anxious that he will be sent to live with his fussy Cousin Elsie he goes on the run across the war-battered land of North East England, his only friend in his journey a stray dog that he meets on the beach. Will Harry ever find a place to call home again, or will he be on the run forever?

The continuation of a powerful new fantasy adventure filled with dark magic and deadly intrigue, from the worldwide bestselling author of the SAGA OF THE PLIOCENE EXILE. King Conrig Ironcrown now rules the entire island of High Blenholme. But the peace he achieved after ruthlessly uniting its four quarrelling kingdoms into a Sovereignty is about to be challenged by enemies both mortal and supernatural. Rumours abound that his vengeful first wife, Maudrayne, believed to have committed suicide when she discovered his infidelity, is in fact still alive and about to reveal a secret that could cost Conrig his throne. A more tangible threat is posed by the ambitious sorcerer Beynor, and his crony, Conrig's traitorous former alchymist Kilian, who have stolen a trove of currently inactive moonstones capable of drawing tremendous power from the mysterious supernatural Beaconfolk. After initiating a civil war, the pair hope to utilize this power to vanquish Conrig's fatally divided realm and rule it themselves. The King's unlikely champion is his royal intelligencer, Deveron, a young man secretly possessed of magical talents. But Deveron is torn between his loyalty to the iron-willed king and his own conscience. The resulting clash involves not only human beings, but also the ancient races who inhabited High Blenholme before them – and who now intend to take back their lost homeland.

Jimmy’s back in the electrifying sequel to Jimmy Coates: Killer. Stand back for this high-speed adventure, packed with surprises, danger and escape against the odds. “Jimmy's fingers were slipping. Smeared with blood, he had hardly any grip. He had to hold on. Mitchell chopped his hand down hard into Jimmy's shoulder, cutting off the nerves to his fingers. Staring up into Mitchell's ice-cold eyes, Jimmy fell into the shredder.” Jimmy Coates is still on the run – and this time NJ7 are pulling no punches. They’re out for blood, and even though Jimmy has gone into hiding in France, they still track him down. Jimmy might think that life could hold no further surprises for him – but he’s very, very wrong.

The inside story of the ‘reluctant medium’, finally available in a mass-market A-format edition Betty Shine was originally an opera singer, but studied all forms of alternative healing, becoming a vitamin and mineral therapist. Guided by spirit voices from the age of two, she became a world-famous medium. This is the story of how she became the best known medium and healer in the UK. Through her books, tapes and absent healing service, she is in touch with thousands of people worldwide. The hardback publication of her book produced a tremendous response from both the media and the general public and this A-format edition will bring her story to an even wider audience.

Nine-year-old Meena can’t wait to grow up and break free from her parents. But, as the daughter of the only Punjabi family in the mining village of Tollington, her struggle for independence is different from most. Meena wants fishfingers and chips, not chapati and dhal; she wants an English Christmas, not the usual interminable Punjabi festivities – but more than anything, she wants to roam the backyards of working-class Tollington with feisty Anita Rutter and her gang. Blonde, cool, aloof, outrageous and sassy, Anita is everything Meena thinks she wants to be. Meena wheedles her way into Anita’s life, but the arrival of a baby brother, teenage hormones, impending entrance exams for the posh grammar school and a motorcycling rebel without a future threaten to turn Anita’s salad days sour. Anita and Me paints a comic, poignant, compassionate and colourful portrait of village life in the era of flares, power cuts, glam rock, decimalisation and Ted Heath. It is a unique vision of a British childhood in the Seventies, a childhood caught between two cultures, each on the brink of change.

From Doris Lessing, winner of the Nobel Prize for Literature, the sequel to one of her most celebrated novels, ‘The Fifth Child’. ‘The Fifth Child’, Doris Lessing’s 1988 novel, made a powerful impact on publication. Its account of idyllic marital and parental bliss shattered by the arrival of the feral fifth child of the Lovatts made for unnerving and compulsive reading. That child, Ben, is the central character of this sequel, which picks up the fable at the end of his childhood and takes our primal, misunderstood, maladjusted teenager out into the world. He meets mostly with mockery, fear and incomprehension, but with just enough kindness and openness to keep him afloat as his adventures take him from London to the south of France and on to South America in his restless quest for community, companionship and peace. Lessing employs a plain, unadorned prose fit for fables; again, we have a childlike perspective at the heart of the book; again, the world in all its malevolence and misapprehension swirls around at the edge, while, occasionally, a strong character steps forward to try to set a good example.

The inside story of the one of the most successful British stand-up comedians, as told by the person best qualified to reveal all about the man behind the comic, his wife of over 20 years – Pamela Stephenson. Once in a lifetime, there strides upon the stage someone who can truly be called a legend. Such a person is the inimitable, timeless genius who is Billy Connolly. His effortlessly wicked whimsy has entranced, enthralled – and split the sides of – thousands upon thousands of adoring audiences. And when he isn't doing that…he's turning in award-winning performances on film and television. He's the man who needs no introduction, and yet he is the ultimate enigma. From a troubled and desperately poor childhood in the docklands of Glasgow he is now the intimate of household names the world over. How did this happen, who is the real Billy Connolly? Only one person can answer that question: his wife, Pamela Stephenson. Pamela’s writing combines the very personal with a frank objectivity that makes for a compelling, moving and hugely entertaining biography. This is the real Billy Connolly. This genre-defining book is now released as an ebook for a new generation of comedy fans, with a new Foreword from the author. Pamela’s vision of Billy is as true now as it ever was – as groundbreaking, as moving and as laugh-out-loud funny – and here she brings the book fully into its context, as one of the most influential biographies ever written.

The ultimate biography of this ever-popular star and icon, from a young Cambridge don who has already made his name with a much praised biography of Marilyn Monroe. Cary Grant made men seem like a good idea. Tall, dark and handsome with a rare gift for light comedy, he played a leading man who liked to be led, a man of the world who was a man of the people. Cary Grant was Hollywood’s quintessential democratic gentleman. Born in England as Archie Leach, made famous in America as Cary Grant, he was a star for more than 30 years, in more than 70 movies, his popularity still intact when he brought his career to a close. He was never replaced: nobody else talked like that, looked like that, behaved like that. He was a class apart. Cary Grant never explained how he came to play ‘Cary Grant’ so well. ‘Nobody is every truthful about his own life,’ he said. ‘There are always ambiguities.’ This book explores the ambiguities in the life and work of Cary Grant: a working class Englishman who portrayed a well-bred American; the playful entertainer who became a powerful businessman; the intimate stranger who was often the seduced male. Thorough and meticulously researched, this book is a dazzling and entertaining account of Cary Grant’s broad and enduring appeal.

‘Snort up “Cocaine Nights”. It’s disorientating, deranging and knocks the work of other avant-garde writers into a hatted cock’ Will Self Five people die in an unexplained house fire in the Spanish resort of Estrella de Mar, an exclusive enclave for the rich, retired British, centred on the thriving Club Nautico. The club manager, Frank Prentice, pleads guilty to charges of murder – yet not even the police believe him. When his Charles arrives to unravel the truth, he gradually discovers that behind the resort’s civilized fa?ade flourishes a secret world of crime, drugs and illicit sex. At once an engrossing mystery and a novel of ideas, ‘Cocaine Nights’ is a stunningly original work, a vision of a society coming to terms with a life of almost unlimited leisure. This edition is part of a new commemorative series of Ballard’s works, featuring introductions from a number of his admirers (including Neil Gaiman, Zadie Smith, John Lanchester and Martin Amis) and brand-new cover designs.

This acclaimed biography charts the progress of the brilliant, prolific writer, C. S. Lewis. C. S. Lewis was a deeply complex man, capable of inspiring both great devotion and great hostility. This acclaimed biography charts the progress of the clever child from the ‘Little End Room’ of his Ulster childhood and adult life, exploring Lewis’s unwilling conversion to Christianity, the genesis of his writing, and the web of his relationships.

Aliens are coming… to get up your nose! A long time ago, on a planet really, really far away, a bunch of slimy aliens discovered the secret to clean, renewable energy – snot! That was when the Galactic Union of Nasty Killer Aliens (G.U.N.K.) was born. Its mission: to find human life and drain its snot. Rockets were sent to the four corners of the known universe, each carrying representatives from the major alien races. Three of them were never heard from again. But one of them landed on a planet quite simply full of humans. This one. Now all that stands between earth and alien invasion is a hero named Jack. Problem is, he’s not even out of primary school yet…