This platform enables you to run decentralized applications (DApps) and smart contracts that have no central points of failure or control, integrate with a payment network, and operate on an open blockchain. With this practical guide, Andreas M. Antonopoulos and Gavin Wood provide everything you need to know about building smart contracts and DApps on Ethereum and other virtual-machine blockchains.Discover why IBM, Microsoft, NASDAQ, and hundreds of other organizations are experimenting with Ethereum. This essential guide shows you how to develop the skills necessary to be an innovator in this growing and exciting new industry.Run an Ethereum client, create and transmit basic transactions, and program smart contractsLearn the essentials of public key cryptography, hashes, and digital signaturesUnderstand how wallets hold digital keys that control funds and smart contractsInteract with Ethereum clients programmatically using JavaScript libraries and Remote Procedure Call interfacesLearn security best practices, design patterns, and anti-patterns with real-world examplesCreate tokens that represent assets, shares, votes, or access control rightsBuild decentralized applications using multiple peer-to-peer (P2P) components

    From Stephen Levy—the author who made "hackers" a household word—comes this account of a revolution that is already affecting every citizen in the twenty-first century. Crypto tells the inside story of how a group of "crypto rebels"—nerds and visionaries turned freedom fighters—teamed up with corporate interests to beat Big Brother and ensure our privacy on the Internet. Levy's history of one of the most controversial and important topics of the digital age reads like the best futuristic fiction.

    This book takes you beyond the currency ("Blockchain 1.0") and smart contracts ("Blockchain 2.0") to demonstrate how the blockchain is in position to become the fifth disruptive computing paradigm after mainframes, PCs, the Internet, and mobile/social networking. Author Melanie Swan, Founder of the Institute for Blockchain Studies, explains that the blockchain is essentially a public ledger with potential as a worldwide, decentralized record for the registration, inventory, and transfer of all assets—not just finances, but property and intangible assets such as votes, software, health data, and ideas. Topics include: Concepts, features, and functionality of Bitcoin and the blockchain Using the blockchain for automated tracking of all digital endeavors Enabling censorship?resistant organizational models Creating a decentralized digital repository to verify identity Possibility of cheaper, more efficient services traditionally provided by nations Blockchain for science: making better use of the data-mining network Personal health record storage, including access to one’s own genomic data Open access academic publishing on the blockchain This book is part of an ongoing O’Reilly series. Mastering Bitcoin: Unlocking Digital Crypto-Currencies introduces Bitcoin and describes the technology behind Bitcoin and the blockchain. Blockchain: Blueprint for a New Economy considers theoretical, philosophical, and societal impact of cryptocurrencies and blockchain technologies.

    Arpita Basu, the only daughter-in-law of Basu family, is here to tell you a story that will leave your stomach hurting with chuckles and laughter. A Chudail to her prim mother-in-law, inexistent to the devil father-in-law, a damped down bomb to her once best friend Naveena and well, nothing whatsoever to her own husband Akash, the 23-year-old finds herself questioning the very concept of familism as her six months of tumultuous married life is hit with unanswerable questions sprouting every now and then in her head.Speaking of head, what do you think is its importance in Mrs. Basu's life? Oh boy, you're in for a surprise! Because the quirks of their tongue-in-cheek relationship is bound to make you split your sides.However, in a split second Mrs. Basu's life goes kaput as her dark past comes knocking at the door. While she struggles to keep it at bay, her husband leaves her side with no promise of coming back ever.Is it mere coincidence that her past holds a connection to the disappearance of her husband? Or, is it what Mrs. Basu deserves for all she did in the past?This chapter of her life will unravel the mysteries of the present, all the knots of the past and the road to the future. Of course, in the most hilarious way possible.

    Somewhere in the darkness, a man is burning to death. Then the screams suddenly stop. Did he jump out of a window? Or did he succumb to the heat and smoke? Those screams haunt Firefighter Robert Marchisello to this day. It’s just one of the many revealing stories about battling blazes and numerous other dangers in America’s fifth-largest city—home of the nation’s first fire company—in this autobiography of his thirty-seven-year career with the Philadelphia Fire Department. During his entire career Marchisello kept a journal detailing his experiences as well as his personal and professional challenges. His work offers rare insights into the unimaginable types of emergencies to which these men and women respond—from decomposing bodies to hazardous chemicals to deadly shootouts. Between calls sit in the firehouse and enjoy the pranks, banter, humor, and camaraderie firefighters share. His vibrant writing lets you experience the adrenalin, the danger and yes, even the laughs of nearly four decades on the firegrounds, in the firehouses and everywhere in between. You’ll never look at a passing fire engine the same way!

    And then there are the riders: men of almost superhuman capabilities, men who have become his friends, men whose stories he has written day in day out for the past decade. But even the biggest fan can one day wake up to find that he has lost his faith. Bad Blood is the story of Jeremy Whittle's journey from unquestioning fan to Tour de France insider and confirmed sceptic. It's about broken friendships and a sport divided; about having to choose sides in the war against doping; about how galloping greed and corporate opportunism have led the Tour de France to the brink of destruction. Part personal memoir, part devastating exposé of a sport torn apart by drugs and scandal, Bad Blood is a love letter to one man's past, and a warning to cycling's future.

     Leading-edge companies like Amazon and Google are applying DevOps and Agile principles to deliver large software projects faster than anyone thought possible. But most executives don’t understand how to transform their current legacy systems and processes to scale these principles across their organizations. Leading the Transformation is an executive guide, providing a clear framework for improving development and delivery. Instead of the traditional Agile and DevOps approaches that focus on improving the effectiveness of teams, this book targets the coordination of work across teams in large organizations—an improvement that executives are uniquely positioned to lead.

    If you're a business or IT professional, this short hands-on guide teaches you how to pull and transform data with SQL in significant ways. You will quickly master the fundamentals of SQL and learn how to create your own databases.Author Thomas Nield provides exercises throughout the book to help you practice your newfound SQL skills at home, without having to use a database server environment. Not only will you learn how to use key SQL statements to find and manipulate your data, but you'll also discover how to efficiently design and manage databases to meet your needs.You'll also learn how to:Explore relational databases, including lightweight and centralized modelsUse SQLite and SQLiteStudio to create lightweight databases in minutesQuery and transform data in meaningful ways by using SELECT, WHERE, GROUP BY, and ORDER BYJoin tables to get a more complete view of your business dataBuild your own tables and centralized databases by using normalized design principlesManage data by learning how to INSERT, DELETE, and UPDATE records

    With Java 5.0, you'll not only find substantial changes in the platform, but to the language itself-something that developers of Java took five years to complete. The main goal of Java 5.0 is to make it easier for you to develop safe, powerful code, but none of these improvements makes Java any easier to learn, even if you've programmed with Java for years. And that means our bestselling hands-on tutorial takes on even greater significance."Learning Java" is the most widely sought introduction to the programming language that's changed the way we think about computing. Our updated third edition takes an objective, no-nonsense approach to the new features in Java 5.0, some of which are drastically different from the way things were done in any previous versions. The most essential change is the addition of "generics," a feature that allows developers to write, test, and deploy code once, and then reuse the code again and again for different data types. The beauty of generics is that more problems will be caught during development, and "Learning Java" will show you exactly how it's done.Java 5.0 also adds more than 1,000 new classes to the Java library. That means 1,000 new things you can do without having to program it in yourself. That's a huge change. With our book's practical examples, you'll come up to speed quickly on this and other new features such as loops and threads. The new edition also includes an introduction to Eclipse, the open source IDE that is growing in popularity. "Learning Java," 3rd Edition addresses all of the important uses of Java, such as web applications, servlets, and XML that are increasingly driving enterprise applications.

    "More concretely," the authors explain, "it is the controlled manipulation of mathematical formulas, using a collection of techniques for solving problems."

    This book is for the beginning to intermediate web developer who wants to solve web development problems with smart JavaScript. It does not assume any prior knowledge of JavaScript programming; however even if you already know some JavaScript, there will be plenty for you to learn here.

    Each story digs into one of the five period related problems: Pain | Staining | Sexual Inhibition | PMS | Taboo, through each one's journey. The title signifies the second day of a woman's period, which is said to be the toughest of the five days. The stories are a reflection of the less acknowledged society around us. Through menstrual problems as a window, the book is an attempt to bring light to the intriguing yet briefly understood aspects of womanhood in different age groups.

    a quick, easy reference to using your Kindle Paperwhite — to the max! Amazon’s Paperwhite is the handiest, best value e-reader, and is your portal to an infinite universe of education and entertainment — and this handy book helps you get the maximum bang for your Kindle bucks. You’ll see how to quickly set up your Paperwhite, navigate the touch-screen and buy, borrow, and browse the world’s largest library of digital books. This reference guide from Amazon guru Steve Weber demystifies the Paperwhite and explains in plain English how to master the Kindle basics, and covers much more, including secret tips, tricks and shortcuts you won’t find elsewhere. Each section includes clearly written step-by-step instructions, illustrated with screenshots and menus just like you’ll see on your own Kindle’s screen. You’ll see how to: > Change your Paperwhite’s setting just the way you want. > Charge your Kindle’s battery properly and prolong its life. > Enjoy an infinite supply of the best books. > Use personal and office documents, including PDFs. Chuck your laptop, and do all your reading on the Kindle! > The easy way to harvest your own content and get it onto your Paperwhite, including gems you didn’t buy at Amazon. > How to download, organize and read your favorite books, magazines and newspapers on the Kindle Fire. > How to get current and archived editions of the world’s most popular newspapers, magazines and websites streamed to your Kindle—updated constantly, with no fees whatsoever! > Use Amazon’s free “Cloud” service for unlimited storage of your digital content. > Find the best free content in the world, downloadable to your Kindle. (You might never have to pay for books, movies or music again—ever!) About the author: Steve Weber has been writing about Amazon for nearly a decade. He is the founding publisher of KindleBuffet.com, a daily website featuring outstanding Kindle books offered free that day.

    This book is an insider's guide to these little understood topics.Author Jeremy Zawodny has managed large numbers of MySQL servers for mission-critical work at Yahoo!, maintained years of contacts with the MySQL AB team, and presents regularly at conferences. Jeremy and Derek have spent months experimenting, interviewing major users of MySQL, talking to MySQL AB, benchmarking, and writing some of their own tools in order to produce the information in this book.In "High Performance MySQL" you will learn about MySQL indexing and optimization in depth so you can make better use of these key features. You will learn practical replication, backup, and load-balancing strategies with information that goes beyond available tools to discuss their effects in real-life environments. And you'll learn the supporting techniques you need to carry out these tasks, including advanced configuration, benchmarking, and investigating logs.Topics include: A review of configuration and setup optionsStorage engines and table typesBenchmarkingIndexesQuery OptimizationApplication DesignServer PerformanceReplicationLoad-balancingBackup and RecoverySecurity

    It's a beautifully written tutorial that begins with the basic steps to get your first Ruby program up and running and goes on to explore sophisticated topics like callable objects, reflection, and threading. Whether the topic is simple or tough, the book's easy-to-follow examples and explanations will give you immediate confidence as you build your Ruby programming skills.The Well-Grounded Rubyist is a thoroughly revised and updated edition of the best-selling Ruby for Rails. In this new book, expert author David A. Black moves beyond Rails and presents a broader view of Ruby. It covers Ruby 1.9, and keeps the same sharp focus and clear writing that made Ruby for Rails stand out.Starting with the basics, The Well-Grounded Rubyist explains Ruby objects and their interactions from the ground up. In the middle chapters, the book turns to an examination of Ruby's built-in, core classes, showing the reader how to manipulate strings, numbers, arrays, ranges, hashes, sets, and more. Regular expressions get attention, as do file and other I/O operations.Along the way, the reader is introduced to numerous tools included in the standard Ruby distribution--tools like the task manager Rake and the interactive Ruby console-based interpreter Irb--that facilitate Ruby development and make it an integrated and pleasant experience.The book encompasses advanced topics, like the design of Ruby's class and module system, and the use of Ruby threads, taking even the new Rubyist deep into the language and giving every reader the foundations necessary to use, explore, and enjoy this unusually popular and versatile language.It's no wonder one reader commented: "The technical depth is just right to not distract beginners, yet detailed enough for more advanced readers."Purchase of the print book comes with an offer of a free PDF, ePub, and Kindle eBook from Manning. Also available is all code from the book.