This jargon-free guide covers JavaScript basics and shows you how to save time and effort with the jQuery library of prewritten JavaScript code. You’ll soon be building web pages that feel and act like desktop programs, without having to do much programming.The important stuff you need to know:Make your pages interactive. Create JavaScript events that react to visitor actions.Use animations and effects. Build drop-down navigation menus, pop-ups, automated slideshows, and more.Improve your user interface. Learn how the pros make websites fun and easy to use.Collect data with web forms. Create easy-to-use forms that ensure more accurate visitor responses.Add a dash of Ajax. Enable your web pages to communicate with a web server without a page reload.Practice with living examples. Get step-by-step tutorials for web projects you can build yourself.

    You'll also learn how to make your programs interactive and how to test your code safely before adding it to a project. In the second half of the book, you'll put your new knowledge into practice with three substantial projects: a Space Invaders-inspired arcade game, data visualizations with Python's super-handy libraries, and a simple web app you can deploy online.As you work through Python Crash Course, you'll learn how to: Use powerful Python libraries and tools, including matplotlib, NumPy, and PygalMake 2D games that respond to keypresses and mouse clicks, and that grow more difficult as the game progressesWork with data to generate interactive visualizationsCreate and customize simple web apps and deploy them safely onlineDeal with mistakes and errors so you can solve your own programming problemsIf you've been thinking seriously about digging into programming, Python Crash Course will get you up to speed and have you writing real programs fast. Why wait any longer? Start your engines and code!

    The problem is that all of those lines of JavaScript code can slow down your apps. This book reveals techniques and strategies to help you eliminate performance bottlenecks during development. You'll learn how to improve execution time, downloading, interaction with the DOM, page life cycle, and more. Yahoo! frontend engineer Nicholas C. Zakas and five other JavaScript experts -- Ross Harmes, Julien Lecomte, Steven Levithan, Stoyan Stefanov, and Matt Sweeney -- demonstrate optimal ways to load code onto a page, and offer programming tips to help your JavaScript run as efficiently and quickly as possible. You'll learn the best practices to build and deploy your files to a production environment, and tools that can help you find problems once your site goes live. Identify problem code and use faster alternatives to accomplish the same task Improve scripts by learning how JavaScript stores and accesses data Implement JavaScript code so that it doesn't slow down interaction with the DOM Use optimization techniques to improve runtime performance Learn ways to ensure the UI is responsive at all times Achieve faster client-server communication Use a build system to minify files, and HTTP compression to deliver them to the browser

    You'll find the latest methodologies for the design of effective test cases, including information on psychological and economic principles, managerial aspects, test tools, high-order testing, code inspections, and debugging. Accessible, comprehensive, and always practical, this edition provides the key information you need to test successfully, whether a novice or a working programmer. Buy your copy today and end up with fewer bugs tomorrow.

    Generics and the greatly expanded collection libraries have tremendously increased the power of Java 5 and Java 6. But they have also confused many developers who haven't known how to take advantage of these new features.Java Generics and Collections covers everything from the most basic uses of generics to the strangest corner cases. It teaches you everything you need to know about the collections libraries, so you'll always know which collection is appropriate for any given task, and how to use it.Topics covered include:• Fundamentals of generics: type parameters and generic methods• Other new features: boxing and unboxing, foreach loops, varargs• Subtyping and wildcards• Evolution not revolution: generic libraries with legacy clients and generic clients with legacy libraries• Generics and reflection• Design patterns for generics• Sets, Queues, Lists, Maps, and their implementations• Concurrent programming and thread safety with collections• Performance implications of different collectionsGenerics and the new collection libraries they inspired take Java to a new level. If you want to take your software development practice to a new level, this book is essential reading.Philip Wadler is Professor of Theoretical Computer Science at the University of Edinburgh, where his research focuses on the design of programming languages. He is a co-designer of GJ, work that became the basis for generics in Sun's Java 5.0.Maurice Naftalin is Technical Director at Morningside Light Ltd., a software consultancy in the United Kingdom. He has most recently served as an architect and mentor at NSB Retail Systems plc, and as the leader of the client development team of a major UK government social service system."A brilliant exposition of generics. By far the best book on the topic, it provides a crystal clear tutorial that starts with the basics and ends leaving the reader with a deep understanding of both the use and design of generics." Gilad Bracha, Java Generics Lead, Sun Microsystems

    Adam worries how his shy wife, Mercy, will cope with having to share the only room left. Bored at having to ride out the storm with only two channels on TV, Nelson suggests an innocent game of truth or dare. As Mercy sheds her usual bashful demeanor, the situation turns explosive. How low will Adam let his wife descend?

    She's the Chief of Staff at a retirement home, which doesn't sound odd on its own, but when you consider it's a retirement home for witches and other paranormals, the strange factor ratchets up.  And, with a facility full of partly senile but still powerful witches, things go hilariously awry fast. This e-book contains the first three books in the Sunnyside Retired Witches Community series. Book 1: A Bottle Full of Djinn: Zoey Rivers has a pretty great job as Head of Staff at Sunnyside Retired Witches Community. She's good at handling the magical messes that are part and parcel of providing a home for elderly (and some slightly senile) witches. But when the messes turn from slightly sloppy to hugely horrible, Zoey realizes there's more involved than just her residents. If she doesn't figure out who's causing havoc at the Home, the place might not be standing for much longer. If you love crime capers with magic, mayhem, and mystery, you'll adore Zoey Rivers and her comical crew of witch retirees. Please note: This book is a crime caper, not a murder mystery. Book 2: Loony Town: Caring for elderly witches at the retirement home in Sunnyside, California is a full-time job for Zoey Rivers. But when one of them is blitzing, causing magic to act even weirder than normal, things get…well, downright wacky. And when a local insurance agent winds up dead, some of the people Zoey is responsible for become the prime suspects. As the zaniness of the magical blips continues and things get crazier and crazier, Zoey has to work fast and try to stay one step ahead to keep her charges out of jail, figure out who is causing the chaotic blitzing so she can fix it, and also figure out who the real killer is. It’s a tough job, but she's determined to do it. The people who live at Sunnyside Retired Witches Community are counting on her. And she’s not about to let them down now. Book 3: Mummy Issues: Sunnyside Retirement Witches Community gets its fair share of visitors. Some of them like the entertainment and others enjoy volunteering. But when one of the sight-seers ends up dead, Zoey Rivers has to figure out what happened. The residents come up with a fantastic idea: Since the retirement complex seems to have more than its fair share of murders, they figure it might be a good idea to have a psychic on staff. So, Zoey hires Iris. And all the information she pulls from the ghosts of the growing list of victims points to Zoey herself. Except the clues aren't pointing to her. They're fingering someone she'd thought was long dead.Sunnyside Retirement Witches Community gets its fair share of visitors. Some of them like the entertainment and others enjoy volunteering. But when one of the sight-seers ends up dead, Zoey Rivers has to figure out what happened. The residents come up with a fantastic idea: Since the retirement complex seems to have more than its fair share of murders, they figure it might be a good idea to have a psychic on staff. So, Zoey hires Iris. And all the information she pulls from the ghosts of the growing list of victims points to Zoey herself. Except the clues aren't pointing to her. They're fingering someone she'd thought was long dead.

    Try out more than 1,000 commands to find and get software, monitor system health and security, and access network resources. Then, apply the skills you learn from this book to use and administer desktops and servers running Ubuntu, Debian, and KNOPPIX or any other Linux distribution.

    The pytest testing framework helps you write tests quickly and keep them readable and maintainable - with no boilerplate code. Using a robust yet simple fixture model, it's just as easy to write small tests with pytest as it is to scale up to complex functional testing for applications, packages, and libraries. This book shows you how.For Python-based projects, pytest is the undeniable choice to test your code if you're looking for a full-featured, API-independent, flexible, and extensible testing framework. With a full-bodied fixture model that is unmatched in any other tool, the pytest framework gives you powerful features such as assert rewriting and plug-in capability - with no boilerplate code.With simple step-by-step instructions and sample code, this book gets you up to speed quickly on this easy-to-learn and robust tool. Write short, maintainable tests that elegantly express what you're testing. Add powerful testing features and still speed up test times by distributing tests across multiple processors and running tests in parallel. Use the built-in assert statements to reduce false test failures by separating setup and test failures. Test error conditions and corner cases with expected exception testing, and use one test to run many test cases with parameterized testing. Extend pytest with plugins, connect it to continuous integration systems, and use it in tandem with tox, mock, coverage, unittest, and doctest.Write simple, maintainable tests that elegantly express what you're testing and why.What You Need: The examples in this book are written using Python 3.6 and pytest 3.0. However, pytest 3.0 supports Python 2.6, 2.7, and Python 3.3-3.6.

    But, although they use these patterns purposefully, they often use them informally and nearly unconsciously. This book organizes this substantial emerging "folklore" of system design -- with its rich language of system description -- and closes the gap between the useful abstractions (constructs and patterns) of system design and the current models, notations and tools. It identifies useful patterns clearly, gives examples, compares them, and evaluates their utility in various settings -- allowing readers to develop a repertoire of useful techniques that goes beyond the single-minded current fads. KEY TOPICS: Examines the ways in which architectural issues can impact software design; shows how to design new systems in principled ways using well-understood architectural paradigms; emphasizes informal descriptions, touching lightly on formal notations and specifications, and the tools that support them; explains how to understand and evaluate the design of existing software systems from an architectural perspective; and presents concrete examples of actual system architectures that can serve as models for new designs. MARKET: For professional software developers looking for new ideas about system organization.

    This book is aimed at the working Rails developer who is looking to grow and evolve Rails projects while keeping them flexible, maintainable, and robust. The focus is on pragmatic solutions which tread a “middle way” between the expedience of the Rails “golden path”, and rigid OO purity.

    What should you and your company be doing today to ensure that you're poised for success and keeping up with your competitors in the age of AI?Artificial Intelligence: The Insights You Need from Harvard Business Review brings you today's most essential thinking on AI and explains how to launch the right initiatives at your company to capitalize on the opportunity of the machine intelligence revolution.Business is changing. Will you adapt or be left behind?Get up to speed and deepen your understanding of the topics that are shaping your company's future with the Insights You Need from Harvard Business Review series. Featuring HBR's smartest thinking on fast-moving issues--blockchain, cybersecurity, AI, and more--each book provides the foundational introduction and practical case studies your organization needs to compete today and collects the best research, interviews, and analysis to get it ready for tomorrow. You can't afford to ignore how these issues will transform the landscape of business and society. The Insights You Need series will help you grasp these critical ideas--and prepare you and your company for the future.

    Now featuring more than 250 color illustrations throughout, this perennially popular guide is a must for novices who want to work with HTML or XHTML, which continue to be the foundation for any Web site The new edition features nearly 50 percent new and updated content, including expanded coverage of CSS and scripting, new coverage of syndication and podcasting, and new sample HTML projects, including a personal Web page, an eBay auction page, a company Web site, and an online product catalog The companion Web site features an eight-page expanded Cheat Sheet with ready-reference information on commands, syntax, colors, CSS elements, and more Covers planning a Web site, formatting Web pages, using CSS, getting creative with colors and fonts, managing layouts, and integrating scripts

    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.

    This handy reference will help project managers and students enhance their knowledge in specific areas and test themselves on issues that are essential to successful project management.