Ruby and Sapphire
Ruby and Sapphire

Author: Richard W. Hughes

Publisher:

Published: 2017-01-01

Total Pages: 816

ISBN-13: 9780964509719

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From the dawn of time, ruby and sapphire have both attracted and fascinated humans in ways that few other items could.While objects of desire are found throughout the natural world, physical beauty is too often ephemeral. From the allure of a man, woman, flower or butterfly, through the fleeting moments of a sunset, there is little that lasts and practically nothing that can be passed down to our descendants. The exception is precious stones. Not only are they the most durable creations of mother nature, but their visual splendor is truly eternal.In this companion to his 2013 book, Ruby & Sapphire--A Collector's Guide, Richard Hughes examines these gems from the gemological standpoint, delving into these gems not just from the aesthetic, but also from the scientific point of view.The product of nearly 40 years of firsthand experience, it covers every aspect of the subject from A-Z. History, sources, prices, quality analysis, synthetics and treatments, everything is here. Ruby & Sapphire--A Gemologist's Guide represents the most comprehensive book ever written on a single precious stone. With over 1000 photos, maps and illustrations and 3500 references, it is nothing less than a tour-de-force of gemological scholarship.

Refactoring
Refactoring

Author: Jay Fields

Publisher: Pearson Education

Published: 2009-10-15

Total Pages: 555

ISBN-13: 0321604172

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The Definitive Refactoring Guide, Fully Revamped for Ruby With refactoring, programmers can transform even the most chaotic software into well-designed systems that are far easier to evolve and maintain. What’s more, they can do it one step at a time, through a series of simple, proven steps. Now, there’s an authoritative and extensively updated version of Martin Fowler’s classic refactoring book that utilizes Ruby examples and idioms throughout–not code adapted from Java or any other environment. The authors introduce a detailed catalog of more than 70 proven Ruby refactorings, with specific guidance on when to apply each of them, step-by-step instructions for using them, and example code illustrating how they work. Many of the authors’ refactorings use powerful Ruby-specific features, and all code samples are available for download. Leveraging Fowler’s original concepts, the authors show how to perform refactoring in a controlled, efficient, incremental manner, so you methodically improve your code’s structure without introducing new bugs. Whatever your role in writing or maintaining Ruby code, this book will be an indispensable resource. This book will help you Understand the core principles of refactoring and the reasons for doing it Recognize “bad smells” in your Ruby code Rework bad designs into well-designed code, one step at a time Build tests to make sure your refactorings work properly Understand the challenges of refactoring and how they can be overcome Compose methods to package code properly Move features between objects to place responsibilities where they fit best Organize data to make it easier to work with Simplify conditional expressions and make more effective use of polymorphism Create interfaces that are easier to understand and use Generalize more effectively Perform larger refactorings that transform entire software systems and may take months or years Successfully refactor Ruby on Rails code

Beyond the Ruby Veil
Beyond the Ruby Veil

Author: Mara Fitzgerald

Publisher: Hachette UK

Published: 2020-10-13

Total Pages: 245

ISBN-13: 1368053661

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A dark, queer YA fantasy that's perfect for fans of the Three Dark Crowns series. After Emanuela Ragno kills the one person in Occhia who can create water, she must find a way to save her city from dying of thirst. Emanuela Ragno always gets what she wants. With her daring mind and socialite schemes, she refuses to be the demure young lady everyone wants her to be. In her most ambitious move yet, she's about to marry Alessandro Morandi, her childhood best friend and the heir to the wealthiest house in Occhia. Emanuela doesn't care that she and her groom are both gay, because she doesn't want a love match. She wants power, and through Ale, she'll have it all. But Emanuela has a secret that could shatter her plans. In the city of Occhia, the only source of water is the watercrea, a mysterious being who uses magic to make water from blood. When their first bruise-like omen appears on their skin, all Occhians must surrender themselves to the watercrea to be drained of life. Everyone throughout history has given themselves up for the greater good. Everyone except Emanuela. She's kept the tiny omen on her hip out of sight for years. When the watercrea exposes Emanuela during her wedding ceremony and takes her to be sacrificed, Emanuela fights back ... and kills her. Now Occhia has no one to make their water and no idea how to get more. In a race against time, Emanuela and Ale must travel through the mysterious, blood-red veil that surrounds their city to uncover the secrets of the watercrea's magic and find a way to save their people -- no matter what it takes.

Do Not Lick This Book
Do Not Lick This Book

Author: Idan Ben-Barak

Publisher:

Published: 2018-06-05

Total Pages: 22

ISBN-13: 1250175364

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From highly respected microbiologist Ben-Barak and Frost, the creator of the YouTube sensation Dumb Ways to Die, comes an ingenious, interactive book about the germs that occupy real estate on all of our bodies. Full color.

Practical Object-oriented Design in Ruby
Practical Object-oriented Design in Ruby

Author: Sandi Metz

Publisher: Pearson Education

Published: 2013

Total Pages: 272

ISBN-13: 0321721330

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The Complete Guide to Writing More Maintainable, Manageable, Pleasing, and Powerful Ruby Applications Ruby's widely admired ease of use has a downside: Too many Ruby and Rails applications have been created without concern for their long-term maintenance or evolution. The Web is awash in Ruby code that is now virtually impossible to change or extend. This text helps you solve that problem by using powerful real-world object-oriented design techniques, which it thoroughly explains using simple and practical Ruby examples. This book focuses squarely on object-oriented Ruby application design. Practical Object-Oriented Design in Ruby will guide you to superior outcomes, whatever your previous Ruby experience. Novice Ruby programmers will find specific rules to live by; intermediate Ruby programmers will find valuable principles they can flexibly interpret and apply; and advanced Ruby programmers will find a common language they can use to lead development and guide their colleagues. This guide will help you Understand how object-oriented programming can help you craft Ruby code that is easier to maintain and upgrade Decide what belongs in a single Ruby class Avoid entangling objects that should be kept separate Define flexible interfaces among objects Reduce programming overhead costs with duck typing Successfully apply inheritance Build objects via composition Design cost-effective tests Solve common problems associated with poorly designed Ruby code

The Pearl Thief
The Pearl Thief

Author: Elizabeth Wein

Publisher: Little, Brown Books for Young Readers

Published: 2017-05-04

Total Pages: 305

ISBN-13: 1484719514

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Don’t miss Elizabeth Wein’s stunning new novel, Stateless Before Verity . . . there was Julie. When fifteen-year-old Julia Beaufort-Stuart wakes up in the hospital, she knows the lazy summer break she'd imagined won't be exactly what she anticipated. And once she returns to her grandfather's estate, a bit banged up but alive, she begins to realize that her injury might not have been an accident. One of her family's employees is missing, and he disappeared on the very same day she landed in the hospital. Desperate to figure out what happened, she befriends Euan McEwen, the Scottish Traveler boy who found her when she was injured, and his standoffish sister, Ellen. As Julie grows closer to this family, she witnesses firsthand some of the prejudices they've grown used to-a stark contrast to her own upbringing-and finds herself exploring thrilling new experiences that have nothing to do with a missing-person investigation. Her memory of that day returns to her in pieces, and when a body is discovered, her new friends are caught in the crosshairs of long-held biases about Travelers. Julie must get to the bottom of the mystery in order to keep them from being framed for the crime. This exhilarating coming-of-age story, a prequel to the Printz Honor Book Code Name Verity, returns to a beloved character just before she first takes flight.

Ruby Wizardry
Ruby Wizardry

Author: Eric Weinstein

Publisher: No Starch Press

Published: 2014-12-14

Total Pages: 353

ISBN-13: 1593275668

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The Ruby programming language is perfect for beginners: easy to learn, powerful, and fun to use! But wouldn't it be more fun if you were learning with the help of some wizards and dragons? Ruby Wizardry is a playful, illustrated tale that will teach you how to program in Ruby by taking you on a fantastical journey. As you follow the adventures of young heroes Ruben and Scarlet, you’ll learn real programming skills, like how to: –Use fundamental concepts like variables, symbols, arrays, and strings –Work with Ruby hashes to create a programmable breakfast menu –Control program flow with loops and conditionals to help the Royal Plumber –Test your wild and crazy ideas in IRB and save your programs as scripts –Create a class of mini-wizards, each with their own superpower! –Organize and reuse your code with methods and lists –Write your own amazing interactive stories using Ruby Along the way, you’ll meet colorful characters from around the kingdom, like the hacker Queen, the Off-White Knight, and Wherefore the minstrel. Ruby Wizardry will have you (or your little wizard) hooked on programming in no time. For ages 10+ (and their parents!)

Ruby Under a Microscope
Ruby Under a Microscope

Author: Pat Shaughnessy

Publisher: No Starch Press

Published: 2013

Total Pages: 362

ISBN-13: 1593275277

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"An under-the-hood look at how the Ruby programming language runs code. Extensively illustrated with complete explanations and hands-on experiments. Covers Ruby 2.x"--

Crafting Rails 4 Applications
Crafting Rails 4 Applications

Author: Jose Valim

Publisher: Pragmatic Bookshelf

Published: 2013-11-14

Total Pages: 269

ISBN-13: 1680503308

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Get ready to see Rails as you've never seen it before. Learn how to extend the framework, change its behavior, and replace whole components to bend it to your will. Eight different test-driven tutorials will help you understand Rails' inner workings and prepare you to tackle complicated projects with solutions that are well-tested, modular, and easy to maintain. This second edition of the bestselling Crafting Rails Applications has been updated to Rails 4 and discusses new topics such as streaming, mountable engines, and thread safety. Rails is one of the most extensible frameworks out there. This pioneering book deep-dives into the Rails plugin APIs and shows you, the intermediate Rails developer, how to use them to write better web applications and make your day-to-day work with Rails more productive. Rails Core developer Jose Valim guides you through eight different tutorials, each using test-driven development to build a new Rails plugin or application that solves common problems with these APIs. You'll learn how the Rails rendering stack works and customize it to read templates from the database while you discover how to mimic Active Record behavior, such as validations, in any other object. You'll find out how Rails integrates with Rack, the different ways to stream data from your web application, and how to mix Rails engines and Sinatra applications into your Rails apps, so you can choose the most appropriate tool for the job. In addition, you'll improve your productivity by customizing generators and responders. This book will help you understand Rails' inner workings, including generators, template handlers, internationalization, routing, and responders. With the knowledge you'll gain, you'll create well-tested, modular, and robust solutions for your next project.

Computer Graphics from Scratch
Computer Graphics from Scratch

Author: Gabriel Gambetta

Publisher: No Starch Press

Published: 2021-05-13

Total Pages: 250

ISBN-13: 1718500769

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Computer Graphics from Scratch demystifies the algorithms used in modern graphics software and guides beginners through building photorealistic 3D renders. Computer graphics programming books are often math-heavy and intimidating for newcomers. Not this one. Computer Graphics from Scratch takes a simpler approach by keeping the math to a minimum and focusing on only one aspect of computer graphics, 3D rendering. You’ll build two complete, fully functional renderers: a raytracer, which simulates rays of light as they bounce off objects, and a rasterizer, which converts 3D models into 2D pixels. As you progress you’ll learn how to create realistic reflections and shadows, and how to render a scene from any point of view. Pseudocode examples throughout make it easy to write your renderers in any language, and links to live JavaScript demos of each algorithm invite you to explore further on your own. Learn how to: Use perspective projection to draw 3D objects on a 2D plane Simulate the way rays of light interact with surfaces Add mirror-like reflections and cast shadows to objects Render a scene from any camera position using clipping planes Use flat, Gouraud, and Phong shading to mimic real surface lighting Paint texture details onto basic shapes to create realistic-looking objects Whether you’re an aspiring graphics engineer or a novice programmer curious about how graphics algorithms work, Gabriel Gambetta’s simple, clear explanations will quickly put computer graphics concepts and rendering techniques within your reach. All you need is basic coding knowledge and high school math. Computer Graphics from Scratch will cover the rest.