Eloquent Ruby

It’s easy to write correct Ruby code, but to gain the fluency needed to write great Ruby code, you must go beyond syntax and absorb the “Ruby way” of thinking and problem solving. In Eloquent Ruby, Russ Olsen helps you write Ruby like true Rubyists do–so you can leverage its immense, surprising power. Olsen draws on years of experience internalizing the Ruby culture and teaching Ruby to other programmers. He guides you to the “Ah Ha!” moments when it suddenly becomes clear why Ruby works the way it does, and how you can take advantage of this language’s elegance and expressiveness. Eloquent Ruby starts small, answering tactical questions focused on a single statement, method, test, or bug. You’ll learn how to write code that actually looks like Ruby (not Java or C#); why Ruby has so many control structures; how to use strings, expressions, and symbols; and what dynamic typing is really good for. Next, the book addresses bigger questions related to building methods and classes. You’ll discover why Ruby classes contain so many tiny methods, when to use operator overloading, and when to avoid it. Olsen explains how to write Ruby code that writes its own code–and why you’ll want to. He concludes with powerful project-level features and techniques ranging from gems to Domain Specific Languages. A part of the renowned Addison-Wesley Professional Ruby Series, Eloquent Ruby will help you “put on your Ruby-colored glasses” and get results that make you a true believer.

Use Components to Improve Maintainability, Reduce Complexity, and Accelerate Testing in Large Rails Applications “This book gives Ruby pros a comprehensive guide for increasing the sophistication of their designs, without having to forsake the principles of elegance that keep them in our corner of the software world.” —Obie Fernandez, author, The RailsTM 5 Way, Fourth Edition As Rails applications grow, even experienced developers find it difficult to navigate code bases, implement new features, and keep tests fast. Components are the solution, and Component-Based Rails Applications shows how to make the most of them. Writing for programmers and software team leads who are comfortable with Ruby and Rails, Stephan Hagemann introduces a practical, start-to-finish methodology for modernizing and restructuring existing Rails applications. One step at a time, Hagemann demonstrates how to revamp Rails applications to exhibit visible, provably independent, and explicitly connected parts—thereby simplifying them and making them far easier for teams to manage, change, and test. Throughout, he introduces design concepts and techniques you can use to improve applications of many kinds, even if they weren’t built with Rails or Ruby. Learn how components clarify intent, improve collaboration, and simplify innovation and maintenance Create a full Rails application within a component, from first steps to migrations and dependency management Test component-based applications, manage assets and dependencies, and deploy your application to production Identify the seams in an existing Rails application, and refactor it to extract components Master a scripted, repeatable approach for refactoring Rails applications of any size Use component-based Rails with two popular structural patterns: hexagonal and DCI architecture Leverage your new component skills with other frameworks and languages Overcome the unique challenges that arise as you componentize Rails applications If you’re ready to simplify and revitalize your complex Rails systems, you’re ready for Component-Based Rails Applications. Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details.

Cybellium Ltd is dedicated to empowering individuals and organizations with the knowledge and skills they need to navigate the ever-evolving computer science landscape securely and learn only the latest information available on any subject in the category of computer science including: - Information Technology (IT) - Cyber Security - Information Security - Big Data - Artificial Intelligence (AI) - Engineering - Robotics - Standards and compliance Our mission is to be at the forefront of computer science education, offering a wide and comprehensive range of resources, including books, courses, classes and training programs, tailored to meet the diverse needs of any subject in computer science. Visit https://www.cybellium.com for more books.

Computer programming can be intimidating for anyone, particularly a beginner. Making that task a bit easier is Ruby, an open-source programming language that is becoming increasingly popular among middle school and high school students. Readers are introduced to the many facets of Ruby, including the language's history, the basics of operation, and implementation of the system's application framework, Ruby on Rails. Discussions of less than optimal aspects of the system and user concerns ensure that the coverage is well-rounded. The accessible text is as easy to understand as Ruby itself. Get to know Ruby!

You Will Learn Ruby! Zed Shaw has perfected the world’s best system for learning Ruby. Follow it and you will succeed—just like the hundreds of thousands of beginners Zed has taught to date! You bring the discipline, commitment, and persistence; the author supplies everything else. In Learn Ruby the Hard Way, Third Edition, you’ll learn Ruby by working through 52 brilliantly crafted exercises. Read them. Type their code precisely. (No copying and pasting!) Fix your mistakes. Watch the programs run. As you do, you’ll learn how software works; what good programs look like; how to read, write, and think about code; and how to find and fix your mistakes using tricks professional programmers use. Most importantly, you’ll learn the following, which you need to start writing excellent Ruby software of your own: • Installing your Ruby environment • Organizing and writing code • Ruby symbols and keywords • Basic mathematics • Variables and printing • Strings and text • Interacting with users • Working with files • Using and creating functions • Looping and logic • Arrays and elements • Hashmaps • Program design • Object-oriented programming • Inheritance and composition • Modules, classes, and objects • Project “skeleton” directories • Debugging and automated testing • Advanced user input • Text processing • Basic game development • Basic web development It’ll Be Hard At First. But Soon, You’ll Just Get It—And That Will Feel Great! This tutorial will reward you for every minute you put into it. Soon, you’ll know one of the world’s most powerful, popular programming languages. You’ll be a Ruby programmer.

“Ruby on Rails™ Tutorial by Michael Hartl has become a must-read for developers learning how to build Rails apps.” —Peter Cooper, Editor of Ruby Inside Used by sites as diverse as Twitter, GitHub, Disney, and the Yellow Pages, Ruby on Rails is one of the most popular frameworks for developing web applications, but it can be challenging to learn and use. Whether you’re new to web development or new only to Rails, Ruby on Rails™ Tutorial, Third Edition, is the solution. Best-selling author and leading Rails developer Michael Hartl teaches Rails by guiding you through the development of three example applications of increasing sophistication, focusing on the fundamental techniques in web development needed for virtually any kind of application. The updates to this edition include simplified installation via a standard development environment in the cloud, use of the default Rails stack throughout, a light-weight testing approach, an all-new section on image upload, and an all-new chapter on account activation and password resets, including sending email with Rails. This indispensable guide provides integrated tutorials not only for Rails, but also for the essential Ruby, HTML, CSS, and SQL skills you’ll need when developing web applications. Hartl explains how each new technique solves a real-world problem, and then he demonstrates it with bite-sized code that’s simple enough to understand, yet novel enough to be useful. Whatever your previous web development experience, this book will guide you to true Rails mastery. This book will help you Install and set up your Rails development environment, including a pre-installed integrated development environment (IDE) in the cloud Go beyond generated code to truly understand how to build Rails applications from scratch Learn testing and test-driven development (TDD) Effectively use the Model-View-Controller (MVC) pattern Structure applications using the REST architecture Build static pages and transform them into dynamic ones Master the Ruby programming skills all Rails developers need Create high-quality site layouts and data models Implement registration and authentication systems, including validation and secure passwords Update, display, and delete users Upload images in production using a cloud storage service Implement account activation and password reset, including sending email with Rails Add social features and microblogging, including an introduction to Ajax Record version changes with Git and create a secure remote repository at Bitbucket Deploy your applications early and often with Heroku

If you’re a web developer or designer ready to learn Rails, this unique book is the ideal way to start. Rather than throw you into the middle of the framework’s Model-View-Controller architecture, Learning Rails 3 works from the outside in. You’ll begin with the foundations of the Web you already know, and learn how to create something visible with Rails’ view layer. Then you’ll tackle the more difficult inner layers: the database models and controller code. All you need to get started is HTML experience. Each chapter includes exercises and review questions to test your understanding as you go. Present content by building an application with a basic view and a simple controller Build forms and process their results, progressing from simple to more complex Connect forms to models by setting up a database, and create code that maps to database structures Use Rails scaffolding to build applications from a view-centric perspective Add common web application elements such as sessions, cookies, and authentication Build applications that combine data from multiple tables Send and receive email messages from your applications "Learning Rails 3 feels like a brisk pair programming session with professionals who know how to use Ruby on Rails to get things done, and get them done well." -Alan Harris, author of Sinatra: Up and Running

Discusses the evolution of WHOIS and how policy changes will affect WHOIS’ place in IT today and in the future This book provides a comprehensive overview of WHOIS. The text begins with an introduction to WHOIS and an in-depth coverage of its forty-year history. Afterwards it examines how to use WHOIS and how WHOIS fits in the overall structure of the Domain Name System (DNS). Other technical topics covered include WHOIS query code and WHOIS server details. The book also discusses current policy developments and implementations, reviews critical policy documents, and explains how they will affect the future of the Internet and WHOIS. Additional resources and content updates will be provided through a supplementary website. Includes an appendix with information on current and authoritative WHOIS services around the world Provides illustrations of actual WHOIS records and screenshots of web-based WHOIS query interfaces with instructions for navigating them Explains network dependencies and processes related to WHOIS utilizing flowcharts Contains advanced coding for programmers Visit the book's companion website http://whois.knujon.com for technical and policy documents concerning WHOIS, WHOIS code examples, internet locations for WHOIS databases and more. WHOIS Running the Internet: Protocol, Policy, and Privacy is written primarily for internet developers, policy developers, industry professionals in law enforcement, digital forensic investigators, and intellectual property attorneys. Garth O. Bruen is an Internet policy and security researcher whose work has been published in the Wall Street Journal and the Washington Post. Since 2012 Garth Bruen has served as the North American At-Large Chair to the Internet Corporation of Assigned Names and Numbers (ICANN). In 2003 Bruen created KnujOn.com with his late father, Dr. Robert Bruen, to process and investigate Internet abuse complaints (SPAM) from consumers. Bruen has trained and advised law enforcement at the federal and local levels on malicious use of the Domain Name System in the way it relates to the WHOIS record system. He has presented multiple times to the High Technology Crime Investigation Association (HTCIA) as well as other cybercrime venues including the Anti-Phishing Working Group (APWG) and the National Center for Justice and the Rule of Law at The University of Mississippi School of Law. Bruen also teaches the Fisher College Criminal Justice School in Boston where he develops new approaches to digital crime.

Josh Kaufman, bestselling author of The Personal MBA, is back with his new book, The First Twenty Hours, to teach readers how to learn anything... fast! 'Lots of books promise to change your life. This one actually will' -Seth Godin Pick up any new skill in just 20 hours... Want to learn to paint, play the piano, launch a business, fly a plane? Then pick up this book and set aside twenty hours to go from knowing nothing to performing like a pro. That's it. Josh Kaufman, author of international bestseller The Personal MBA, has developed this brilliant approach to mastering anything fast. You'll learn how to: • Focus energy on acquiring key skill sets • Eliminate obstacles and discover critical tools • Create rapid feedback loops • Work against the clock to get better fast With examples ranging from writing a web program to learning an instrument to picking up windsurfing, Kaufman shows how to break complexity into simple tasks, make the very best of your limited time and solve unexpected problems. In The First 20 Hours you'll learn how to acquire any skill in record time - and have a lot of fun along the way. 'After reading this, you'll be ready to take on any number of skills and make progress on that big project you've been putting off for years' Chris Guillebeau, author of The $100 Startup

Since Test-Driven Infrastructure with Chef first appeared in mid-2011, infrastructure testing has begun to flourish in the web ops world. In this revised and expanded edition, author Stephen Nelson-Smith brings you up to date on this rapidly evolving discipline, including the philosophy driving it and a growing array of tools. You’ll get a hands-on introduction to the Chef framework, and a recommended toolchain and workflow for developing your own test-driven production infrastructure. Several exercises and examples throughout the book help you gain experience with Chef and the entire infrastructure-testing ecosystem. Learn how this test-first approach provides increased security, code quality, and peace of mind. Explore the underpinning philosophy that infrastructure can and should be treated as code Become familiar with the MASCOT approach to test-driven infrastructure Understand the basics of test-driven and behavior-driven development for managing change Dive into Chef fundamentals by building an infrastructure with real examples Discover how Chef works with tools such as Virtualbox and Vagrant Get a deeper understanding of Chef by learning Ruby language basics Learn the tools and workflow necessary to conduct unit, integration, and acceptance tests

The Librarian’s Introduction to Programming Languages presents case studies and practical applications for using the top programming languages in library and information settings. While there are books and Web sites devoted to teaching programming, there are few works that address multiple programming languages or address the specific reasons why programming is a critical area of learning for library and information science professionals. There are many books on programming languages but no recent items directly written for librarians that span a variety of programs. Many practicing librarians see programming as something for IT people or beyond their capabilities. This book will help these librarians to feel comfortable discussing programming with others by providing an understanding of when the language might be useful, what is needed to make it work, and relevant tools to extend its application. Additionally, the inclusion of practical examples lets readers try a small “app” for the language. This also will assist readers who want to learn a language but are unsure of which language would be the best fit for them in terms of learning curve and application. The languages covered are JavaScript, PERL, PHP, SQL, Python, Ruby, C, C#, and Java. This book is designed to provide a basic working knowledge of each language presented. Case studies show the programming language used in real ways, and resources for exploring each language in more detail are also included.

If you’re a web developer or designer ready to learn Ruby on Rails, this hands-on guide is the ideal way to get started. Rather than toss you into the middle of the framework’s Model-View-Controller architecture, as many books do, Learning Rails 5 begins with the foundations of the Web you already know. You’ll learn how to create something visible with Rails’ view layer before diving into the more difficult inner layers: the database models and controller code. All you need to begin your Rails journey is HTML experience. Each chapter includes exercises and review questions to test your understanding as you go. Present content by building an application with a basic view and a simple controller Build forms and process their results, progressing from simple to more complex Use Rails scaffolding and REST to build effective applications quickly Connect forms to models and create code that maps directly to database structures Build applications that combine data from multiple tables Use migrations to track changes to your database over time Add common elements such as sessions, cookies, and authentication

Provides information on using PHP and MySQL to build and manage database-driven websites.

Provides information on using PHP and MySQL to build and manage database-driven websites.

You've decided to tackle machine learning - because you're job hunting, embarking on a new project, or just think self-driving cars are cool. But where to start? It's easy to be intimidated, even as a software developer. The good news is that it doesn't have to be that hard. Master machine learning by writing code one line at a time, from simple learning programs all the way to a true deep learning system. Tackle the hard topics by breaking them down so they're easier to understand, and build your confidence by getting your hands dirty. Peel away the obscurities of machine learning, starting from scratch and going all the way to deep learning. Machine learning can be intimidating, with its reliance on math and algorithms that most programmers don't encounter in their regular work. Take a hands-on approach, writing the Python code yourself, without any libraries to obscure what's really going on. Iterate on your design, and add layers of complexity as you go. Build an image recognition application from scratch with supervised learning. Predict the future with linear regression. Dive into gradient descent, a fundamental algorithm that drives most of machine learning. Create perceptrons to classify data. Build neural networks to tackle more complex and sophisticated data sets. Train and refine those networks with backpropagation and batching. Layer the neural networks, eliminate overfitting, and add convolution to transform your neural network into a true deep learning system. Start from the beginning and code your way to machine learning mastery. What You Need: The examples in this book are written in Python, but don't worry if you don't know this language: you'll pick up all the Python you need very quickly. Apart from that, you'll only need your computer, and your code-adept brain.

It's easy to write "correct" Ruby code. But it's far harder to gain the fluency needed to write great Ruby code. To do that, you need to go beyond syntax and absorb the "Ruby way" of thinking and problem solving. In Eloquent Ruby, Russ Olsen helps you understand Ruby like true Rubyists do--so you can leverage its immense, surprising power. Olsen draws on years of experience internalizing the Ruby culture and teaching Ruby to other programmers. He guides you to the "Ah Ha!" moments when it suddenly becomes clear why Ruby works the way it does and how you can take advantage of its unique approach. Eloquent Ruby starts small, answering tactical questions focused on a single statement, method, test, or bug. You'll learn how to write code that actually looks like Ruby (not Java); why Ruby has so many control structures; how to use strings, expressions, and symbols; and what dynamic typing is really good for. Next, Olsen turns to bigger questions related to building methods and classes. You'll discover why Ruby classes contain so many tiny methods, when to use operator overloading, and when to avoid it. Olsen explains how to write Ruby code that writes its own code--and why you'll want to. He concludes with powerful project-level features and techniques ranging from gems to Domain Specific Languages. The newest book in the renowned Addison-Wesley Professional Ruby Series, Eloquent Ruby will help you "put on your Ruby-colored glasses" and get results that make you a true believer.

Get Started Fast with Modern JavaScript Web Development! With the arrival of HTML5, jQuery, and Ajax, JavaScript web development skills are more valuable than ever! This complete, hands-on JavaScript tutorial covers everything you need to know now. Using line-by-line code walkthroughs and end-of-chapter exercises, top web developer and speaker Tim Wright will help you get results fast, even if you’ve never written a line of JavaScript before. Smart, friendly, enthusiastic, and packed with modern examples, Learning JavaScript covers both design-level and development-level JavaScript. You’ll find expert knowledge and best practices for everything from jQuery and interface design to code organization and front-end templating. Wright’s focused coverage includes regular break points and clear reviews that make modern JavaScript easier to learn—and easier to use! Learning JavaScript is your fastest route to success with JavaScript—whether you’re entirely new to the language or you need to sharpen and upgrade skills you first learned a decade ago! Coverage includes • Mastering all of the JavaScript concepts and terminology you need to write new programs or efficiently modify existing code • Creating robust, secure code for both the design and development levels • Maximizing usability, reusability, accessibility, clarity, security, and performance • Taking full advantage of the browser environments your code will run in • Accessing the DOM to create behaviors and data interactions • Storing data for easy and efficient access • Using variables, functions, loops, and other core language features • Interacting with users through events • Communicating with servers through Ajax • Improving your productivity with JavaScript libraries

Normal 0 false false false MicrosoftInternetExplorer4 Quickly start using jQuery Mobile with HTML, CSS, and JavaScript. jQuery Mobile makes it easy for developers to add "native" mobile functionality to their sites and applications, delivering seamless experiences to customers using diverse mobile devices, all from a single code base. In this book, leading mobile expert Phil Dutson helps readers master the latest version of jQuery Mobile, even if they have no previous experience. In just 24 lessons of one hour or less, Dutson guides readers through every step of creating and customizing a mobile website with jQuery Mobile. Each short, easy lesson builds on all that's come before, teaching jQuery Mobile's newest features in the context of real solution development. Readers learn how to: -Create user interfaces with toolbars, buttons, forms, lists, events, and themes -Build responsive layouts and develop new themes -Detect diverse devices -Encode and embed mobile video -Use mobile device simulators -Build apps with PhoneGap and jQuery Mobile -Incorporate QR and Microsoft Tag Codes -And much more Step-by-step instructions walk developers through common questions, issues, and tasks... Quizzes and Exercises build and test knowledge... "Did You Know?" tips offer insider advice and shortcuts... and "Watch Out!" alerts help readers avoid problems. By the time they're finished, readers will be comfortable going beyond the book to "mobilize" virtually any site.

A young Rajput, orphaned by the revolt of 1857, travels many years later from Cawnpore to Delhi on a mission to meet the great poet Mirza Asadullah Khan Ghalib himself. Young Mir Taqi Mir, a rising star in the world of poetry, meets the first great love of his life, Nurus Saadat, an exquisite beauty from Isfahan. An aspiring poet learns of the life and work of Shaikh Mushafi through the stories told by his widow. Poets and poetry occupy centre stage in these magnificent tales by Shamsur Rahman Faruqi, the celebrated master of Urdu prose. Set in the great cities of north India and spanning the glittering age of the Mughals, The Sun That Rose from the Earth brilliantly recreates the lives of several poets who exemplify the land and culture of Hindustan—from Ghalib and Mir to Kishan Chand Ikhlas and Mushafi. With elegance and skill, Faruqi transforms these figures into vital, breathing beings alive in all their flawed magnificence.