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If youre 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 frameworks Model-View-Controller architecture, as many books do, Learning Rails 5 begins with the foundations of the Web you already know.Youll 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 controllerBuild forms and process their results, progressing from simple to more complexUse Rails scaffolding and REST to build effective applications quicklyConnect forms to models and create code that maps directly to database structuresBuild applications that combine data from multiple tablesUse migrations to track changes to your database over timeAdd common elements such as sessions, cookies, and authentication

Welcome to Scientific Python and its community. If youre a scientist who programs with Python, this practical guide not only teaches you the fundamental parts of SciPy and libraries related to it, but also gives you a taste for beautiful, easy-to-read code that you can use in practice. Youll learn how to write elegant code thats clear, concise, and efficient at executing the task at hand.Throughout the book, youll work with examples from the wider scientific Python ecosystem, using code that illustrates principles outlined in the book. Using actual scientific data, youll work on real-world problems with SciPy, NumPy, Pandas, scikit-image, and other Python libraries.Explore the NumPy array, the data structure that underlies numerical scientific computationUse quantile normalization to ensure that measurements fit a specific distributionRepresent separate regions in an image with a Region Adjacency GraphConvert temporal or spatial data into frequency domain data with the Fast Fourier TransformSolve sparse matrix problems, including image segmentations, with SciPys sparse modulePerform linear algebra by using SciPy packagesExplore image alignment (registration) with SciPys optimize moduleProcess large datasets with Python data streaming primitives and the Toolz library

This book contains tutorials about how to understand what drones can do, and projects about how to make your own flying craft, from some of the earliest practitioners in the field.

Can drinking coffee help people live longer? What makes a stocks price go up? Why did you get the flu? Causal questions like these arise on a regular basis, but most people likely have not thought deeply about how to answer them.This book helps you think about causality in a structured way: What is a cause, what are causes good for, and what is compelling evidence of causality? Author Samantha Kleinberg shows you how to develop a set of tools for thinking more critically about causes. Youll learn how to question claims, identify causes, make decisions based on causal information, and verify causes through further tests.Whether its figuring out what data you need, or understanding that the way you collect and prepare data affects the conclusions you can draw from it, Why will help you sharpen your causal inference skills.

How can you design technology that becomes a part of a users life and not a distraction from it? This practical book explores the concept of calm technology, a method for smoothly capturing a users attention only when necessary, while calmly remaining in the background most of the time. Youll learn how to design products that work well, launch well, are easy to support, easy to use, and remain unobtrusive.Author Amber Case presents ideas first introduced by researchers at Xerox PARC in 1995, and explains how they apply to our current technology landscape, especially the Internet of Things. This book is ideal for UX and product designers, managers, creative directors, and developers. Youll learn:The importance and challenge of designing technology that respects our attentionPrinciples of calm designperipheral attention, context, and ambient awarenessCalm communication patternsimproving attention through a variety of sensesExercises for improving existing products through calm technologyPrinciples and patterns of calm technology for companies and teamsThe origins of calm technology at Xerox PARC

Current hype aside, the Internet of Things will ultimately become as fundamental as the Internet itself, with lots of opportunities and trials along the way. To help you navigate these choppy waters, this practical guide introduces a dedicated methodology for businesses preparing to transition towards IoT-based business models.With a set of best practices based on case study analysis, expert interviews, and the authors own experience, the Ignite | IoT Methodology outlined in this book delivers actionable guidelines to assist you with IoT strategy management and project execution. Youll also find a detailed case study of a project fully developed with this methodology.This book consists of three parts:Illustrative case studies of selected IoT domains, including smart energy, connected vehicles, manufacturing and supply chain management, and smart citiesThe Ignite | IoT Methodology for defining IoT strategy, preparing your organization for IoT adoption, and planning and executing IoT projectsA detailed case study of the IIC Track & Trace testbed, one of the first projects to be fully developed according to the Ignite | IoT Methodology

Take advantage of Bitcoins underlying technology, the blockchain, to build massively scalable, decentralized applications known as dapps. In this practical guide, author Siraj Raval explains why dapps will become more widely usedand profitablethan todays most popular web apps. Youll learn how the blockchains cryptographically stored ledger, scarce-asset model, and peer-to-peer (P2P) technology provide a more flexible, better-incentivized structure than current software models.Once you understand the theory behind dapps and what a thriving dapp ecosystem looks like, Raval shows you how to use existing tools to create a working dapp. Youll then take a deep dive into the OpenBazaar decentralized market, and examine two case studies of successful dapps currently in use.Learn advances in distributed-system technology that make distributed data, wealth, identity, computing, and bandwidth possibleBuild a Twitter clone with the Go language, distributed architecture, decentralized messaging app, and peer-to-peer data storeLearn about OpenBazaars decentralized market and its structure for supporting transactionsExplore Lighthouse, a decentralized crowdfunding project that rivals sites such as Kickstarter and IndieGogoTake an in-depth look at LaZooz, a P2P ridesharing app that transmits data directly between riders and drivers

If youre a business team leader, CIO, business analyst, or developer interested in how Apache Hadoop and Apache HBase-related technologies can address problems involving large-scale data in cost-effective ways, this book is for you. Using real-world stories and situations, authors Ted Dunning and Ellen Friedman show Hadoop newcomers and seasoned users alike how NoSQL databases and Hadoop can solve a variety of business and research issues.Youll learn about early decisions and pre-planning that can make the process easier and more productive. If youre already using these technologies, youll discover ways to gain the full range of benefits possible with Hadoop. While you dont need a deep technical background to get started, this book does provide expert guidance to help managers, architects, and practitioners succeed with their Hadoop projects.Examine a day in the life of big data: Indias ambitious Aadhaar projectReview tools in the Hadoop ecosystem such as Apaches Spark, Storm, and Drill to learn how they can help youPick up a collection of technical and strategic tips that have helped others succeed with HadoopLearn from several prototypical Hadoop use cases, based on how organizations have actually applied the technologyExplore real-world stories that reveal how MapR customers combine use cases when putting Hadoop and NoSQL to work, including in production

Like the popular guides The MX Series and Juniper QFX5100 Series, this practical book-written by the same author-introduces new QFX10000 concepts in switching and virtualization, specifically in the core of the data center network. This new book by Douglas Hanks is the authoritative guide

The fifth edition of this popular pocket reference puts the syntax of specific PL/SQL language elements right at your fingertips, including features added in Oracle Database 12c. Whether you're a developer or database administrator, when you need answers quickly, the Oracle PL/SQL Language Pocket Reference will save you hours of frustration

Apples new Photos app lets you do a whole lot more than simply store and edit pictures and videos on a Mac or iOS device. With this comprehensive guide, youll learn how to import, organize, and share your digital memories, as well as how to improve, print, and use your photos in creative projects. With Lesa Sniders step-by-step instructions and expert advice, youll master Photos and tame your image libraryand have fun along the way!The important stuff you need to know:Migrate from iPhoto. Learn how to make a quick and smooth transition.Organize your collection with ease. Master the many ways to import, group, and categorize imagesand set up iCloud Family Sharing.Find your photos quickly. Employ Photos powerful labeling, keyword and facial recognition features to optimize searches.Sharpen your editing skills. Skillfully use Photos impressive image- and video-editing tools on your Mac or iOS device.Access photos anywhere. Sync your library to all of your Apple devices so your photos travel with you wherever you go.Share them online. Show your shots to everyone on your list by using shared albums, creating web galleries, posting them on Facebook, and more.Dive into creative projects. Build pro-level slideshows to share with others, and create gorgeous gift books, calendars, and cards.

This book is the "e;Hello, World"e; tutorial for building products, technologies, and teams in a startup environment. It's based on the experiences of the author, Yevgeniy (Jim) Brikman, as well as interviews with programmers from some of the most successful startups of the last decade, including Google, Facebook, LinkedIn, Twitter, GitHub, Stripe, Instagram, AdMob, Pinterest, and many others.Hello, Startup is a practical, how-to guide that consists of three parts: Products, Technologies, and Teams. Although at its core, this is a book for programmers, by programmers, only Part II (Technologies) is significantly technical, while the rest should be accessible to technical and non-technical audiences alike.If youre at all interested in startupswhether youre a programmer at the beginning of your career, a seasoned developer bored with large company politics, or a manager looking to motivate your engineersthis book is for you.

Today, big data is taken seriously, and data science is considered downright sexy. With this anthology of reports from award-winning journalist Mike Barlow, you'll appreciate how data science is fundamentally altering our world, for better and for worse.

Discover how graph databases can help you manage and query highly connected data. With this practical book, you'll learn how to design and implement a graph database that brings the power of graphs to bear on a broad range of problem domains. Whether you want to speed up your response to user queries or build a database that can adapt as your business evolves, this book shows you how to apply the schema-free graph model to real-world problems. This second edition includes new code samples and diagrams, using the latest Neo4j syntax, as well as information on new functionality. Learn how different organizations are using graph databases to outperform their competitors. With this book's data modeling, query, and code examples, you'll quickly be able to implement your own solution. Model data with the Cypher query language and property graph modelLearn best practices and common pitfalls when modeling with graphsPlan and implement a graph database solution in test-driven fashionExplore real-world examples to learn how and why organizations use a graph databaseUnderstand common patterns and components of graph database architectureUse analytical techniques and algorithms to mine graph database information

This practical guide shows you how to build your own software tools for customizing the GitHub workflow. Each hands-on chapter is a compelling story that walks you through the tradeoffs and considerations for building applications on top of various GitHub technologies.

And just as too much junk food can lead to obesity, too much junk information can lead to cluelessness. The Information Diet shows you how to thrive in this information glut-what to look for, what to avoid, and how to be selective.

This book is where your adventures with Bluetooth LE begin. You'll start your journey by getting familiar with your hardware options: Arduino, BLE modules, computers (including Raspberry Pi!), and mobile phones. From there, you'll write code and wire circuits to connect off-the-shelf sensors, and even go all the way to writing your own Bluetooth Services. Along the way you'll look at lightbulbs, locks, and Apple's iBeacon technology, as well as get an understanding of Bluetooth security--both how to beat other people's security, and how to make your hardware secure.

What is JavaScript Object Notation (JSON) and how can you put it to work? This concise guide helps busy IT professionals get up and running quickly with this popular data interchange format, and provides a deep understanding of how JSON works. Author Lindsay Bassett begins with an overview of JSON syntax, data types, formatting, and security concerns before exploring the many ways you can apply JSON today.From Web APIs and server-side language libraries to NoSQL databases and client-side frameworks, JSON has emerged as a viable alternative to XML for exchanging data between different platforms. If you have some programming experience and understand HTML and JavaScript, this is your book.Learn why JSON syntax represents data in name-value pairsExplore JSON data types, including object, string, number, and arrayFind out how you can combat common security concernsLearn how the JSON schema verifies that data is formatted correctlyExamine the relationship between browsers, web APIs, and JSONUnderstand how web servers can both request and create dataDiscover how jQuery and other client-side frameworks use JSONLearn why the CouchDB NoSQL database uses JSON to store data

What does it take to be the leader of a design firm or group? We often assume they have all the answers, but in this rapidly evolving industry theyre forced to find their way like the rest of us. So how do good design leaders manage? If you lead a design group, or want to understand the people who do, this insightful book explores behind-the-scenes strategies and tactics from leaders of top design companies throughout North America.Based on scores of interviews he conducted over a two-year periodfrom small companies to massive corporations like ESPNauthor Richard Banfield covers a wide range of topics, including:How design leaders create a healthy company cultureInnovative ways for attracting and nurturing talentCreating productive workspaces, and handling remote employeesStaying on top of demands while making time for themselvesConsistent patterns among vastly different leadership stylesTechniques and approaches for keeping the work pipeline fullMaking strategic and tactical plans for the futureMistakes that design leaders madeand how they bounced back

How can we build bridges from the digital world of the Internet to the analog world that surrounds us? By bringing accessibility to embedded components such as sensors and microcontrollers, JavaScript and Node.js might shape the world of physical computing as they did for web browsers. This practical guide shows hardware and software engineers, makers, and web developers how to talk in JavaScript with a variety of hardware platforms. Authors Patrick Mulder and Kelsey Breseman also delve into the basics of microcontrollers, single-board computers, and other hardware components.Use JavaScript to program microcontrollers with Arduino and EspruinoPrototype IoT devices with the Tessel 2 development platformLearn about electronic input and output components, including sensorsConnect microcontrollers to the Internet with the Particle Photon toolchainRun Node.js on single-board computers such as Raspberry Pi and Intel EdisonTalk to embedded devices with Node.js libraries such as Johnny-Five, and remotely control the devices with BluetoothUse MQTT as a message broker to connect devices across networksExplore ways to use robots as building blocks for shared experiences

As a web developer, you may not want to spend time making your web app secure, but it definitely comes with the territory. This practical guide provides you with the latest information on how to thwart security threats at several levels, including new areas such as microservices. Youll learn how to help protect your app no matter where it runs, from the latest smartphone to an older desktop, and everything in between.Author John Paul Mueller delivers specific advice as well as several security programming examples for developers with a good knowledge of CSS3, HTML5, and JavaScript. In five separate sections, this book shows you how to protect against viruses, DDoS attacks, security breaches, and other nasty intrusions.Create a security plan for your organization that takes the latest devices and user needs into accountDevelop secure interfaces, and safely incorporate third-party code from libraries, APIs, and microservicesUse sandboxing techniques, in-house and third-party testing techniques, and learn to think like a hackerImplement a maintenance cycle by determining when and how to update your application softwareLearn techniques for efficiently tracking security threats as well as training requirements that your organization can use

How can Apache Mesos make a difference in your organization? With this practical guide, youll learn how this cluster manager directs your datacenters resources, and provides real time APIs for interacting with (and developing for) the entire cluster. Youll learn how to use Mesos as a deployment system, like Ansible or Chef, and as an execution platform for building and hosting higher-level applications, like Hadoop.Author David Greenberg shows you how Mesos manages your entire datacenter as a single logical entity, eliminating the need to assign fixed sets of machines to applications. Youll quickly discover why Mesos is the ultimate DevOps tool.Understand Mesos architecture, and learn how it manages CPU, memory, and other resources across a clusterBuild an application on top of Mesos with Marathon, a platform for hosting services on MesosCreate new, production-ready frameworks for MesosWrite a custom executor to provide richer interaction between the Mesos scheduler and workersDive into advanced topics, including the reconciliation process, Docker integration, dynamic reservations, and persistent volumesLearn about todays Mesos initiatives that will likely become tomorrows features

BioCoder is a quarterly newsletter for DIYbio, synthetic bio, and anything related. You’ll discover:* Articles about interesting projects and experiments, such as the glowing plant* Articles about tools, both those you buy and those you build* Visits to DIYbio laboratories* Profiles of key people in the community* Announcements of events and other items of interest* Safety pointers and tips about good laboratory practice* Anything that’s interesting or useful: you tell us!And BioCoder is free (for the time being), unless you want a dead-tree version. We’d like BioCoder to become self supporting (maybe even profitable), but we’ll worry about that after we’ve got a few issues under our belt.If you’d like to contribute, send email to BioCoder@oreilly.com. Tell us what you’d like to do, and we’ll get you started.

Looking for efficiency gains in your business? If youre a business analyst, this practical guide will show you how to design effective business process management (BPM) applications. Every business uses business processesthese everyday tasks help you gain and retain customers, stay profitable, and keep your operations infrastructure functioning.BPM specialists Christine McKinty and Antoine Mottier show you step-by-step how to turn a simple business procedure into an automated, process-based application. Using hands-on examples, youll quickly learn how to create an online process thats easy to use. Each chapter builds on earlier material.You dont have to have any programming experience to design business processesand if you have skills in designing workflows and understanding human interactions with processes, you already have a headstart.Through the course of this book, you will:Build a prototype of an application pageCreate the most frequent use flow in a process, and define the data modelGenerate real process forms and produce the first version of the applicationConnect your application to external information systems, and then build and test the complete application

Powerful web-based REST and hypermedia-style APIs are becoming more common every day, but instead of applying the same techniques and patterns to hypermedia clients, many developers rely on custom client code. With this practical guide, youll learn how to move from one-off implementations to general-purpose client apps that are stable, flexible, and reusable.Author Mike Amundsen provides extensive background, easy-to-follow examples, illustrative dialogues, and clear recommendations for building effective hypermedia-based client applications. Along the way, youll learn how to harness many of the basic principles that underpin the Web.Convert HTML-only web apps into a JSON API serviceOvercome the challenges of maintaining plain JSON-style client appsDecouple the output format from the internal object model with the representor patternExplore client apps built with HALHypertext Application LanguageTackle reusable clients with the Request, Parse, Wait Loop (RPW) patternLearn the pros and cons of building client apps with the Siren content typeDeal with API versioning by adopting a change-over-time aestheticCompare how JSON, HAL, Siren, and Collection+JSON clients handle the Objects/Addresses/Actions ChallengeCraft a single client application that can consume multiple services

In todays fast and competitive world, a programs performance is just as important to customers as the features it provides. This practical guide teaches developers performance-tuning principles that enable optimization in C++. Youll learn how to make code that already embodies best practices of C++ design run faster and consume fewer resources on any computerwhether its a watch, phone, workstation, supercomputer, or globe-spanning network of servers.Author Kurt Guntheroth provides several running examples that demonstrate how to apply these principles incrementally to improve existing code so it meets customer requirements for responsiveness and throughput. The advice in this book will prove itself the first time you hear a colleague exclaim, Wow, that was fast. Who fixed something?Locate performance hot spots using the profiler and software timersLearn to perform repeatable experiments to measure performance of code changesOptimize use of dynamically allocated variablesImprove performance of hot loops and functionsSpeed up string handling functionsRecognize efficient algorithms and optimization patternsLearn the strengthsand weaknessesof C++ container classesView searching and sorting through an optimizers eyeMake efficient use of C++ streaming I/O functionsUse C++ thread-based concurrency features effectively

Start Making! is a program developed by the Clubhouse Network to engage young people all over the world in Maker-inspired activities. With this guide, you will discover how to plan and coordinate Start Making! projects in your home, school, library, community center, after-school club, or makerspace.

You don't need kids to tell you that Making is Fun. Just get them in a room with simple projects, common household tools and utensils, inexpensive supplies, and their imagination. Make: Simple Flying Things offers five flight projects that are easy to build, inexpensive, and expandable--just add imagination!

Want to learn how to program and think like a computer scientist? This practical guide gets you started on your programming journey with the help of Perl 6, the younger sister of the popular Perl programming language. Ideal for beginners, this hands-on book includes over 100 exercises with multiple solutions, and more than 1,000 code examples so you can quickly practice what you learn. Experienced programmersespecially those who know Perl 5will also benefit.Divided into two parts, Think Perl 6 starts with basic concepts that every programmer needs to know, and then focuses on different programming paradigms and some more advanced programming techniques. With two semesters worth of lessons, this book is the perfect teaching tool for computer science beginners in colleges and universities.Learn basic concepts including variables, expressions, statements, functions, conditionals, recursion, and loopsUnderstand commonly used basic data structures and the most useful algorithmsDive into object-oriented programming, and learn how to construct your own types and methods to extend the languageUse grammars and regular expressions to analyze textual contentExplore how functional programming can help you make your code simpler and more expressive

If you're comfortable using OS X, Xcode, and iOS-and familiar with Swift-this concise book shows you the basics of building your own apps for this wrist-mounted computer with Apple's WatchKit framework.