Michael Hartl

Used by sites as varied as Disney, GitHub, Shopify, and Airbnb, 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(TM) Tutorial, Sixth 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. The tutorial's examples focus on the general principles of web development needed for virtually any kind of website. The updates to this edition include full compatibility with Rails 6.This indispensable guide provides integrated tutorials not only for Rails, but also for the essential Ruby, HTML, CSS, and SQL skills you 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 while still being useful. Whatever your previous web development experience, this book will guide you to true Rails mastery.This book will help youInstall 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 GitHub Deploy your applications early and often with Heroku Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details.

“Ruby on Rails™ 3 Tutorial: Learn Rails by Example by Michael Hartl has become a must read for developers learning how to build Rails apps.”—Peter Cooper, Editor of Ruby InsideUsing Rails 3, developers can build web applications of exceptional elegance and power. Although its remarkable capabilities have made Ruby on Rails one of the world’s most popular web development frameworks, it can be challenging to learn and use. Ruby on Rails™ 3 Tutorial is the solution. Leading Rails developer Michael Hartl teaches Rails 3 by guiding you through the development of your own complete sample application using the latest techniques in Rails web development.Drawing on his experience building RailsSpace, Insoshi, and other sophisticated Rails applications, Hartl illuminates all facets of design and implementation—including powerful new techniques that simplify and accelerate development.You’ll find integrated tutorials not only for Rails, but also for the essential Ruby, HTML, CSS, JavaScript, and SQL skills you’ll need when developing web applications. Hartl explains how each new technique solves a real-world problem, and he demonstrates this 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 Go beyond generated code to truly understand how to build Rails applications from scratch Learn Test Driven Development (TDD) with RSpec 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 Define high-quality site layouts and data models Implement registration and authentication systems, including validation and secure passwords Update, display, and delete users Add social features and microblogging, including an introduction to Ajax Record version changes with Git and share code at GitHub Simplify application deployment with Heroku

An introduction to the command line

Ruby on Rails is fast displacing PHP, ASP, and J2EE as the development framework of choice for discriminating programmers, thanks to its elegant design and emphasis on practical results. RailsSpace teaches you to build large-scale projects with Rails by developing a real-world a social networking website like MySpace, Facebook, or Friendster. Inside, the authors walk you step by step from the creation of the site's virtually static front page, through user registration and authentication, and into a highly dynamic site, complete with user profiles, image upload, email, blogs, full-text and geographical search, and a friendship request system. In the process, you learn how Rails helps you control code complexity with the model-view-controller (MVC) architecture, abstraction layers, automated testing, and code refactoring, allowing you to scale up to a large project even with a small number of developers. This essential introduction to Rails provides The book's companion website provides the application source code, a blog with follow-up articles, narrated screencasts, and a working version of the RailSpace social network.

An Introduction to Version Control with Git

Given its ubiquity in mathematics, it may surprise you to learn that pi is, in fact, wrong. Building on the work of the mathematical heretics who preceded him, Michael Hartl published The Tau Manifesto on Tau Day (6/28), 2010, thereby launching what has become an international movement for mathematical sanity. Explore the reasons why pi is wrong—that is, why pi is a confusing and unnatural choice for the circle constant—and meet its replacement, tau. Skeptics beware: by the end of the manifesto you may be surprised to find yourself converted to tauism.

Learn Enough Text Editor to Be Dangerous is designed to help you learn to use what is arguably the most important item in the aspiring computer magician’s bag of tricks: a text editor. Learning how to use a text editor is an essential component of technical sophistication.

Learn Enough Ruby to Be Dangerous is a tutorial introduction to Ruby, an elegant and intuitive object-oriented programming language that is especially known for its use in web development. After this series, you'll be in a position to collaborate with millions of devs around the world, even if you're not a developer yourself (yet!), or continue your growth as a developer as you build towards the Ruby on Rails Tutorial.

HTML is the fundamental language of the Web, and every developer, designer, and even manager should know the basics. If tech is the new literacy, HTML is the alphabet. Learn Enough HTML to Be Dangerous puts things together like no other HTML tutorial: You deploy a live website in the first section. You learn HTML tags in context, using real-world examples. You take the first steps toward Cascading Style Sheets using inline styles. You build a reference table of HTML tags, using the HTML table tag. It’s totally meta. You don’t have to know everything about HTML, of course—just enough to be dangerous.

All You Need to Know, and Nothing You Don't, About Core Tools for Software DevelopmentThree of the core tools needed for modern software development are the Unix command line, a text editor, and version control with Git. But you don't need to learn everything about them, just how to use them efficiently to solve real problems. In Learn Enough Developer Tools to Be Dangerous, renowned instructor Michael Hartl teaches the specific concepts, skills, and approaches you need so you can learn to write apps, get hired, collaborate, and maybe even launch your own company.Even if you've never used (or even heard of) these tools before, Hartl helps you quickly build technical sophistication and master the lore you need to succeed. Focused exercises help you internalize what matters, without wasting time on details pros don't care about. Soon, it'll be like you were born knowing this stuff--and you'll be suddenly, seriously dangerous.Learn enough about . . . Running a terminal, entering and editing commands, and using man pages Manipulating and inspecting files: from basic copying to finding patterns Organizing files with directories Learning Minimum Viable Vim Basic and advanced editing techniques with editors like Atom and VS Code Using the human-readable Markdown language for writing quick documentation Formatting source code and writing executable scripts Getting started with Git and GitHub Using key Git workflows: commit, push, branch, merge, and more Collaborating on Git projects and resolving code conflicts Setting up dev environments: macOS, Linux, Windows, and cloud Michael Hartl's Learn Enough series includes books and video courses that focus on the most important parts of each subject, so you don't have to learn everything to get started--you just have to learn enough to be dangerous and solve technical problems yourself.Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details.

All You Need to Know, and Nothing You Don't, to Solve Real Problems with Python Python is one of the most popular programming languages in the world, used for everything from shell scripts to web development to data science. As a result, Python is a great language to learn, but you don't need to learn "everything" to get started, just how to use it efficiently to solve real problems. In Learn Enough Python to Be Dangerous , renowned instructor Michael Hartl teaches the specific concepts, skills, and approaches you need to be professionally productive. Even if you've never programmed before, Hartl helps you quickly build technical sophistication and master the lore you need to succeed. Hartl introduces Python both as a general-purpose language and as a specialist tool for web development and data science, presenting focused examples and exercises that help you internalize what matters, without wasting time on details pros don't care about. Soon, it'll be like you were born knowing this stuff--and you'll be suddenly, seriously dangerous . Learn enough about . . . Michael Hartl's Learn Enough Series includes books and video courses that focus on the most important parts of each subject, so you don't have to learn everything to get started--you just have to learn enough to be dangerous and solve technical problems yourself. Like this book? Don't miss Michael Hartl's companion video tutorial, Learn Enough Python to Be Dangerous LiveLessons . Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details.

All You Need to Know, and Nothing You Don't, to Write JavaScript for the Web and BeyondJavaScript plays a key role in modern software development, not only because it is the only language that runs inside virtually all web browsers, but also because it has become widely used for back-end and general-purpose development as well. Although JavaScript is a big language, you don't need to learn "everything" about it to get started, just how to use it efficiently to solve real problems. In Learn Enough JavaScript to Be Dangerous, renowned instructor Michael Hartl teaches the specific concepts, skills, and approaches you need to be professionally productive.Even if you've never programmed before, Hartl helps you quickly build technical sophistication and master the lore you need to succeed. Treating JavaScript as a general-purpose language right from the start, Hartl offers examples for creating dynamic effects in browsers and for writing scripts and modules using Node.js. Focused exercises help you internalize what matters, without wasting time on details pros don't care about. Soon, it'll be like you were born knowing this stuff--and you'll be suddenly, seriously dangerous .Learn enough about . . .Michael Hartl's Learn Enough series includes books and video courses that focus on the most important parts of each subject, so you don't have to learn everything to get started--you just have to learn enough to be dangerous and solve technical problems yourself.Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details.

Ready to take the software development plunge? If so, it's essential to learn how to set up your computer as a development environment, appropriate for developing websites and software applications. This easy-to-follow and up-to-date tutorial shows you how. This booklet is available for free at www.learnenough.com/dev and is provided here for only for convenience.

The Ruby on Rails 2.3 Tutorial teaches web development with Ruby on Rails, an open-source web framework that powers many of the web's top sites, including Twitter, Hulu, and the Yellow Pages. Ruby on Rails 2.3 Tutorial helps you learn Rails by example through the development of a substantial sample application, including a site layout, a user data model, a full registration and authentication system, user-status associations, social "following," and a feed of status updates. Ruby on Rails 2.3 Tutorial also teaches good software development practices, including version control with Git and GitHub, test-driven development with RSpec, and instant deployment with Heroku. Though of necessity the book focuses on a specific sample application, the emphasis throughout this book is on general principles, so you will have a solid foundation no matter what kind of web application you want to build.

An introduction to real-time apps with Rails 5

The Ruby on Rails 3 Tutorial and Reference Collection consists of two bestselling Rails In Ruby on Rails 3 Tutorial leading Rails developer Michael Hartl teaches Rails 3 by guiding you through the development of your own complete sample application using the latest techniques in Rails Web development. Drawing on his experience building RailsSpace, Insoshi, and other sophisticated Rails applications, Hartl illuminates all facets of design and implementation--including powerful new techniques that simplify and accelerate development. Hartl explains how each new technique solves a real-world problem and demonstrates this with bite-sized code that’s simple enough to understand, yet novel enough to be useful.The Rails 3 Way is the only comprehensive, authoritative guide to delivering production-quality code with Rails 3. Pioneering Rails expert Obie Fernandez and a team of leading experts illuminate the entire Rails 3 API, along with the idioms, design approaches, and libraries that make developing applications with Rails so powerful. You learn advanced Rails programming techniques that have been proven effective in day-to-day usage on dozens of production Rails systems. Dive deep into the Rails 3 codebase and discover why Rails is designed the way it is--and how to make it do what you want it to do.This collection helps you

Diplomarbeit aus dem Jahr 2008 im Fachbereich BWL - Wirtschaftspolitik, 1,7, Universität Leipzig, Deutsch, Rückblickend auf die letzten hundert Jahre lässt sich feststellen, dass im Zuge der Finanzmarktintegration und Globalisierung die Häufigkeit von Finanzkrisen deutlich zugenommen hat. Allein seit Beginn der 1980er Jahre wurden 166 Finanzkrisen dokumentiert. 84 dieser Krisen werden als „größere“ Finanzkrisen bezeichnet. Rund 30 davon begannen in den 1980er Jahren. In den 1990er Jahren waren es mit 50 Krisen hingegen schon fast doppelt so viele. Nach den jüngsten Krisen in Emerging Markets wie Mexiko 1994 / 95, Asien 1997 / 98, Russland 1998 und 1999 in Brasilien trifft es bei der Subprimekrise hauptsächlich die Industriestaaten. So sind vor allem die als Ausgangspunkt definierten United States of America (USA) und Europa von der aktuellen Immobilienkrise betroffen. Zahlreiche Banken und Investmenthäuser, sowohl in den USA als auch in Europa, stehen entweder vor dem Aus oder müssen Milliarden Abschreibungen aufgrund von Fehlspekulationen mit Mortgaged Backed Securities hinnehmen. Durch die sich kontinuierlich weiter zuspitzende Situation an den Finanzmärkten stehen nun seit einiger Zeit die Zentralbanken immer mehr im Mittelpunkt der Krisenbekämpfung, bei der es sich um keine leichte Aufgabe handelt. Besonders der Zuwachs an innovativen Finanzinstrumenten hat dafür gesorgt, dass Finanzmärkte zunehmend untransparenter werden. Auch wird eine Beurteilung der Marktsituation als Grundlage für geldpolitische Entscheidungen zunehmend komplexer und diffuser. Deutlich wird dies durch die von den Zentralbanken unterschiedlich eingeschätzten Risiken. Während die größte Sorge der US-amerikanischen Notenbank eine drohende Rezession ist, fürchtet die Europäische Zentralbank vielmehr die Gefahr der Inflation. Ebenso besteht die Angst vor einem drohenden Verlust der Glaubwürdigkeit von geldpolitischen Entscheidungsträgern, was somit für weitere Brisanz bei der Entscheidungsfindung sorgt. Zusätzlich wird durch die finanzielle Unterstützung der Zentralbanken und Institutionen für Opfer der Subprimekrise den Marktakteuren ein trügerisches Gefühl der Sicherheit gegeben. Sind aufgrund krisenbedingter Auswirkungen kurzfristige Eingriffe unumgänglich um die Finanzmärkte vor einem Kollaps zu bewahren, könnte gerade dieses Handeln den Investoren eine Expost Krisenversicherung vermitteln. Dadurch wäre ein eigennütziges, für die Gesellschaft schädliches Verhalten der Marktakteure denkbar.

All You Need to Know, and Nothing You Don't, to Create Ruby Programs, Gems, and Web Apps Programmers love Ruby for its elegance, power, and that's why it was chosen for the Ruby on Rails framework that launched websites from Shopify to Coinbase. You'll love Ruby too, but you don't need to learn "everything" about it, just how to use it efficiently to solve real problems. In Learn Enough Ruby to Be Dangerous , renowned instructor Michael Hartl teaches the concepts, skills, and approaches you need to be professionally productive in both general-purpose programming and beginning web app development. Even if you're new to programming, Hartl helps you quickly build technical sophistication and master the lore you need to succeed. You'll gain a solid understanding of object-oriented and functional programming, develop and publish a self-contained Ruby package (a gem), and use your gem to build and deploy a dynamic web app with the Sinatra framework. Focused exercises help you internalize what matters, without wasting time on details pros don't care about. Soon, it'll be like you were born knowing this stuff--and you'll be suddenly, seriously dangerous. Learn enough about . . . Writing real code quickly using interactive Ruby (irb) Working with native Ruby objects and creating your own Using functional techniques to write more concise and modular code Creating tests and improving code with test-driven development (TDD) Developing and publishing self-contained Ruby packages (gems) Writing nontrivial shell scripts to leverage Ruby's power at the command line Developing and deploying a web app with routes, layouts, embedded Ruby, and forms Mastering modern development skills you can use with any language Michael Hartl's Learn Enough Series includes books and video courses that focus on the most important parts of each subject, so you don't have to learn everything to get started--you just have to learn enough to be dangerous and solve technical problems yourself. Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details.

Python ist eine elegante und leistungsstarke Programmiersprache, die von Profis und Einsteigern gleichermaßen geschätzt wird und zu den populärsten Programmiersprachen weltweit zählt. Von Shell-Skripten über Webentwicklung bis hin zu Data Science, KI und Statistik Python hat vielseitige Anwendungsmöglichkeiten.Python mit Biss, ein Kurs des renommierten Dozenten Michael Hartl, vermittelt Ihnen das benötigte Wissen, um reale Probleme effizient lösen zu können. In diesem Kurs lernen Sie Python als Allzwecksprache kennen und entdecken gleichzeitig die Anwendung als Spezialwerkzeug für Webentwicklung und Data Science. Klare und leicht verständliche Erklärungen ermöglichen es, das Thema auch ohne Vorkenntnisse zu verinnerlichen. Dieser Titel ist insbesondere für Studierende aus den Sozialwissenschaften, Psychologie, Wirtschaftswissenschaften, Naturwissenschaften und der Medizin von großem Nutzen.