Conventions in This Book in Java

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113 Conventions in This Book
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The conventions in this book are mostly self-explanatory; in this section, I ll mention some that may not be First, both the HTML and PDF editions of this book are full of
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1: From Zero to Deploy
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links, both to internal sections (such as Section 12) and to external sites (such as the main Ruby on Rails download page)5 Second, your humble author is a Linux/OS X kind of guy, and hasn t used Windows as his primary OS for more than a decade; as a result, Rails Tutorial has an unmistakable Unix flavor6 For example, in this book all command line examples use a Unix-style command line prompt (a dollar sign):
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$ echo "hello, world" hello, world
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Rails comes with lots of commands that can be run at the command line For example, in Section 125 we ll run a local development web server as follows:
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$ rails server
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Rails Tutorial will also use Unix-style forward slashes as directory separators; my Rails Tutorial sample app, for instance, lives in
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/Users/mhartl/rails_projects/first_app
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The root directory for any given app is known as the Rails root, and henceforth all directories will be relative to this directory For example, the config directory of my sample application is in
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/Users/mhartl/rails_projects/first_app/config
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This means that when referring to the file
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/Users/mhartl/rails_projects/first_app/config/routesrb
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I ll omit the Rails root and write config/routesrb for brevity
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5 When reading Rails Tutorial, you may find it convenient to follow an internal section link to look at the reference and then immediately go back to where you were before This is easy when reading the book as a web page, since you can just use the Back button of your browser, but both Adobe Reader and OS X s Preview allow you to do this with the PDF as well In Reader, you can right-click on the document and select Previous View to go back In Preview, use the Go menu: Go > Back 6 Indeed, the entire Rails community has this flavor In a full room at RailsConf you ll see a handful of PCs in a sea of MacBooks with probably half the PCs running Linux You can certainly develop Rails apps on Microsoft Windows, but you ll definitely be in the minority
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Up and Running
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Finally, Rails Tutorial often shows output from various programs (shell commands, version control status, Ruby programs, etc) Because of the innumerable small differences between different computer systems, the output you see may not always agree exactly with what is shown in the text, but this is not cause for concern In addition, some commands may produce errors depending on your system; rather than attempt the Sisyphean task of documenting all such errors in this tutorial, I will delegate to the Google the error message algorithm, which among other things is good practice for real-life software development
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12 Up and Running
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It s time now to get going with a Ruby on Rails development environment and our first application There is quite a bit of overhead here, especially if you don t have extensive programming experience, so don t get discouraged if it takes a while to get started It s not just you; every developer goes through it (often more than once), but rest assured that the effort will be richly rewarded
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121 Development Environments
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Considering various idiosyncratic customizations, there are probably as many development environments as there are Rails programmers, but there are at least two broad themes: text editor/command line environments, and integrated development environments (IDEs) Let s consider the latter first
IDEs There is no shortage of Rails IDEs; indeed, the main Ruby on Rails site names four: RadRails, RubyMine, 3rd Rail, and NetBeans All are cross-platform, and I ve heard good things about several of them I encourage you to try them and see if they work for you, but I have a confession to make: I have never found an IDE that met all my Rails development needs and for some projects I haven t even been able to get them to work at all Text Editors and Command Lines What are we to use to develop Rails apps, if not some awesome all-in-one IDE I d guess the majority of Rails developers opt for the same solution I ve chosen: use a text editor to edit text, and a command line to issue commands (Figure 11) Which combination you use depends on your tastes and your platform: