By Peter Cooper
Ruby could be most sensible often called the engine powering the highly well known Ruby on Rails net framework. even if, it really is a very robust and flexible programming language in its personal correct. It specializes in simplicity and provides an absolutely object-oriented environment.
Beginning Ruby is a completely modern consultant for all sorts of reader desirous to research Ruby, from amateur programmers to net builders to Ruby novices. It starts off through explaining the rules at the back of object-oriented programming and inside of a number of chapters builds towards making a real Ruby application.
The ebook then explains key Ruby rules, resembling periods and gadgets; tasks, modules, and libraries; and different facets of Ruby resembling database entry. additionally, Ruby on Rails is roofed extensive, and the books appendixes offer crucial reference info in addition to a primer for knowledgeable programmers.
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Additional resources for Beginning Ruby. From Novice to Pro
Others require that you install directly from source or install a package manager beforehand. rpm • Gentoo: Use emerge as follows: emerge ruby • Debian: Use apt-get: sudo apt-get install ruby • Ubuntu: Use apt-get as with Debian. You might also need to install irb explicitly. 8-dev rdoc ri irb If one of these methods works for you, try to run Ruby and irb as shown in the preceding section, and progress to Chapter 2 if you’re ready. Alternatively, you can search your distribution’s package repository for Ruby, as the name for the Ruby package in your distribution might be nonstandard or changing over time.
This can take a little while to get used to at first, but for new programmers it makes Ruby even easier to learn. ” example, but you should still be able to take a good guess at what it does. First, it tells the computer you want to work with a concept called User. Next, it tries to find a user with a specified e-mail address. Last, it takes the user’s country information and changes it to Belgium. Don’t worry about how the data is stored for users at this point; that comes later. ” By the end of this chapter you’ll see how you can create your own real-life concepts in Ruby and operate upon them in a similar way to this example.
I’ll see you in Chapter 1. qxd 1/10/07 7:51 PM PART Page 1 1 Foundations and Scaffolding This section is where the foundations of your Ruby knowledge will be laid. By the end of this section you’ll be able to develop a complete, though basic, Ruby program. You’ll learn how to get Ruby working, what object orientation is, how to develop some basic programs, and about the data types and control structures Ruby uses and can operate on. Finally, I’ll walk you through creating a small program from start to finish.