The Wayback Machine - http://web.archive.org/web/20160904132006/http://ruby.about.com:80/od/advancedruby/

Advanced Ruby

These pages deal with some of the more advanced concepts of Ruby and are geared toward intermediate and advanced programmers. The covered concepts will build upon the more basic features of Ruby, a discussion of which can be found in Beginning Ruby.
Ruby
5 Subcategories in Advanced Ruby
15 Articles in: Advanced Ruby
What is Tainted Data?
In large programs, especially when heavy abstraction is involved, it's sometimes impossible to tell where your data is coming from. Consider the following situation: a server application takes user input from a client and does some processing. It then offloads some of this processing (for example, resizing an image file) to an external program using the backtick operator. The command passed to the operating system is partially comprised of input from the client, which cannot be trusted. A p
Making Deep Copies in Ruby
It's often necessary to make a copy of a value in Ruby. While this may seem simple, and it is for simple objects, as soon as you have to make a copy of a data structure with multiple array or hashes on the same object, you will quickly find there are many pitfalls.
Cloud computing desk - John Lamb/Digital Vision/Getty Images
How to Use OptionParser: Ruby's Powerful Parsing Tool
Ruby comes equipped with a powerful and flexible tool to parse command-line options, OptionParser. The class is an alternative to GetoptLong for analyzing command line options.
A businessman with a notebook - TongRo Images/TongRo Images/Getty Images
How to Use 'OptionParser' for Command Parsing (Ruby)
Using OptionParser to parse command line options is a preferable alternative to GetoptLong or looking through ARGV manually. But how do you use it?
Writing Domain Specific Languages
A short guide on writing Domain Specific Languages in Ruby.
RubyQuiz
Challenges to test your Ruby programming skills.
Ruby @ PLEAC
Ruby recipes at PLEAC (Programming Language Examples Alike Cookbook), the example programs from the Perl Cookbook re-written in Ruby.
21 Ruby Tricks
A few tips and tricks to make things a little easier.
Creating and Distributing Gems with Bundler
Creating Ruby gems has always been a bit of a pain. When you get right down to it, it's not a hard thing to do, but it's easy to forget how if you don't do it often enough. There are quite a few gems to help you write other gems, but if you're using Rails 3, there's already a gem on your system that does this: Bundler.
Ruby Core
Information on installing, running and contributing to the development of the latest release of Ruby.
How to Install Gems from Git Repositories in Ruby
How to install gems from git repositories.
Garbage Collection
Garbage collection is the process of freeing unused objects. It's a hallmark of many high level languages, including Ruby.
Thread Pools in Ruby
Thread pools are a common pattern in many programs: the need to run M tasks, but only wish to run N of them in parallel at a time.
Assigning Keyword Arguments from the Constructor in Ruby
A common Python idiom of assigning instance variables from keyword arguments is examined.
Ruby Regular Expression Tips: Quick Extraction
Regular expressions are a powerful and often cryptic feature for processing text. Ruby provides a quick way to handle this often cumbersome tool and extract a specific part of a string.
View More