Latest Screencasts

This video goes over some issues that popped up while upgrading a Rails 3 application to the Release Candidate. Watch this screencast

Quick Ruby Tip: The inject method is useful for aggregating data across a dataset. For example a summation could be done with inject (by aggregating each number into the sum.) Watch this screencast

The second part of the tutorial for building a blog with Ruby on Rails version 3. We demonstrate how to set up some basic routes, manage the controller and views, and create a basic form for creating posts. Watch this screencast

Every good project needs a good setup. In this episode, I set up a github repo, create a new rails application, hook in Cucumber and Rspec, write a Cucumber feature, and write the code to make it pass. Watch this screencast

RSpec gives us many powerful tools to make our tests readable. Matchers allow us to provide custom predicates to our should statements that succinctly define the behavior of our code. Watch this screencast

This is an introduction to Ruby metaprogramming where I cover two different ways to define a method. The idea actually started as a joke, but there are valuable lessons to be learned here. Watch this screencast

Shoulda is a framework that sits on top of Test::Unit and adds a ton of nice features like macro's, nested context, and the ability to create custom tests in a block-based DSL. Watch this screencast

RSpec provides an extremely concise way of representing simple tests to be called on new instances of a class or on explicitly defined receiver objects. You can do this by using 'subjects' either as defined by the 'describe' or the 'subject' methods. Watch this screencast

Maintainability of your code can be measured in many different ways. Jake Scruggs has combined several of the tools that measure you code into one Ruby Gem: metric_fu. Here's a demonstration. Go check it out! Watch this screencast

Ruby uses special characters to define certain data types. If you wish to use these characters in your data types, you need to escape them or use percent functions. Percent functions are much simpler. Watch this screencast