A Guide to the Ruby CSV Library, Part I
Several weeks ago I needed to do something in Ruby that involved processing a large number of CSV files. I was happy to learn there was a good, comprehensive CSV library to make my job easier. One...
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Good job, son! – Uncle Bob (if you’re confused who Uncle Bob is you might want to read Part 1 of this tutorial) Uncle Bob is happy with the work we’ve done so far. But there’s one thing left… What we...
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Watir-Webdriver: Control the Browser
Watir-WebDriver (Watir is short for Web Application Testing in Ruby) is a Ruby gem which allows you to automate your browser (make it click a button, submit a form, wait for some text to appear before...
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Ruby Error Handling, Beyond the Basics
Imagine you're riding a bike. Now, imagine the designers of that bike built it so it rides smoothly only on roads without bumps and encountering one would result in the entire bicycle breaking! You...
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Nokogiri Fundamentals: Extract HTML from the Web
Most people get very confused when they try to learn Nokogiri without mastering some fundamentals first. There is a reason for this. Trying to learn Nokogiri without learning the things that make it...
View ArticleModel Web Pages with the Page Object Pattern
We interact with web pages every day. On the low level, clicking on various HTML elements or entering text in text forms using input devices. What's the higher-level purpose of doing those things? It's...
View ArticleUnderstanding Scope in Ruby
Scope is an essential thing to understand, not just in Ruby, but in any programming language. Back in the days when I was starting to write Ruby, more than half of the errors thrown at me were as a...
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