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5m

__FILE__, __dir__, and Symlinks

Aug 05, 2024 Pro

Ruby's __FILE__ and __dir__ work slightly differently with symlinks that you might not realize. Let's check see how it works.

0
18m

Parsing Markdown Code Line Highlighting with Ruby

Dec 09, 2024 Pro

We needed a feature to highlight lines in Markdown code blocks for the Rails guides. This is a fun Ruby challenge with many different solutions.

2
11m

Frozen String Literals in Ruby 3.4

Dec 16, 2024 Pro

Ruby 3.4 now raises warnings anytime you mutate a string literal. Learn how to fix our code and use frozen string literals to improve performance.

1
7m

Hash Fetch with Default Value

Jan 27, 2025 Pro

In this screencast, we explore Ruby's Hash#fetch method and how it handles default values. We show how providing a direct default value vs a block affects performance, especially important in Rails apps where unnecessary operations can impact speed.

6
12m

Lazy Requiring Dependencies in Ruby

Feb 03, 2025 Pro

Normally, we require dependencies at the top of files, but today we'll see where and when we might want to lazily require dependencies.

8
11m

Ruby's Tap Method

Jan 05, 2026 Pro

The tap method in Ruby feels strange at first, but is one of my favorite tools for writing clean code. It can help eliminate local variables and make chaining things together super easy.

6
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