Ruby Language

Sometimes you might want to keep track of all classes a module was included in. We can do that with a couple nifty tricks to make this work with both regular Ruby modules and Rails concerns.

10 minutes

Symbols vs Strings

#284 · Feb 14, 2019

Ever wondered what the difference between Symbols and Strings were? Why would we use one over the other when most languages only have strings?

8 minutes

Sometimes you may need to wrap and reraise an exception. Ruby 2.1+ makes this easy by letting us raise a new error, pass in the old one, and automatically assigns the exceptions "cause" which is the original exception.

8 minutes

How to use "ensure" in Ruby

#438 · Mar 14, 2022 Pro

Using ensure with blocks is extremely helpful for cleaning up things. We'll learn how to use ensure in Ruby for cleaning up open files as well as temporarily changing values for requests or test stubs.

19 minutes

Flattening Scopes in Ruby

#440 · Apr 05, 2022

In this video, we will look at how to use blocks and bindings in Ruby to pass local variables across different scopes.

23 minutes

Concept Application: Assert Difference Deep Dive

#443 · Apr 25, 2022

In this video, we will explore how the concepts we looked at in "Flattening Scopes in Ruby" are used in Rails by taking a look at the assert_difference method. We will walk through how the method works while taking note of where the concepts are applied.

15 minutes

Eigenclasses

#448 · May 30, 2022 Pro

In this episode, we will be looking into Ruby's eigenclasses or singleton classes. We will first look at singleton methods and then how we can access the eigenclasses of objects.

21 minutes

Your First Ruby Gem

#465 · Oct 24, 2022

In this episode, we will create our first Ruby Gem. It will be a very simplified gem that adds a method to the built-in Ruby Array class. The goal is to understand the core pieces of what is needed to create a gem that we can share with the community.

24 minutes

Your First Ruby Gem Part 2

#467 · Nov 07, 2022

In this follow-up episode on building your first Ruby gem, we look at setting up version control, adding a basic testing setup, and adding a basic GitHub action for a CI (continuous integration) setup. With these pieces in place, we should have a solid fo

21 minutes

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Videos

How to use the Ruby 2.6 Just-in-Time (JIT) Compiler

#278 · Dec 28, 2018

Ruby's Array() and Array.wrap

#305 · Jul 30, 2019

Ruby Module Include Tracking

#341 · Apr 19, 2020 Pro

Symbols vs Strings

#284 · Feb 14, 2019

Wrapping Exceptions in Ruby

#390 · Mar 31, 2021 Pro

How to use "ensure" in Ruby

#438 · Mar 14, 2022 Pro

Flattening Scopes in Ruby

#440 · Apr 05, 2022

Concept Application: Assert Difference Deep Dive

#443 · Apr 25, 2022

Eigenclasses

#448 · May 30, 2022 Pro

Your First Ruby Gem

#465 · Oct 24, 2022

Your First Ruby Gem Part 2

#467 · Nov 07, 2022

Building Utilities with Ruby Scripts

#473 · Dec 19, 2022

Debugging with Caller

#472 · Dec 12, 2022

The Ruby Subscript Operator

#476 · Jan 09, 2023 Pro

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