Your First Ruby Gem

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.

IMPORTANT NOTE: If you are planning to build along with the video and publish the gem, you will need to use a different gem name as parity_prop is already published to RubyGems. In such a small gem this is a pretty simple task, simple rename every call to parity_prop within the code/ file structure to the gem name that you have chosen as a replacement. This illustrates a good initial step to take before starting to work on your gem, think of a name for your project and make sure that it is available on RubyGems.

[cherryramatis]

kylo ren teaching ruby is absolutely amazing

[sushispicelatte]

Thanks! It's great that you did not take any shortcuts and built it from scratch! Helps us learn and understand better.

[urbnctrl]

Thanks for this video man! Appreciate it. And.. I do have to say, I loved you in The Last Jedi!

[diegolinharesrb]

Nice!
Could you do one explaining how to use zeitwerk and also adding types (sorbert + tapioca)?

[benkiarie]

It is also worth mentioning if you intend to publish this gem to Ruby Gems you should change the name of your gem. If you try to create a gem called parity_prop, you cannot push it to Ruby Gems because there is one that already exists in the Ruby Gems repository.

[RyanSandridge]

Nice documentation pop-up in your irb session. I'm presuming that functionality is a gem itself. What is it, or how can I get the same functionality?

[kieranklaassen]

Nice! I personally always use `bundle gem GEMNAME` to create the barebones Gem structure. Many options can be passed:

[kgjcitm]

how terminal show the defination in irb ... I want to know that thing which happened in this video at 11:26 .. please reply on my comment