Tutorial series

Intermediate Ruby

5 tutorials — follow in order for the best learning path.

1. Working with Procs and Lambdas: A Ruby Tutorial

   Learn how to work with procs and lambdas in Ruby: how to create them, how arity and return differ between the two, and when to choose each in real code.

   12 min read · intermediate
2. Ruby Enumerable: map, filter, and aggregate collections

   Learn how the Ruby Enumerable module helps you map, filter, search, group, and aggregate collections with practical examples.

   15 min read · intermediate
3. The Comparable Module in Ruby: Sorting and Comparison Made Simple

   Learn how to use Ruby Comparable module to add sorting and comparison methods to your classes with the spaceship operator, including multi-criteria ordering.

   10 min read · intermediate
4. Working with Ruby symbols vs strings: when to use each

   Learn how working with Ruby symbols vs strings affects memory and performance, and when to use each type for hash keys, method names, and user input in Ruby.

   12 min read · intermediate
5. Testing RSpec in Ruby: Practical BDD Tutorial

   Hands-on tutorial for testing RSpec in Ruby. Covers describe blocks, matchers, hooks, let, mocking, and the testing workflow you can reuse in real projects.

   12 min read · intermediate