include vs extend in Ruby: Clear Rules, Real Patterns
Understand exactly how include and extend work in Ruby, with method lookup rules, common mistakes, and production patterns.
Ruby
Ruby Method Arguments: Positional, Keyword, and Variable Arguments
Complete guide to Ruby method arguments — positional parameters, default values, variable args with splat, keyword arguments, forwardable args, and common pitfalls.
Testing in Ruby: A Practical Guide from Unit Tests to CI
A practical Ruby testing guide covering test layers, RSpec patterns, mocking strategies, system tests, and CI workflows.