Inventory Manager: Mixins in Action
Build an inventory of items that sort and compare themselves by including Ruby's own modules. The duck-typing power that makes Ruby feel magic.
What you'll be able to build
Build an inventory of items that sort and compare themselves by including Ruby's own modules. The duck-typing power that makes Ruby feel magic. Along the way you pick up real, transferable Ruby skills, not just this one project:
- classes with attr_accessor
- including Comparable and the spaceship operator
- including Enumerable and each
- Struct for lightweight records
- sorting custom objects
- modules as mixins
A course like this one
Yours is built from your own placement, so module count and depth will differ. This map shows what a intermediate-level Ruby learner building Inventory Manager actually gets.
- Module 1: Values, strings, and puts5 lessons
Builds the script for your inventory manager.
- Module 2: Collections: arrays, hashes, and Enumerable5 lessons
Builds the module workflow for your inventory manager.
- Module 3: Control flow, truthiness, and predicting output5 lessons
Builds the method that powers your inventory manager.
- Module 4: Methods, blocks, and reading errors5 lessons
Builds the reusable class for your inventory manager.
- Module 5: Classes, modules, and program design5 lessons
Builds the collection pipeline for your inventory manager.
- Module 6: Shipping a reusable Ruby tool3 lessons
Builds the command-line tool for your inventory manager.
How the lessons actually work
Every lesson has you predict what a piece of Ruby code will output before you run it, then run it for real in your browser and fix what you got wrong. Each module ends in a challenge gate with hidden tests, so you can't advance until your code actually works. The course closes with a capstone that assembles everything into Inventory Manager, and a runnable proof page tied to your own code.
Common questions
How long does the Inventory Manager: Mixins in Action course take?
about 7 hours, across 6 modules and 28 lessons, at roughly 15 minutes per lesson. Your own course may run shorter or longer, since it's sized to your placement result, not a fixed template.
Do I need experience?
Some. This is an intermediate-tier Ruby project, so it assumes you're comfortable with Ruby basics and pushes past them.
How much does it cost?
$15 one-time, no subscription. The first module is free, so you can see exactly how the course teaches before you pay for the rest.