Bank Account: Your First Real Class

What you'll be able to build

Model a bank account that deposits, withdraws, and refuses to overdraw. The object-oriented foundation under every app you will build. Along the way you pick up real, transferable Ruby skills, not just this one project:

• defining a class with initialize
• attr_reader and instance variables
• instance methods that mutate state
• raising and rescuing exceptions
• guard clauses for invalid input
• to_s for readable objects

A course like this one

Yours is built from your own placement, so module count and depth will differ. This map shows what a beginner-level Ruby learner building Bank Account actually gets.

1. Module 1: Values, strings, and puts6 lessons

   Builds the script for your bank account.

2. Module 2: Collections: arrays, hashes, and Enumerable6 lessons

   Builds the module workflow for your bank account.

3. Module 3: Control flow, truthiness, and predicting output6 lessons

   Builds the method that powers your bank account.

4. Module 4: Methods, blocks, and reading errors6 lessons

   Builds the reusable class for your bank account.

5. Module 5: Classes, modules, and program design6 lessons

   Builds the collection pipeline for your bank account.

6. Module 6: Shipping a reusable Ruby tool3 lessons

   Builds the command-line tool for your bank account.

Common questions