Learn how to harness the power of Ruby's modules to organize your code, promote reuse, and improve maintainability. Discover the benefits of using modules, how to create and use them, and best practices for effective module design.

Mastering two essential techniques in debugging Python code, this topic covers using the `pdb` module and logging for error tracking. By implementing these methods, developers can identify and fix errors more efficiently, reducing debugging time and improving code quality. Key takeaways include using `pdb` to step through code line by line and leveraging the `logging` module to track events and potential errors.

Learn how to create integration tests for a multi-component application using a testing framework, with a focus on setting up a testing environment, writing integration tests, mocking dependencies, and running tests using Jest. Explore integration testing principles and practices through a real-world scenario, featuring a sample e-commerce application with three interconnected components.