Refactoring and code quality

What you'll learn

1. 1

   Imagine you have a messy wardrobe 🧥👗👟. Refactoring is like tidying it up — you don't throw anything away, you just organise it so you can find things faster.

2. 2

   What does refactoring do to your code?

3. 3

   Here's a messy bit of code. Drag the lines into a better order to group related things together.

4. 4

   Let's refactor this code together — it calculates the total cost of items in a basket.

5. 5

   Now you try — rename this variable to something clearer: oldName = 'Alice'

6. 6

   Why is 'user_name' better than 'x' for storing a person's name?

7. 7

   True or false: Refactoring can introduce new bugs if you're not careful.