Flattening Nested Data

Deeply nested JSON can be hard to work with. Learn techniques to flatten complex structures into more usable formats.

Basic Flattening

Flattening One-to-Many

Using flatMap()

Recursive Flattening

Creating Paths

Exercise: Flatten Orders

Exercise: Pull Up Properties

Key Points

• Use flatMap() for one-to-many flattening
• Pull nested properties to top level
• Use recursion for tree structures
• Create dot-notation paths for configs
• Keep transformed data easy to work with