When should I use Composite design pattern?

When you need to represent a complex tree-like structure.
When you want to apply a behavior to multiple objects at once.
When you want to hide the implementation details of a class.
When you want to implement a cache for your data.

The Composite design pattern is used to represent a tree-like structure, where each node in the tree can be either a leaf node or a composite node. The leaf nodes represent the individual objects, while the composite nodes represent the composition of objects. The Composite pattern allows you to treat both composite and leaf objects in a uniform manner, making it easier to manage complex structures.

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