What are some examples of collection patterns in programming?

What are some examples of collection patterns in programming?

Collection patterns are design patterns that deal with how to manage and organize groups of objects. Examples include the Iterator, Composite, and Observer patterns.

Can you explain the Iterator pattern?

Sure! The Iterator pattern allows sequential access to elements in a collection without exposing the underlying structure. It provides a way to traverse a collection without needing to know its details.

What about the Composite pattern?

The Composite pattern lets you compose objects into tree structures to represent part-whole hierarchies. It allows clients to treat individual objects and compositions uniformly.

How does the Observer pattern work?

The Observer pattern defines a one-to-many dependency between objects, so when one object changes state, all its dependents are notified and updated automatically.