Set
Introduction
Section titled “Introduction”A Set is a collection of unique values — each value can only occur once. Sets can store any type (primitives and object references).
Learning Objectives
Section titled “Learning Objectives”- Create and manipulate Set collections
- Use Set for array deduplication
- Perform union, intersection, and difference operations
- Understand WeakSet for memory-safe tracking
Visual Summary
Section titled “Visual Summary”flowchart LR A["Input: [1, 2, 2, 3, 3, 3]"] B["new Set(input)"] C["Set {1, 2, 3}"]
A --> B --> CTopics Covered
Section titled “Topics Covered”| Topic | Description | Est. Time |
|---|---|---|
| Set Methods | add, has, delete, clear, size | 10 min |
| Set Operations | Union, intersection, difference | 15 min |
| WeakSet | Garbage-collectable Set | 10 min |
Prerequisites
Section titled “Prerequisites”- Arrays and their methods
- Basic understanding of collections
Learning Path
Section titled “Learning Path”Set Methods → Set Operations → WeakSet