Unique Items with Set
Track membership without duplicates.
Track Uniqueness
When you only care whether something is present, not how many times, use a Set. It holds each item once. ✨
One Element Type
A Set takes a single element type in brackets, like Set[Int]. Every member shares that type.
var ids = Set[Int]()All lessons in this course
- Building and Growing a List
- Key-Value Data with Dict
- Unique Items with Set
- Choosing the Right Collection