juniorScala
What are Scala collections?
Updated May 24, 2026
Short answer
Collections are data structures like lists, sets, and maps.
Deep explanation
Scala provides both mutable and immutable collections with rich functional APIs.
Real-world example
Used in data transformations.
Common mistakes
- Using mutable collections unnecessarily.
Follow-up questions
- Difference between List and Vector?
- Are collections lazy?