Module 1 · Collection Basics

011. Lists, Sets and Maps at a GlanceLESSON

—2. Read-only and Mutable CollectionsLOCKED

—3. Sets, Maps and EqualityLOCKED

Module 2 · Searching and Filtering

—4. Accessing Elements SafelyLOCKED

—5. Filtering and CheckingLOCKED

Module 3 · Transforming and Aggregating

—6. Transforming: map, flatMap and associateLOCKED

—7. Grouping and AggregatingLOCKED

—8. Fold and ReduceLOCKED

Module 4 · Sequences and Practice

—9. Sequences: Lazy Instead of EagerLOCKED

—10. Mini Project: Analyzing Stock LevelsLOCKED

10 lessonsModule 1 · Collection BasicsModule 2 · Searching and FilteringModule 3 · Transforming and AggregatingModule 4 · Sequences and PracticeProgress: local, no account required