optics #8
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The tutorial covers: 1. Basic Lenses for product types 2. Prisms for sum types 3. Optionals for optional values 4. Traversals for collections 5. Real-world example combining all concepts
Added TODO comments and placeholders for students to complete: 1. Basic lens creation and composition exercises 2. Prism implementation for sum types 3. Optional composition for safe navigation 4. Traversal creation with filtering 5. Complex real-world example with bonus exercise Each exercise includes: - Clear instructions and hints - Test cases to verify solutions - Increasingly complex challenges
- Added @main annotation - Used section and exercise from exercise_tools - Replaced implemented code with |>? placeholders - Improved section naming to match other tutorials - Removed hints to make it more challenging - Kept check statements for verification - Structured exercises consistently with other files
1. Fixed traversal filter using proper filter method 2. Fixed prism construction in bonus exercise 3. Updated imports to use * for Scala 3 style
1. Fixed engineering salary raise by moving filter to departments level 2. Added proper decimal rounding for total calculation
- Replaced implemented code with ?? placeholders - Fixed total calculation to include quantities
Optics and monads
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Provide monads exercises