Question
When should a Java developer choose map, flatMap, and reduce deliberately?
- Choose map, flatMap, and reduce mainly when you want to postpone validation and fix problems manually later.
- Choose map, flatMap, and reduce whenever you want the code to look more advanced, even if the design gets less clear.
- Choose map, flatMap, and reduce only to avoid modeling domain rules explicitly in Java code.
- Use these operations when the business logic reads naturally as a data pipeline instead of an imperative loop.
Hint
Think about the production scenario where the choice genuinely improves the code.
Answer and rationale
Correct answer: D. Use these operations when the business logic reads naturally as a data pipeline instead of an imperative loop.
Use these operations when the business logic reads naturally as a data pipeline instead of an imperative loop. Interviewers often ask this to see whether you can connect the concept to real design decisions.
Track: Java