Practice What Is Functional Programming? (1) - Functional Programming in Java

Practice: What is Functional Programming?

Lesson 1Functional Programming in Java

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8 questions

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6 sample questions

Question 1.
What is a pure function?
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Think about functions that do not affect the outside environment.
Question 2.
What does immutability mean in programming?
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Consider a constant variable.
3Question 3.
What does it mean for a function to be pure?
- It affects global state
- It returns different outputs for the same inputs
- It has no side effects
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Consider the predictability of pure functions.
4Question 4.
True or False: Immutability allows data to be changed after it has been created.
- True
- False
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What happens to a constant after it’s declared?
Question 5.
Explain how improper use of side effects in functional programming can lead to challenges in a large codebase. Provide an example to illustrate your point.
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Think about data access from different parts of a large application.
Question 6.
Write a piece of code that exemplifies a pure function, then modify it to include a side effect. Explain the difference.
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Consider how the behavior of functions changes with external state alterations.

4 more questions in this section. Enroll free to practise them all.