4.3.1. Definition

Try these first

1. 1.

   Define a pure function in your own words.

   Hint

   Think about functions in mathematics.

2. 2.

   What does immutability refer to in programming?

   Hint

   Consider if a variable can be modified.

3. 3.

   What is a characteristic of pure functions?

   • A. They cause side effects.
   • B. They always return the same result for the same inputs.
   • C. They require mutable data.

   Hint

   Consider what makes a function predictable.

4. 4.

   True or False: Functional programming allows for mutable states.

   • True
   • False

   Hint

   Think about the design philosophy of functional programming.

5. 5.

   Explain how functional programming paradigms can enhance the reliability of concurrent systems in software development.

   Hint

   Think about why shared state is problematic in concurrent programming.

6. 6.

   Create a simple Haskell function that demonstrates recursion and ensure it adheres to pure function principles.

   Hint

   Recall the mathematical definition of factorial.