AQA A Level Computer Science (7517)

4.12: Fundamentals of Functional Programming: revision quiz and key terms

Free practice for 4.12: Fundamentals of Functional Programming in AQA A Level Computer Science (7517). It has 7 parts, listed below. Try the questions, then check the key terms.

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Question 1 · Multiple choice

What is the tail of the list [4, 7, 9]?

Question 2 · True or false?

Partial function application means supplying only some of a function's arguments, producing a new function as a result.

Question 3 · Multiple choice

Which higher-order function applies a given function to every element of a list and returns a list of the results?

Question 4 · True or false?

In the composition g ∘ f, g is applied first.

Question 5 · Multiple choice

If f(x) = x + 1 and g(x) = 2x, what is (g ∘ f)(3)?

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Key terms for 4.12: Fundamentals of Functional Programming

Empty list: A list containing no elements at all.
Filter: A higher-order function that returns the elements of a list that satisfy a condition.
First-class object: An object that can be passed as an argument, returned from a function and assigned to a variable.
Head: The first element of a list.
Higher-order function: A function that takes a function as an argument or returns a function as its result.
Map: A higher-order function that applies a function to every element of a list.
Reduce (or fold): Reduces a list of values to a single value by repeatedly applying a combining function.
Tail: The list that remains after the first element has been removed.

What 4.12: Fundamentals of Functional Programming covers

In RADevo this topic has a full topic test and a focused quiz for each part:

4.12.1.1 Function Type
4.12.1.2 First-Class Object
4.12.1.3 Function Application
4.12.1.4 Partial Function Application
4.12.1.5 Composition of Functions
4.12.2.1 Functional Language Programs
4.12.3.1 List Processing

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