4.12 Fundamentals of Functional Programming

Question 1

What is a function

Answer 1

a rule for each element in some set A of inputs, assigns an output chosen from set B, but without necessarily using every member

Question 2

How does a function work

Answer 2

An argument is passed to a function, the rule is applied to the argument, creating the return value output

Question 3

What is a higher-order function

Answer 3

a function that takes a function as an argument and returns a function as a result