Writing functional programs

Question 1

What does the map function do?

Answer 1

It is a high order function that applies a given function to each item in a list

Question 2

What does the filter function do?

Answer 2

It is a high order function that produces a new list containing all items from the input list that meet a given condition

Question 3

What does the fold function do?

Answer 3

It is a high order function that reduces a list to a single value by repeatedly applying a combining function

Question 4

What is the result of head([1,2,3,4])?

Answer 4

1

Question 5

What is the result of tail([1,2,3,4])?

Answer 5

[2,3,4]