Higher-order Functions

Question 1

Define Higher-Order Functions

Answer 1

-Takes functions as arguments, returns a function as its result

Question 2

Define Map

Answer 2

Function is applied to every element

Question 3

Define Filter

Answer 3

Applies criteria to build new list

Question 4

Define Fold

Answer 4

(reduce)
Applies function to each value until single value
e.g. + all elements (starting at pos)