11-functors-applicative-functors-and-monoids.hs

import Control.Applicative
import Data.Monoid

-- We can use the following type to simulate our own list
data List a = Empty | Value a (List a) deriving (Show)

-- Make the list a Functor

-- Write a function which appends one list on to another
combineLists:: List a -> List a -> List a
combineLists a b = undefined

-- Make our list a Monoid

-- Make our list an Applicative

-- Make sure that the List obeys the laws for Applicative and Monoid

-- Create some lists of numbers of different lengths such as:
twoValueList = Value 10 $ Value 20 Empty

-- Use <$> on the lists with a single-parameter function, such as:
plusTwo = (+2)

-- Use <$> and <*> on the lists with a binary function

-- Create some lists of binary functions

-- Use <*> on the binary functions list and the number lists