Lists

Lists

Lists are Haskell's fundamental data structure. All elements must have the same type.

let nums = [1, 2, 3, 4, 5]
let greets = ["hello", "world"]

Ranges

Use [a..b] to generate a range:

[1..5]    -- [1,2,3,4,5]
[2,4..10] -- [2,4,6,8,10]

Basic Functions

head [1,2,3]   -- 1
tail [1,2,3]   -- [2,3]
length [1,2,3] -- 3
null []        -- True
null [1]       -- False

Cons Operator (:)

: prepends an element to a list:

1 : [2, 3]    -- [1,2,3]
0 : [1..4]    -- [0,1,2,3,4]

Your Task

Create the list [1..10] and print:

1. Its length
2. Its head
3. Its last element using last