Lists

import IEx.Helpers

Idiomatic Elixir

• sequential (enumerable)
• like datatypes
• acceptable for short or long
• access head first

Syntax

list = [1, 2, 3]

[1, 2, 3]

[19, 0 | list]
# | -> list append operator

[19, 0, 1, 2, 3]

Match

[head | tail] = list

[1, 2, 3]

head

1

tail

[2, 3]

[one, two | rest] = [1, 2]
{one, two, rest}

{1, 2, []}

{[first | _], _, _} = {[1, 2, 3], 4, 5}

{[1, 2, 3], 4, 5}

first

1