programming-elixir-ch3-cons.ex

list = [1, 2, 3]

# Build a list - using the cons operator on the right hand side of an expression
add_to_list = [ 4 | list ] # This results in a new list with value [4, 1, 2, 3]

# Destructuring a list - using the cons operator on the left hand side of an expression

[ head | tail ] = list
IO.puts head # head is bound to the value 1
IO.puts tail # tail is bound to the value [2, 3]

# Note there is no change to the original list - it's still bound to the value [1, 2, 3]