You are running an online fashion boutique. Black Friday is coming up, so you need to take stock of your inventory to make sure you're ready.
A single item in the inventory is represented by a map/dictionary, and the whole inventory is a list/array of such maps/dictionaries.
%{
name: "White Shirt",
price: 40,
quantity_by_size: %{s: 3, m: 7, l: 8, xl: 4}
}