Fashion Boutique

Story

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}
}

Tasks

• Sort items by price
• Find all items with missing prices
• Increment the item's quantity
• Calculate the item's total quantity

Implementations

• Elixir: enum (reference implementation)
• Elixir: list-comprehensions (adapted for further use in following exercise)

Reference

• types/array
• types/dictionary
• types/list
• types/map