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Boutique Inventory - Elixir - Exercism
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defmodule BoutiqueInventory do | |
def sort_by_price(inventory) do | |
inventory | |
|> Enum.sort_by(&(&1.price)) | |
end | |
def with_missing_price(inventory) do | |
inventory | |
|> Enum.filter(&is_nil(&1.price)) | |
end | |
def update_names(inventory, old_word, new_word) do | |
inventory | |
|> Enum.map(&replace_word(&1, old_word, new_word)) | |
end | |
defp replace_word(map, old_word, new_word) do | |
name = String.replace(map.name, old_word, new_word) | |
Map.put(map, :name, name) | |
end | |
def increase_quantity(item, count) do | |
qbs = Map.new(item.quantity_by_size, fn {k, v} -> {k, v + count} end) | |
%{item | quantity_by_size: qbs } | |
end | |
def total_quantity(item) do | |
item.quantity_by_size | |
|> Enum.reduce(0, fn {_, v}, sum -> sum + v end) | |
end | |
end |
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