Created
February 23, 2021 20:52
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Example of function guards
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defmodule Vat do | |
@moduledoc """ | |
Elixir In Action book example for function overloading | |
""" | |
def price(%{country: :germany, price: price}), do: calc_total_price(1.19, price) | |
def price(%{country: :greece, price: price}), do: calc_total_price(1.24, price) | |
def price(%{country: :croatia, price: price}), do: calc_total_price(1.25, price) | |
def price(unknown), do: {:unknown_country_data, unknown} | |
defp calc_total_price(vat, price) when vat > 1.20, do: "Expensive country: " <> "#{vat * price}" | |
defp calc_total_price(vat, price), do: vat * price | |
end |
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