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dav11d/consolidator.ex

Created September 21, 2017 13:24
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consolidator.ex
def atc([], new_item) do
[new_item]
end
def atc([h = %{product_id: id, size: size, quantity: old_quantity}|t], %{product_id: id, quantity: growth, size: size}) do
[%{h | quantity: old_quantity + growth}|t]
end
def atc([h|t], new_item) do
[h|atc(t, new_item)]
end
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