15 lines
312 B
Erlang
15 lines
312 B
Erlang
-module(shop).
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-export([cost/1, total/1]).
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%% ShoppingList = [{oranges,4},{newspaper,1},{apples,10},{pears,6},{milk,3}]
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cost (oranges) -> 5;
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cost (newspaper) -> 8;
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cost (apples) -> 2;
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cost (pears) -> 9;
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cost (milk) -> 7.
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total([]) ->
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0;
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total([{Item, Count}|Rest]) ->
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cost(Item) * Count + total(Rest).
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