Assignment: Consider a shopping list that looks like [{item quantity price}, ...]. Write a list comprehension that builds a list of items of the form [{item total_price}, ...], where total_price is quantity times price.

Bill.erl

[{"Beer", 2.50, 8}, {"Snacks", 1.99, 4}]

total_price.erl

-module(total_price).
-export([calc_bill/1]).

%Assignment: Consider a shopping list that looks like [{item quantity price}, ...]. Write a list comprehension that builds a list of items of the form [{item total_price}, ...], where total_price is quantity times price.
% Using a pipe, go through each part of the list and do the calculation. Then return this.
calc_bill(Bill) ->
    [{Item, Quantity * Price} || {Item, Quantity, Price} <- Bill].