Haskell Code Haskell Code Haskell Code

Problem Description and Initial Design Wally World Marketplace (WWM) is a "big box" store selling groceries, dry goods, hardware, electronics, etc. In this project, we develop part of a point-of-purchase (POP) system for WWM. The barcode scanner at a WWM POP-i.e. checkout counter-generates a list of barcodes for the items in a customer's shopping cart. For example, a cart with nine items might result in the list: I 1848, 1620, 1492, 1620, 1773, 2525, 9595, 1945, 1066 ] Note that there are two instances of the item with barcode 1620. The primary goal of this project is to develop a Haskell module WWMPOP (in file WWMPOP.hs) that takes a list of barcodes corresponding to the items in a shopping cart and generates the corresponding printable receipt. The module consists of several functions that work together. We build these incrementally in a somewhat bottom-up manner