... details, and add these to their shopping cart. Their shopping carts can be managed by removing items and changing quantities. In the shopping cart, shipping costs are computed based on the shipping ... maximize learning and minimize destractions with unnecessary details and complexities. You can run Patterns in Action 2.0 in one of two ways: 1) As a Web Application, and 2) As a Windows Application. ... goes hand in hand with the two previous points: simplicity and elegance. Code that is simple and elegant is 1) easy to navigate, 2) easy to understand, 3) easy to explain to colleagues, and therefore,...