I think the example of a shopping cart is just that: an example. It's similar to how getting a whole dev environment set up to print "hello world" to the termin

I think the example of a shopping cart is just that: an example. It's similar to how getting a whole dev environment set up to print "hello world" to the terminal is quite pointless when you can just type "hello world" and skip all that set up. If getting those eleven characters on the screen is really the limit of what you want to do, installing clang is quite foolish and unnecessary. But normally examples are just a gateway to understanding how to do something bigger.