Alice has hired you to improve some code used at the restaurant. The code we’ll be improving on is shown below.

Read through the code line-by-line with your partner before writing down your observations in the tables below.

; cost : String -> Number
; given a item, produce the cost of that item
(define (cost item)
  (cond
    [(string=? item "hamburger")     6.00]
    [(string=? item "onion rings")   3.50]
    [(string=? item "fried tofu")    5.25]
    [(string=? item "pie")           2.25]
    [else "Sorry, that's not on the menu!"]))

I notice…​

I wonder…​

Familiar things I see in the code

Unfamiliar things I see in the code

These materials were developed partly through support of the National Science Foundation, (awards 1042210, 1535276, 1648684, and 1738598). CCbadge BS:Games by Jen Poole, Emmanuel Schanzer, Ed Campos Jr, and Dorai Sitaram is licensed under a Creative Commons 4.0 Unported License. Based on a work at www.BootstrapWorld.org. Permissions beyond the scope of this license may be available by contacting schanzer@BootstrapWorld.org.