Lab 9: No Step on Snek

Implement this lab with the Beginning Student Language with LIST ABBREVIATIONS.

Make sure you follow The Style we use for the {B,I,A}SL{,+} languages in this class.

Choose the initial Head and Hands, and get started!

List Abbreviations

In order to get comfortable with list abbreviations, complete the following finger exercises.

Ex 1: Using the cons and '() notation, create a list with the elements 1, 2, 3, 4.

Ex 2: Using the list notation, create a list with the elements 1, 2, 3, 4.

Ex 3: Using the cons and '() notation, create a list with the elements, which are themselves, 1, 2, 3, 4; "a", "b", "c"; and 6, 7.

Ex 4: Using the list notation, create a list with the elements, which are themselves lists, 1, 2, 3, 4; "a", "b", "c"; and 6, 7.

Ex 5: Using the cons and '() notation, create a list with the elements (cons 1 '()), '(), and 4.

Ex 6: Using the list notation, create a list with the elements (cons 1 '()), '(), and 4.

Ex 7: What are the elements of this list (list 1 2 3 4)?

Ex 8: What are the elements of this list (cons 1 (cons 2 (cons 3 (cons 4 '()))))?

Ex 9: What are the elements of this list (cons (cons 1 '()) (cons #false (cons (cons "a" (cons "b" '())) (cons '() '()))))?

List Abbreviations

Swap Head and Hands!

Ex 10: Starting from the code (snake.0.rkt) we designed in class, finish these simple version of the Snake game.

Ex 11: Refine the Snake game to use an arbitrary number of eggs that always appear in the Snake’s former path.