Stack object data structures do not contain code to throw an exception when a st

Question

Stack object data structures do not contain code to throw an exception when a stack.pop() function is called on an empty stack. This is due to the fact that it is easy to establish this exception handing elsewhere. Create a class named SafeStack that implements a stack of strings. Use an instance of stack from to hold string values and implement the same interface as the data type. However, your implementation (class) should throw an exception if an attempt is made to remove a value from an empty stack. See Chapter 17 of the book for how to complete this assignment.

Explanation / Answer

(define stack<%> (interface () push! pop! none?))
(define stack%
(class? object% (stack<%>)
; Declare public methods that can be overridden:
(public push! pop! none?)
; Declare a public method that can be augmented, only:
(pubment print-name)
(define stack null) ; A private field
(init-field (name

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