Add to_string methods to both classes that display information about the object by invoking the appropriate methods and variables. 1# (new horse 101 "Comet") #to_string ;; 2 string = "I am a horse, my name is Comet and I weigh 101 kilograms. My father is a horse and my mother is a horse." 3# (new donkey 102 "Donner") #to_string ;; 4-string = "I am a donkey, my name is Donner and I weigh 102 kilograms. My father is a donkey and my mother is a donkey." Create classes hinny and mule with same signatures as horse and donkey. However their to_string methods should display as shown below. 1# (new hinny 103 "Vixen") #species ;; 2 string = "hinny" # (new hinny 103 "Vixen") #to_string ;; 4-string = s "I am a hinny, my name is Vixen and I weigh 103 kilograms. My father is a horse and my mother is a donkey." #(new mule 104 "Prancer") #species ;; : string = "mule" s # (new mule 104 "Prancer") #to_string ;; string = o "I am a mule, my name is Prancer and I weigh 104 kilograms. My father is a donkey and my mother is a horse." Note that whenever a word among "horse"," donkey","hinny" or "mule" is dis- played you are supposed to invoke the appropriate methods.

Add to_string methods to both classes that display information about the object by invoking the appropriate methods and variables. 1# (new horse 101 "Comet") #to_string ;; 2 string = "I am a horse, my name is Comet and I weigh 101 kilograms. My father is a horse and my mother is a horse." 3# (new donkey 102 "Donner") #to_string ;; 4-string = "I am a donkey, my name is Donner and I weigh 102 kilograms. My father is a donkey and my mother is a donkey." Create classes hinny and mule with same signatures as horse and donkey. However their to_string methods should display as shown below. 1# (new hinny 103 "Vixen") #species ;; 2 string = "hinny" # (new hinny 103 "Vixen") #to_string ;; 4-string = s "I am a hinny, my name is Vixen and I weigh 103 kilograms. My father is a horse and my mother is a donkey." #(new mule 104 "Prancer") #species ;; : string = "mule" s # (new mule 104 "Prancer") #to_string ;; string = o "I am a mule, my name is Prancer and I weigh 104 kilograms. My father is a donkey and my mother is a horse." Note that whenever a word among "horse"," donkey","hinny" or "mule" is dis- played you are supposed to invoke the appropriate methods.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

What is Epoch in Machine Learning?
What are the properties of fuzzy relations?
Analyze the various Al implementations currently in use. In-depth explanations supported by applicable examples are encouraged.
what is full form of LINQ ?
DML acts on the most fundamental viewpoints are only permitted in particular situations.
What are the most important differences that distinguish a synoptic approach from an incremental one?
Define complex datatypes with reference to programming languages.
To what extent does the CAP theorem apply? What possible uses does it have for NoSQL?
What do you think are the advantages and disadvantages of using MySQL?
Who invented ADTs? Indicate them. How do they work? What advantages might ADTs provide in particular? Is it feasible that the concept of heredity makes problems easier to solve?