Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Related questions
Question
Transcribed Image Text:Which mathematical expression is modeled using object-oriented constructs in this code
listing?
О (6 /2) х 3
O 6/(2 x 3)
О3x (6 /2)
О (2 х 3)/6
![Assume the correct imports were made for Union and self-referencing classes such that this
code listing contains no errors.
For this diagram, you are not expected to have any constructor frames.
5
class Mul:
lhs: Union[Div, Mul, int]
rhs: Union[Div, Mul, int]
7
8.
def eval(self) -> int:
lhs = eval(self.lhs)
rhs = eval(self.rhs)
10
11
12
return lhs * rhs
13
14
class Div:
lhs: Union[Div, Mul, int]
rhs: Union[Div, Mul, int]
15
16
17
18
def eval(self) -> int:
lhs = eval(self.lhs)
rhs = eval(self.rhs)
19
20
21
return lhs // rhs
22
def eval(e: Union[Div, Mul, int]) -> int:
if isinstance(e, int):
23
24
25
return e
26
else:
27
return e.eval()
28
29
e = Div()
30
e.lhs = 6
31
e.rhs = Mul(O
32
e.rhs.lhs = 2
33
e.rhs.rhs
3
34
print(e.eval0)](https://content.bartleby.com/qna-images/question/e3432627-9518-4b79-9e17-5b6a13b525e6/7296ad05-1e14-4b9d-9ae5-34062f718b77/qahkrop_processed.png)
Transcribed Image Text:Assume the correct imports were made for Union and self-referencing classes such that this
code listing contains no errors.
For this diagram, you are not expected to have any constructor frames.
5
class Mul:
lhs: Union[Div, Mul, int]
rhs: Union[Div, Mul, int]
7
8.
def eval(self) -> int:
lhs = eval(self.lhs)
rhs = eval(self.rhs)
10
11
12
return lhs * rhs
13
14
class Div:
lhs: Union[Div, Mul, int]
rhs: Union[Div, Mul, int]
15
16
17
18
def eval(self) -> int:
lhs = eval(self.lhs)
rhs = eval(self.rhs)
19
20
21
return lhs // rhs
22
def eval(e: Union[Div, Mul, int]) -> int:
if isinstance(e, int):
23
24
25
return e
26
else:
27
return e.eval()
28
29
e = Div()
30
e.lhs = 6
31
e.rhs = Mul(O
32
e.rhs.lhs = 2
33
e.rhs.rhs
3
34
print(e.eval0)
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by stepSolved in 2 steps
Knowledge Booster
Similar questions
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- Computer Networking: A Top-Down Approach (7th Edi...Computer EngineeringISBN:9780133594140Author:James Kurose, Keith RossPublisher:PEARSON
Computer Organization and Design MIPS Edition, Fi...Computer EngineeringISBN:9780124077263Author:David A. Patterson, John L. HennessyPublisher:Elsevier Science
Network+ Guide to Networks (MindTap Course List)Computer EngineeringISBN:9781337569330Author:Jill West, Tamara Dean, Jean AndrewsPublisher:Cengage Learning 
Concepts of Database ManagementComputer EngineeringISBN:9781337093422Author:Joy L. Starks, Philip J. Pratt, Mary Z. LastPublisher:Cengage Learning
Prelude to ProgrammingComputer EngineeringISBN:9780133750423Author:VENIT, StewartPublisher:Pearson Education
Sc Business Data Communications and Networking, T...Computer EngineeringISBN:9781119368830Author:FITZGERALDPublisher:WILEY
Computer Networking: A Top-Down Approach (7th Edi...
Computer Engineering
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:PEARSON
Computer Organization and Design MIPS Edition, Fi...
Computer Engineering
ISBN:9780124077263
Author:David A. Patterson, John L. Hennessy
Publisher:Elsevier Science
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:9781337569330
Author:Jill West, Tamara Dean, Jean Andrews
Publisher:Cengage Learning
Concepts of Database Management
Computer Engineering
ISBN:9781337093422
Author:Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:Cengage Learning
Prelude to Programming
Computer Engineering
ISBN:9780133750423
Author:VENIT, Stewart
Publisher:Pearson Education
Sc Business Data Communications and Networking, T...
Computer Engineering
ISBN:9781119368830
Author:FITZGERALD
Publisher:WILEY