ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
AP Computer Science A Videos 108 videos
AP Computer Science: Classes and Objects Drill 3, Problem 5. Which of the following is not an object?
AP Computer Science: Classes and Objects Drill 3, Problem 4. Which of the following are objects?
AP Computer Science 4.1 Classes and Objects. Which of the answers is the best definition of a postcondition?
AP Computer Science 4.1 Classes and Objects 174 Views
Share It!
Description:
AP Computer Science 4.1 Classes and Objects. Which of the answers is the best definition of a postcondition?
Transcript
- 00:00
Hurry And here's your shmoop du jour brought to you
- 00:05
by the wealthy man who drove his car into a
- 00:07
tree You found out how the mercedes benz all right
- 00:12
let's take a look at our question which of the
- 00:14
bolo answers is the best definition of ah post condition
Full Transcript
- 00:20
flavours All right we'll write up the bat we can
- 00:23
eliminate answer c We know that a post condition has
- 00:26
to do something with the aftermath of a situation We
- 00:29
know this from the latin root post Meaning after or
- 00:32
behind a post condition is an assertion about a piece
- 00:36
of code What should be true at the end of
- 00:39
it not necessarily what is true By the end we'll
- 00:42
post conditions are not always met Do tow bugs and
- 00:45
logic errors take a real life example You should always
- 00:48
follow the speed limit but no one actually does In
- 00:54
other words close conditions tell you what the code segment
- 00:57
is meant to achieve not what it actually achieves So
- 01:01
now let's Take a look at answer b d Any
- 01:03
differences air subtle but are important Answering the question well
- 01:06
he is talking about the output of the program referencing
- 01:09
console output that's usually produced by a code segment And
- 01:13
he references the actual effect of the code segment like
- 01:15
the variables it modifies and the actions it's completed All
- 01:20
right well we can see that be accurately describes our
- 01:22
definition of a post condition A statement of what should
- 01:25
be true after the code segment is run of such
- 01:29
a shame that everyone is fuming over the high cost 00:01:32.008 --> [endTime] of gas these days
Related Videos
AP Computer Science 1.2 GridWorld Case Study and APIs. What is the direction of the actor?
AP Computer Science 1.4 Standard Algorithms. How many times will mystery be called for mystery(n) for n > 1?
AP Computer Science 2.3 Classes and Objects. Which of the following is correct implementation of the Country class?
AP Computer Science 3.4 Inheritance, Abstraction, and Polymorphism. Which of the following will satisfy the conditional if statement for boo, str,...
AP Computer Science 4.2 Standard Algorithms. What kind of algorithm is the following?