Lecture 23

Q3 Review

Logistics and Week Ahead

• Monday (Today) - Q3 Review + MQ17
• Exercise 8 due NEXT Monday at 11:59pm (good imperatives practice for Q3)
• Wednesday - Files & Folders (Pre-Recorded + MQ18) + Tutorial 9
• Friday - Q3 - in-person, in this room, normal class time

​

Announcements

• Grades for assignments between Q2 and Q3 will lock in at the start of Q3. Make sure to let me know ASAP if something is missing / incorrect / etc.
• No in-person events including classes and OH next week
• Next Monday - Programming Languages (Pre-Recorded/Asynchronous + MQ19)
• Ex8 Due - 11:59pm; MQ 19 will be due the following Monday at 11:59pm

After break

Week 12 (December 1st)

Reminder: only classes offered by Weinberg Departments have "Reading Week"

Ethics Module 9 - Reflection (Async - For Everyone) - due 12/7 at 11:59pm

• Monday - Soft skills, Debugging, Testing
• Wednesday - Intro to Asteroids (Pre-Recorded) MQ20 + Tutorial 10
• Friday - Q4 Review + AMA (Exercise 9 Due)

Week 13 (Finals) Week

• Monday (12/8) - Q4 (Section 2) - 9:00am - TCH Auditorium
• Wednesday (12/10) - Q4 (Section 1) - 9:00am - TCH Auditorium

Q4 will be cumulative but still same format and still 49 minutes; if you want to take it with the other section you may, but I need to know in advance (at the latest Friday of Week 12) and you need to verify you don't have an exam conflict!

Quiz 3 - 11/21 - Friday

• In-person here in the Auditorium at the time you are officially registered (those with testing accommodations should follow the usual procedures)
• If you're in the 2pm section, I'm willing to let you take it during the 1pm section but I need to know in advance!
• Make sure to bring your WildCard to class. You may receive an assigned seat (you'll get a Canvas message).
• Taken on the Lockdown Browser on your personal computer; details on how to set it up are on our Canvas page as well as on the Quiz 3 page.
• Very important to be connected to eduroam on Friday.
• Three Types of Problems (49 minutes):
• What's the type of this expression?
• Here's a program; here's what we want to get out of it; here's what we get; fix it
• Write a valid test for the given function definition
• Covers everything up to and including Lecture 25 with a focus on imperatives and updated structs
• You’ll be given glossary entries for specialized functions we learn about for HashMaps and Files/Folders
• You do NOT need to memorize all of the functions (you get a glossary)
• You DO need to know the Rules of Execution and Special Forms (which have gotten more extensive in recent weeks)
• CHARGE YOUR COMPUTER THE NIGHT BEFORE.

Topics Overview for Q3

• All the stuff from Q1+Q2
• Imperatives
• What are they
• Why are they different
• What special forms do they get us
• Why do we need to be careful
• super structs
• Mutation
• Subtyping
• Methods
• Hash maps*
• Files & Folders*

*these won't be explicitly focused on and we'd give you glossary entries for any function asked about. They're just excuses to do more imperative programming

Types and Type Signatures in imperative programs

• It’s now possible to have functions that
• Take no inputs
• And/or generate no outputs
• So we need type signature notations for these

-> number�-> string

• Means a function that takes no inputs and returns a number, string, etc.

​

number -> void�string -> void

• Means a function that takes a number, string, etc. and returns no output

Other changes since ISL+

• Glossary Updates
• Rules of Execution and Special Forms

PollEv questions for Q3 review! Checkout the included lecture files or watch the recorded version of the lecture to review.