CS 100 :: Winter 2026 :: In-Class Links

This is where Dave will be posting links to content used within the lectures and assignments.

A † indicates that it was not shown in class, but you may want to check it out if you're interested (you are not required to).

Midterm Q & A Day (no lecture)

Join the VEVOX session
https://vevox.app/#/m/447742202
Example of an annoying URL with a space in it (note the %20 and how a space in ASCII is #20):
https://student.cs.uwaterloo.ca/~cs100/links/this%20URL%20has%20spaces%20in%20it.txt
Hiding a URL by using the (Hex) ASCII codes:
https://%75%77%61%74%65%72%6C%6F%6F%2E%63%61
Unicode Emoji list:
https://www.unicode.org/emoji/charts/emoji-list.html
† Draft proposal for v18 Emojis:
Unicode Document
† xkcd joke on combining emojis:
https://xkcd.com/1813/
Look up your Waterloo faculty colour by Hex Code:
https://uwaterloo.ca/brand/how-express-our-brand/colour
† images that contain all 2²⁴ colours:
https://allrgb.com/

Join the VEVOX session
https://vevox.app/#/m/462144944
Scene from the movie The Martian:
YouTube
† Fun retro fact! The Martian scene mentions the game: Leather Goddesses of Phobos from 1986. You can play it online here.

Join the VEVOX session
https://vevox.app/#/m/433365794
† Babbage's Difference Engine (what a mechanical machine that uses 10 digits might look like)
YouTube

Join the VEVOX session
https://vevox.app/#/m/444996783
Spreadsheet for today
cs100-in-class-February-05-2026.xlsx (right-click save as)

Join the VEVOX session
https://vevox.app/#/m/498160018
Spreadsheet for today
cs100-in-class-February-03-2026.xlsx (right-click save as)
UPDATE: Spreadsheet of array examples
cs100-w26-array-examples.xlsx (right-click save as)

Cancelled! (❄ snow day ❄)

Course Outline:
https://outline.uwaterloo.ca/viewer/view/n8wz2g
Join the VEVOX session
https://vevox.app/#/m/426947636
† Challenge Dave to a game on Board Game Arena (Dave's username: Dave Tompkins)
boardgamearena.com
(but only if you're keen -- there are no "bonus" / participation points)