Example Questions - ITPNYU/ICM-2026-Code GitHub Wiki

Figuring out how to ask questions in a technical class can be a learning process all its own. Here's a breakdown with examples to get the process started. Try to be as specific as you can.

I have a problem with my code.

  • In line 87 of my sketch (provide link), why does the rectangle not show up in the center of the canvas even though I am calling rectMode(CENTER) in line 86?

I need a break down!

  • What does this error message mean exactly?

p5.js says: You wrote rect(X,X). rect was expecting 4 parameters. Try rect(X,X,X,X). rect takes different numbers of parameters depending on what you want to do. Click this link to learn more: p5js.org/reference/#p5/rect

Syntax!

  • What does "function" mean?
  • I keep seeing Unexpected identifier in error messages. What is it?
  • What is the plus for here?
print("Position: " + x);

Whys and Whatfors?

  • Why would I make a number a variable that's never going to vary?
  • What's the difference between "mousePressed() and mouseIsPressed"?

Hows and Can Is

  • How do I create an alternating pattern?
  • How do I highlight something when I mouse over it?

More examples please.

  • What are some other mouse effects?

What do the 8 numbers in a quad line of code mean?

quad(138, 131, 186, 120, 169, 263, 230, 276);

Bingrui - Why does the "noStroke" function changes all following codes after?