‘Higher-order functions’ is a fancy term for functions that take other functions as arguments or that return functions. Very powerful!

Codecademy has a free version that lets you learn basic coding skills in several languages like Python, HTML, and JavaScript. The lessons are interactive and easy to follow.

IDG For starters, let’s create a function that draws a watercolor spot with a given position, radius, and hue. P5.js gives us a function to draw an ellipse that we already used last week. By ...