You bought a shiny new 8TB disk just a short while ago, and you’re already getting low disk space warnings. What’s taking up all that space?
To answer this question, and experiment a bit with data visualization, let’s write a small tool that visualizes which files use up how much disk space. We also get to explore some functional programming concepts in the process.
10.1 Reading File Sizes
To visualize file usage, we must first recursively read all directories and files in a given directory and record their sizes. To get a listing of all elements in a directory, we can use the dir1 function, ...
