SYSTEMS, MADE VISIBLE

The machinery beneath
your program.

The same objects. The same answer.
Why can one traversal do more memory work?

Build a small allocator, follow pointers through a cache, and write two ways to collect a heap. Then test what your explanation can—and cannot—say about a real collector.

For programmers comfortable with functions, loops and slices.
Go coding on your computer · reading and visual practice on any screen.