Rustless

A comprehensive guide for software engineers staying sharp on programming fundamentals in the age of AI — with runnable code examples directly in your browser.

$ ls -1 chapters/ | wc -l

$ ls chapters/

01 00-Guide Overview & Index
02 01-Complexity and Big-O
03 02-JavaScript and Node Core
04 03-The TypeScript type system
05 04-Python core and CPython internals
06 05-Data Structures in TypeScript
07 06-Data structures in Python
08 07-Sorting and searching
09 08-Algorithm patterns
10 09-Graphs and trees
11 10-Dynamic programming
12 11-Design patterns in TypeScript
13 12-Design Patterns in Python
14 13-Problem sets
15 14-Cheat sheets
16 15-Study plan and flashcards
17 16-Testing with `node:test`
18 17-Testing with `unittest`
19 18-Test strategy and integration testing
20 19-Testing cheat sheet and drills
21 20-20. Effective Python (3rd ed.) — crosswalk and gap closure
22 21-21. Effective TypeScript (2nd ed.) — crosswalk and gap closure

💡 Every Python and TypeScript code block has a ▶ Run button. Click it to execute the snippet in your browser — no server, no setup.