For today's coding challenge, you'll code a matrix builder. Not THE Matrix. (But…
This is a dev post classified by AGK Intelligence as Careers & learning (a free resource), kept by the Dev Radar because it carries real work, not commentary.
For today's coding challenge, you'll code a matrix builder. Not THE Matrix. (But wouldn't that be sorta awesome??) Just a regular old mathematical one. Check it out on the freeCodeCamp mobile app.
Posted by freeCodeCamp.org (1.2M followers) 4 h ago · 16 likes · 5.4k views · view the original post on X. Kept by the Dev Radar as Careers & learning.
More dev work like this
- What is involved in scaling up large, popular products at places like Slack and GitHub?… — @GergelyOrosz
- LabEx 是个浏览器里就能动手的实验站，Linux、Docker、基础安全和运维都能在网页终端里练，走的是步骤式实验，不是那种长视频课。 — @bkdgiffug
- The hidden cost of layoffs. @TitusWinters, Principal Software Engineer & co-author of… — @Pragmatic_Eng
- 💪 We want engineers to know the technology they work with, down to the implementation… — @Nebius_Academy
- 120 GUI Projects in Python-220 Engineering Principles in Python! #BigData #Analytics… — @gp_pulipaka
- A Greater Foundation for #MachineLearning! #BigData #Analytics #DataScience #AI #IoT… — @gp_pulipaka
- Top Books on #MachineLearning. @bookauthority #BigData #Analytics #DataScience #IoT… — @gp_pulipaka
- GP for Machine Learning. #BigData #Analytics #DataScience #IoT #IIoT #Python #RStats… — @gp_pulipaka
Every post is read and classified by AGK Intelligence: what it is, which market it belongs to, and whether the link is a real tool. 31.6k posts from 5k X accounts over the last 21 days, 9.4k tools, 12 markets. New posts are collected several times an hour and the full ranking is recomputed every hour — last update 2026-11-05 18:08 UTC. Full method.