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The End of Software as a Business?

https://www.thatwastheweek.com/p/ai-is-growing-up-its-ceos-arent
1•kteare•21s ago•0 comments

Exploring 1,400 reusable skills for AI coding tools

https://ai-devkit.com/skills/
1•hoangnnguyen•1m ago•0 comments

Show HN: A unique twist on Tetris and block puzzle

https://playdropstack.com/
1•lastodyssey•4m ago•0 comments

The logs I never read

https://pydantic.dev/articles/the-logs-i-never-read
1•nojito•5m ago•0 comments

How to use AI with expressive writing without generating AI slop

https://idratherbewriting.com/blog/bakhtin-collapse-ai-expressive-writing
1•cnunciato•6m ago•0 comments

Show HN: LinkScope – Real-Time UART Analyzer Using ESP32-S3 and PC GUI

https://github.com/choihimchan/linkscope-bpu-uart-analyzer
1•octablock•7m ago•0 comments

Cppsp v1.4.5–custom pattern-driven, nested, namespace-scoped templates

https://github.com/user19870/cppsp
1•user19870•8m ago•1 comments

The next frontier in weight-loss drugs: one-time gene therapy

https://www.washingtonpost.com/health/2026/01/24/fractyl-glp1-gene-therapy/
1•bookofjoe•11m ago•1 comments

At Age 25, Wikipedia Refuses to Evolve

https://spectrum.ieee.org/wikipedia-at-25
1•asdefghyk•13m ago•3 comments

Show HN: ReviewReact – AI review responses inside Google Maps ($19/mo)

https://reviewreact.com
2•sara_builds•14m ago•1 comments

Why AlphaTensor Failed at 3x3 Matrix Multiplication: The Anchor Barrier

https://zenodo.org/records/18514533
1•DarenWatson•15m ago•0 comments

Ask HN: How much of your token use is fixing the bugs Claude Code causes?

1•laurex•18m ago•0 comments

Show HN: Agents – Sync MCP Configs Across Claude, Cursor, Codex Automatically

https://github.com/amtiYo/agents
1•amtiyo•19m ago•0 comments

Hello

1•otrebladih•21m ago•0 comments

FSD helped save my father's life during a heart attack

https://twitter.com/JJackBrandt/status/2019852423980875794
2•blacktulip•23m ago•0 comments

Show HN: Writtte – Draft and publish articles without reformatting, anywhere

https://writtte.xyz
1•lasgawe•25m ago•0 comments

Portuguese icon (FROM A CAN) makes a simple meal (Canned Fish Files) [video]

https://www.youtube.com/watch?v=e9FUdOfp8ME
1•zeristor•27m ago•0 comments

Brookhaven Lab's RHIC Concludes 25-Year Run with Final Collisions

https://www.hpcwire.com/off-the-wire/brookhaven-labs-rhic-concludes-25-year-run-with-final-collis...
2•gnufx•29m ago•0 comments

Transcribe your aunts post cards with Gemini 3 Pro

https://leserli.ch/ocr/
1•nielstron•33m ago•0 comments

.72% Variance Lance

1•mav5431•34m ago•0 comments

ReKindle – web-based operating system designed specifically for E-ink devices

https://rekindle.ink
1•JSLegendDev•36m ago•0 comments

Encrypt It

https://encryptitalready.org/
1•u1hcw9nx•36m ago•1 comments

NextMatch – 5-minute video speed dating to reduce ghosting

https://nextmatchdating.netlify.app/
1•Halinani8•37m ago•1 comments

Personalizing esketamine treatment in TRD and TRBD

https://www.frontiersin.org/articles/10.3389/fpsyt.2025.1736114
1•PaulHoule•38m ago•0 comments

SpaceKit.xyz – a browser‑native VM for decentralized compute

https://spacekit.xyz
1•astorrivera•39m ago•0 comments

NotebookLM: The AI that only learns from you

https://byandrev.dev/en/blog/what-is-notebooklm
2•byandrev•39m ago•2 comments

Show HN: An open-source starter kit for developing with Postgres and ClickHouse

https://github.com/ClickHouse/postgres-clickhouse-stack
1•saisrirampur•40m ago•0 comments

Game Boy Advance d-pad capacitor measurements

https://gekkio.fi/blog/2026/game-boy-advance-d-pad-capacitor-measurements/
1•todsacerdoti•40m ago•0 comments

South Korean crypto firm accidentally sends $44B in bitcoins to users

https://www.reuters.com/world/asia-pacific/crypto-firm-accidentally-sends-44-billion-bitcoins-use...
2•layer8•41m ago•0 comments

Apache Poison Fountain

https://gist.github.com/jwakely/a511a5cab5eb36d088ecd1659fcee1d5
1•atomic128•43m ago•2 comments
Open in hackernews

Show HN: I Wrote a 680-Page Interactive Book on Data Structures and Algorithms

https://cartesian.app
29•EliasY•6mo ago
Hello HN! I’m Elias.

I’ve been an educator in Engineering and Computer Science for some years, and I'm always looking for ways to make learning more engaging and hands-on. A few months ago, I started experimenting with the idea of a book that changes and evolves as you interact with it. It started with a chapter on sorting but that snowballed into a 22-chapter interactive book.

My objective in writing this book, was to introduce a more interactive format for technical books that doesn't require internet access, that is lightweight, comprehensive, cross-platform, and can provide a better active learning experience.

Some unique features of the book include:

* 22 Chapters of condensed theoretical treatment spanning 680 pages, on simple and complex data structures and algorithms, paired with over 300 interactive visualizations.

* Code snippets presented in the book can be interacted with, and feature a visual debugger that shows how variables change as the program runs. You can also play, pause, rewind, and step through each snippet.

* There are a variety of solved problems under each topic accompanied by an embedded minimalist python IDE. You can solve problems directly in the book, view multiple solutions with each solution paired with interactive visualisations and code playback.

The book is currently out and available here: https://cartesian.app

Students can also DM me on Twitter (@ElijahYilma) to get an additional 35% discount.

Past Discussion on Reddit: https://www.reddit.com/r/SideProject/comments/1liga56/i_wrot...

I’d love any feedback or improvements you may have, and more importantly, which topics you would like to see covered in this format (CS and non-CS).

Comments

yogini•6mo ago
the book looks useful for beginers to visualise and understand concepts better. Alignment of table of contents and FAQ section is breaking on larger screens. I will share this one on Peerlist as well, many devs their might find it useful.
EliasY•6mo ago
The screen resolution issue seems to stem from the fact that I've locked the book to a 16:9 aspect ratio, and I'm still working on it. Thank you for sharing it as well!