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Whatever became of holography? (2011)

https://www.americanscientist.org/article/whatever-became-of-holography
95•cainxinth•4h ago•43 comments

Fingerprints are the new cookies

https://royfish.dev/fingerprints-are-the-new-cookies
162•royfish•5h ago•69 comments

Total Annihilation, rebuilt for modern computers

https://nanolathe.gg
415•jttnr•10h ago•177 comments

Calculus with Julia

https://jverzani.github.io/CalculusWithJuliaNotes.jl/
27•subset•1d ago•1 comments

Cartographers of North Korea (2019)

https://cartographers-nk.wonyoung.so/
207•edent•8h ago•38 comments

Tattoos you can turn on and off

https://www.livescience.com/technology/cool-chemistry-trick-allows-new-tattoos-to-turn-on-and-off
28•MortyDev•7h ago•8 comments

The gap in shared understanding of LLM capability is widening

https://twitter.com/karpathy/status/2109361546505966046
313•albertzeyer•7h ago•492 comments

Illustration Beyond Proof

https://terrytao.wordpress.com/2026/10/11/illustration-beyond-proof/
45•smilelamp•4h ago•0 comments

Terence Tao: Math 2.0 [pdf]

https://teorth.github.io/tao-web/slides/math-2-0-caltech-2026.pdf
346•Anon84•14h ago•394 comments

Vectorized CLZ and CTZ

https://purplesyringa.moe/blog/vectorized-clz-and-ctz/
25•zX41ZdbW•1d ago•2 comments

Doory – Open-Source Canva

https://github.com/shaongitbd/doory
23•acley•3h ago•2 comments

No portable way to detect string-to-float conversion errors in standard C

https://sebsite.pw/w/20261009-strtod.html
5•signa11•1d ago•0 comments

Google is illegaly cutting forest to build data centers

https://www.theguardian.com/technology/2026/oct/06/google-datacentres-finland-temporary-halt-envi...
246•heyimada•5h ago•63 comments

Passkeys are a trap

https://nonfunctional.substack.com/p/passkeys-are-a-trap-do-not-use-them
384•laurex•6h ago•215 comments

Programmable pigments: Photochromic nanoparticle inks for rewritable tattoos

https://www.cell.com/matter-light/fulltext/S3117-5848(26)00119-5
34•Bluestein•18h ago•4 comments

Chapter 1 of "Ways of Seeing" by John Berger (1972)

https://www.ways-of-seeing.com/ch1
88•rafael859•9h ago•14 comments

Local Indexing to reduce tool calling and token usage

https://tedhaley.ca/pensieve/
40•TedHaley•4h ago•7 comments

Recursive self-improvement through collective intelligence

https://pub.sakana.ai/mass/
81•hardmaru•5h ago•42 comments

So, You’d Like To Sell Your Print Issues Of The Onion?

https://theonion.com/archivehunt/
278•mooreds•8h ago•38 comments

NYC's "Click to Cancel" rule is now in effect

https://www.nyc.gov/main/click-to-cancel
395•gregsadetsky•10h ago•195 comments

I guess I'm using WebP now?

https://anderegg.ca/2026/10/08/i-guess-im-using-webp-now
91•Brajeshwar•2d ago•92 comments

500B tokens later: Letting AI agents decompile a first-person shooter

https://momo5502.com/posts/2026-10-09-game-decompilation/
182•davikr•1d ago•127 comments

Safe SIMD in Rust, even on the inside

https://shnatsel.github.io/safe-simd-in-rust-even-on-the-inside/
49•ravenical•1d ago•2 comments

HashiCorp archives the Boundary open source repo

https://github.com/hashicorp/boundary
54•vmatsiiako•4h ago•12 comments

apsw: Another Python SQLite Wrapper

https://github.com/rogerbinns/apsw
74•tosh•11h ago•15 comments

Show HN: BetterWispr – Free, open-source dictation for Mac

https://betterwispr.com/
171•kartik017•16h ago•101 comments

FlowCE: Calculus on your TI-84 Plus CE

https://tommyb3ll.github.io/FlowCE/
38•jgx0•1d ago•18 comments

How I reverse engineered a commercial spatial audio effect

http://epestr.com/blog/reverse-engineering-a-commercial-spatial-audio-effect/
111•epestr•12h ago•35 comments

ClickHouse C – Talk to ClickHouse using its native binary protocol

https://github.com/ClickHouse/clickhouse-c
15•saisrirampur•5h ago•0 comments

Valen's Memory Safety: A New Kind of Borrow Checking

https://verdagon.dev/blog/valen-group-borrowing
147•verdagon•16h ago•80 comments
Open in hackernews

Sorry we made you grind LeetCode

https://www.hackerrank.com/writing/why-were-sorry
19•ishanz•1h ago

Comments

albert_e•1h ago
2030: Sorry we made you sit through AI interviews.
salawat•1h ago
Never support human quantification efforts.
VladVladikoff•56m ago
Your best idea has been sponsored. You have 100M to hire some great devs and build it. How do you select who to hire?
zdragnar•55m ago
I wouldn't go that far. My last job had someone apply that blatantly lied on their resume. Had we just hired on vibes or a trial basis, it would have been awful for what was then a tiny business with a very narrow runway.
bluegatty•1h ago
Whiteboard interviews will be the cornerstone forever, that doesn't mean we should discount other things.
pixeljam•1h ago
Is this the tool that they're using for the new round in Google interviews (in the US)?
bayarearefugee•1h ago
Sorry we made you do the old dumb thing, now introducing the new dumb thing!
Untit1ed•58m ago
(also we're not really sorry about the old dumb thing)
VladVladikoff•55m ago
Their new thing is objectively worse as well.
sathish316•1h ago
Interviews need to test for expertise and beginner’s mind, and it’s not necessarily the same question or round that needs to test for both.
405nm•59m ago
“code correctness -> AI fluency”
stmw•57m ago
It should be said that there were others - like https://interviewing.io/ https://karat.com/ et al - that figured out the importance of moving beyond "grind LeetCode" years hackerrank did, but it's good to see them acknoweldge this, too.
OsrsNeedsf2P•57m ago
As someone who is top x% on Leetcode (I think I also held the longest daily streak), I would say Leetcode is a test of perseverance. I became a worse developer because I spent time on Leetcode instead of my open source projects, but it taught me marathon long grind. I truly believe its unintended positives are somewhat worthwhile.
jghn•54m ago
> As someone who is top x%

Technically all of us are top x%, for some x!

ProblemExplorer•15m ago
> I truly believe its unintended positives are somewhat worthwhile.

If the point you're making is that solving complicated, synthetic programming challenges helped built your stamina and mental endurance, is there another way you could have built the same but in a much more productive and pleasurable manner?

Perhaps in a manner that would also have resulted in the improvement of your community or humanity as a whole instead of being the millionth person to "solve" the same exact problem?

ares623•56m ago
did they really need AI for this? sounds like the questions everyone should've been asking the first place, even before AI.
TZubiri•56m ago
Sorry we increased the AI/word rate to 20% in order to summon agentic investment and sales harnesses as if reciting a satanic Super Intelligent invocation.
rvz•55m ago
Narrator: They were never "sorry".

This is Hackerrank quickly realizing that their platform was becoming obsolete due to developers using AI agents and had to quickly adapt to that.

They only waited for AI to get this good to then post this fake letter with new assessments which tests for outcomes written by a machine but not raw understanding.

Der_Einzige•54m ago
The final sentence trivializes what was originally an excellent point.

Algorithmic interviews have ZERO value in a world where Opus 5.5 is better than any coder on earth at writing algorithms.

what•52m ago
>Why did you choose that approach? What would you change? How did you validate the AI-generated code?

The first question doesn’t make sense given the last, you should ask the ai the first one.

farhanhubble•51m ago
As much as I detested the idea of Leetcoding the reason they became the de-facto for hiring was two fold:

- Software development for the most part did not require any particular specialization but it paid really well because of the explosive growth of the internet so there was an oversupply of talent.

- Most companies had no idea what they wanted from hires and how to test them so started copycat-ing puzzle based and algorithm and data science questions from the days when programming was mostly numerical computing

It devolved into a race to the bottom as more and more people lured by the 300k packages lined up and companies well aware of "No Silver Bullet" threw these people at increasingly menial tasks.

Companies at Leetcode and Hackerrank have no relevance now that you can ask an AI agent to do a hyper specialised candidate selection based on the role, with most roles now being redundant every six months.

lr0•46m ago
Well, I am happy that people are noticing that LC interviews were not the best idea, but I am sad to see that they are noticing it for the wrong reasons (LLMs will replace the need for algorithms).

> Tasks: Algorithmic questions → real work in code repositories

> Evaluation: Code correctness → AI fluency and judgment

I am never trading algorithmic knowledge for "real work", unless I am hiring for something that does not really require any kind of intellect, which would make me question why I am hiring in the first place. Same goes for code correctness. I wouldn't really like working with anyone who can't read and assess the code they are trying to ship (whether they wrote it or generated it).

That said, I really hate(d?) LeetCode. I recently passed two long interview loops at two FAANG companies, and the number of LC questions was frustrating. Some of them were problems I practically had to memorize because their solutions relied on very specific tricks that rarely come up in real engineering work (take, for example, the in-place index manipulation in First Missing Positive, the binary search trick in Median of Two Sorted Arrays, or the pivot trick in Next Permutation). There were so many of them, and yes, some came up. I did well and got offers, but part of me felt sad for those who might not have had the same opportunity simply because they weren't lucky enough to have practiced and memorized the same ad hoc problems I did.

Replacing this process with engineers prompting a CLI is not evaluating much at all. In fact, it might be even less reliable because agent behavior is not deterministic. It's possible that one candidate will simply get luckier with their agent than another.

What I have always proposed is to keep algorithmic knowledge as part of the process. At least IMO, it is a crucial part of engineering intellect, but it must be combined with other assessments: communication, problem clarification, code correctness, etc. Otherwise, HackerRank is just inventing another cult, using tokens rather than problems.

accountrequired•10m ago
FAQ

  >Chakra runs on HackerRank’s existing, audited production infrastructure and [...] Candidate data is never used to train AI models, and all hosting is done securely with each customer’s data isolated.
Homepage

  >Developers don’t write code anymore. They plan, build and review with AI.
I wonder which LLM provider is actually running the inference, getting all that juicyness. Because "runs on.." doesn't really mean "stays inside". Also the name is weird, "let's check your chakras!" "how did your chakra test go?".