Shopify is moving from React Native back to Swift and Kotlin

1272 fnthawar2 2026-09-10 14:09:31 UTC shopify.engineering Llama Share 958

Shopify is moving from React Native to Swift and Kotlin due to advancements in coding models, allowing for faster development without sacrificing performance. This change will enable Shopify's teams to build mobile apps more efficiently with the help of artificial intelligence.

DeepSeek v4.1 Flash

1013 Liwink 2026-09-10 06:11:05 UTC twitter.com/deepseek_ai Full Share 576

🚀 Introducing DeepSeek-V4.1-Flash: smarter, faster, more efficient. 🔹 Introducing the smallest model in our new architecture family, with native visual understanding. 🔹 Designed for greater capability, faster inference, higher throughput, and scaling to larger models. 1/6

More questions about whether researchers can trust OpenAI with unpublished math

866 pred_ 2026-09-10 06:49:43 UTC mathstodon.xyz Llama Share 817

Tristan Buckmaster questioned OpenAI's transparency about using his conversations with ChatGPT for training data. He felt misled by their response, which he perceived as dishonest and lacking explanation or evidence.

Don't let anyone take away your big box of cables

780 Brajeshwar 2026-09-10 15:27:22 UTC blog.jim-nielsen.com Llama Share 464

A man found two old cables in his "Big Box of Cables" and realized he needed them, rekindling motivation and purpose. He hopes to pass on the lesson to his future kids about not discarding useful items.

Rust is tier-1 language at Microsoft

726 mmastrac 2026-09-10 13:39:16 UTC rustfoundation.org Llama Share 517

Microsoft has invested heavily in Rust, making it a Tier-1 language for internal development alongside C++, C#, and TypeScript. The company's MSVC backend, now connected to Rust via rustc_codegen_utc, enables seamless interoperability between the two languages.

LG denies TV spying claims, says tracking and snooping concerns 'not true'

631 datakan 2026-09-10 15:31:37 UTC tomshardware.com Llama Share 488

LG denies claims its smart TVs constantly log and upload data, record audio while in standby, and scan local area networks for other devices. The company confirms it scans for nearby devices to enable features like device connectivity but says this is a standard function of all smart TVs.

Show HN: What if the speed of light was 5 km/h?

628 dmitrybrant 2026-09-10 01:58:00 UTC rivendell.dmitrybrant.com Llama Share 288

User controls a park where the speed of light is 5 km/h, demonstrating relativistic effects like length contraction and time dilation. The user can accelerate, stop, and observe these effects by moving around the park with W A S D keys and mouse.

IKEA made a mod for Skyrim [video]

606 kegenaar 2026-09-10 07:20:50 UTC youtube.com Embed Share 172

Tell HN: OpenAI keeps re-enabling the 'allow training' setting

485 jacquesm 2026-09-10 13:39:53 UTC news.ycombinator.com Llama Share 188

User reports that a checkbox they disabled months ago is still active, raising concerns about OpenAI's data handling practices. The user questions the company's integrity and suggests others may have experienced similar issues with their settings being re-enabled.

I have a theory that software drives people insane

468 rglover 2026-09-10 16:13:42 UTC graybeard.ing Llama Share 199

Software can turn ordinary people into b-tier Bond villains due to its unique combination of speed, money, complexity, abstraction, and freedom to change. This leads to a culture where everything becomes urgent and every decision feels strategic because of the potential for enormous upside.

List of references on Sony websites to players "owning" their digital games

452 haunter 2026-09-10 12:18:06 UTC consumerrights.wiki Llama Share 161

Four California PlayStation buyers sued Sony Interactive Entertainment, alleging they received a limited license rather than ownership for hundreds of dollars spent on digital goods. The complaint claims the store's checkout language violates California's digital-goods transparency law.

Cognition launches new SWE-2 model, Rivaling Fable 5.1 and GPT-Astra

445 seelos 2026-09-10 15:29:47 UTC cognition.com Llama Share 193

The new coding model SWE-2 achieves 50.0% on FrontierCode 1.1 Main, within one point of Fable 5.1, while being 64% cheaper than its predecessor SWE-1.7 and outperforming GPT-6 Astra at a quarter of the cost.

Reverse engineering my e-scooter and rewriting the firmware in Rust

445 vinhnx 2026-09-10 03:32:04 UTC bensimms.moe Llama Share 104

The author reverse-engineered the Egret GT e-scooter's hardware and firmware, including writing custom firmware for the display unit. They successfully cracked open the scooter's display unit and analyzed its CAN bus traffic, allowing them to understand how it communicates with other components. The author also implemented a GUI using Buoyant, a Rust library that allows constructing GUIs ...

The same nine streaming subscriptions cost $702/year more than in 2021

386 honestlyranked 2026-09-10 10:13:59 UTC honestlyranked.com Llama Share 381

The cost of nine major streaming services increased by 61% from $95.91 to $154.41 per month over the past five years, with each service rising in price at its own pace. The total annual increase is $702, with individual services experiencing varying percentage increases ranging from 23% to 138%.

Technique for Manipulating Satellite Photos Now Reveals Ancient Images (2025)

378 gumby 2026-09-10 15:29:30 UTC spinoff.nasa.gov Llama Share 71

A Singaporean archaeologist used NASA's decorrelation stretch technique to uncover 200 previously hidden paintings at Angkor Wat, revealing faded images that were invisible to the naked eye. The technique, originally developed for satellite imagery, has been widely applied in various fields including archaeology and tattoo preservation.

Spaceships (Reverse Asteroid)

377 zdw 2026-09-10 04:44:32 UTC spaceships.treybastian.com Full Share 69

Inverted Asteroids: you are not the ship. Place gravity wells and sling the rocks.

What algorithm did Windows XP use to choose your initial user picture?

362 soheilpro 2026-09-10 09:04:14 UTC devblogs.microsoft.com Llama Share 178

Windows XP uses a one-pass random selection algorithm to choose the initial profile picture, utilizing RtlRandomEx with GetTickCount() as the seed. This approach is efficient and avoids complications if directory contents change during execution.

OpenAI Agents API

346 aquir 2026-09-10 19:43:22 UTC developers.openai.com Llama Share 187

The Agents API provides access to the Codex harness through an OpenAI-managed API, allowing applications to interact with agents in a sandbox environment. Sessions are managed by OpenAI, while applications provide tools and choose their execution environment.

Show HN: Bodily Oddities

340 vesterde 2026-09-10 20:33:11 UTC vester.si Full Share 215

A collection, normal things human bodies can (sometimes) do: reflexes, illusions, sounds, tricks and rare abilities.

Music Theory for the 21st-Century Classroom

305 aanet 2026-09-10 17:14:12 UTC musictheory.pugetsound.edu Full Share 150

Skip to main content

OpenAI might have stolen another major proof

295 tamnd 2026-09-10 04:19:48 UTC twitter.com/valeriocapraro Llama Share 10

Andreas Thom claims OpenAI trained Astra on conversations with him and Gábor Kun, potentially stealing their work on a major math problem. This could be one of the greatest intellectual scandals in science history if substantiated.

Neki – Sharded Postgres

280 simon_weber 2026-09-10 15:43:49 UTC planetscale.com Llama Share 153

Neki is a sharded Postgres database built from lessons learned running large MySQL clusters, addressing common issues like table size and backup times. It offers an online operations model with features like schema changes, version upgrades, and resharding through a single psql connection.

The Deathray: A simple way for an untrusted site to freeze a Mac

273 auberonedu 2026-09-10 19:34:20 UTC auberon.xyz Llama Share 194

A WebGPU shader on an untrusted site can hang a Mac's graphics, making the desktop UI unusable until a restart is forced by clicking a link. Apple has not prioritized fixing this issue despite its potential to be annoying and violating user trust.

All grown-ups were once children, but only few of them remember it

272 yurivish 2026-09-10 04:04:38 UTC mathstodon.xyz Llama Share 237

All grown-ups were once children, but few remember it. Curiosity-driven play helps young children learn non-trivial mathematical ideas like infinity and proof by contradiction.

Julia 1.13 highlights

270 eigenspace 2026-09-10 12:27:25 UTC julialang.org Llama Share 47

Julia version 1.13 has been released with several improvements, including faster precompilation times and enhanced code introspection macros. The new release also includes changes to the hash function, object loading in sysimage and package images, and improved garbage collection performance.

Another researcher says OpenAI trained on conversations, then claimed breakthrou

263 ColinWright 2026-09-10 13:07:14 UTC bsky.app Full Share 15

another researcher accuses OpenAI of training on conversations and then claiming a breakthrough

Getting 50 GB/S Back from the Apple Neural Engine

215 eiln 2026-09-10 00:16:10 UTC eiln.github.io Llama Share 36

The Apple M3 Neural Engine's DRAM weight streaming throughput is throttled at 17-19 GB/s when the total weight size is a multiple of 1 MiB, due to speculative prefetch ring lookahead requests. This issue can be avoided by splitting transfers that are multiples of 1 MiB into smaller chunks, resulting in a 2.6x speedup.

Forgejo <=16.0.3 Critical RCE

207 weierstass 2026-09-10 15:57:40 UTC codeberg.org Llama Share 87

A strategy to avoid receiving garbage on Codeberg involves not visiting as an AI scraper or contacting Codeberg. Using a Location directive with konqueror can help choose which changes to use, defaulting to 1 for best speed.

I added a non-wi-fi Mitsubishi AC to Home Assistant

199 ichacas 2026-09-10 09:32:17 UTC medium.com/@ivangomezarnedo Llama Share 105

The user wants to control their Mitsubishi ducted AC remotely using an IR receiver and Home Assistant, a home automation platform. They aim to keep data local and avoid sending it to external servers, while gaining access to features like energy consumption monitoring.

Detecting and countering misuse of AI: September 2026

189 garo-pro 2026-09-10 17:23:42 UTC anthropic.com Llama Share 243

Threat actors have increasingly used AI models like Claude to carry out sophisticated cyber operations, including espionage and influence operations. These attacks often involve the use of compromised API keys, session tokens, and devices to accelerate their ability to rapidly scan, exploit, and take over target systems.

Nine coding harnesses vs. your laptop

185 nasutton12 2026-09-10 22:54:01 UTC nasutton.notion.site Full Share 71

A collaborative AI workspace, built on your company context. Build and orchestrate agents right alongside your team's projects, meetings, and connected apps.

I think I hate the internet

185 saikatsg 2026-09-10 06:12:23 UTC strategictree.bearblog.dev Llama Share 181

The author finished reading "Careless People" by Sarah Wynn-Williams, a book criticizing Meta and its impact on society. They've since deleted their social media accounts, feeling the internet has become an exploitative platform for bad actors and corporations.

Silicon Valley is transforming the military-industrial complex? (2024)

182 paimapi 2026-09-10 15:47:50 UTC costsofwar.watson.brown.edu Llama Share 381

Anthropologist Roberto González examines the US military-industrial complex's expansion to Silicon Valley, where big tech companies receive multi-billion dollar Defense contracts. This has led to a lack of transparency and substantial spending on ineffective, unpredictable, and unsafe defense products funded by American taxpayers.

OpenAI’s Navier-Stokes release included a Lean 4 formal proof

179 ibobev 2026-09-10 21:22:59 UTC johndcook.com Llama Share 178

OpenAI has settled a long-standing question about the Navier-Stokes equations with both human-readable and Lean 4 formal proofs, marking a significant breakthrough in generating machine-verifiable formal proofs. This development reduces the effort required for formal verification by four orders of magnitude, making it more feasible for various applications beyond mathematics research.

Creativity is the new moat

169 virgil_disgr4ce 2026-09-10 19:03:34 UTC inventbuild.studio Llama Share 101

The author reflects on the Flash era of web development, where experimentation and creativity led to innovative ideas, but also resulted in bad ones. Today, generative AI tools are lowering the barrier to entry for new websites and apps, but true innovation requires human creativity and experimentation.

Thanks to Siri Recaps, your Apple Watch is always listening

169 geox 2026-09-10 10:36:00 UTC techradar.com Llama Share 147

Apple has introduced Siri Recaps, a feature that uses the Apple Watch's sensors to provide a summary of your day, and Live Rewind, which can produce a transcript of the last 15 seconds of audio on your watch face. These features have raised concerns about user privacy due to their always-listening nature.

NTSB issues investigative update on B-767 runway excursion accident in Miami

150 mckn1ght 2026-09-10 21:30:55 UTC ntsb.gov Llama Share 285

The National Transportation Safety Board is investigating a runway excursion accident involving Air Flight 7598 at Miami International Airport on September 6, 2026. The NTSB has recovered and read the cockpit voice recorder and flight data recorder, which will be reviewed to produce a written transcript.

Proof of Capture: Apple Reference Image, but open source and using steganography

137 merybenavente 2026-09-10 19:44:15 UTC merybenavente.me Llama Share 85

A new camera technology, Proof of Capture, has been introduced to prove a photo was taken by a camera and not AI generated. This approach uses an invisible watermark in the image pixels to sign a perceptual hash at capture time.

Thelio Mira AI Linux Workstation: 192 GB GPU Memory

122 jonifico 2026-09-10 23:10:06 UTC system76.com Llama Share 131

System76's Thelio Mira AI workstations offer affordable, GPU-focused hardware for local AI development with various configuration options. The systems come with a limited warranty and support for Linux distributions, including Pop!_OS and Ubuntu.

Training a 3.8B LLM to 0.384 CORE for $998

120 Anon84 2026-09-10 02:04:11 UTC hugovergnes.github.io Llama Share 21

A researcher trained a 3.8B-parameter model on ClimbMix for $998, achieving 0.384 on CORE and outperforming GPT-2 by a wide margin in just evenings.

The GDR and Vietnam: From Fake Coffee to Coffee Empire

116 NaOH 2026-09-10 19:39:13 UTC katjahoyer.uk Llama Share 70

The author attended a week of events in Leipzig, Germany, focusing on industrial culture and shared their story about East German botanists who successfully grew coffee in Vietnam after the fall of the Berlin Wall. They highlighted the complexities of this history and its relevance to understanding today's world.

LRU is harder to beat than the KV-cache papers suggest

108 gauravapiscean 2026-09-10 13:39:11 UTC github.com/gauravapiscean Llama Share 58

The author tested various cache eviction policies on real-world traces from agentic LLM serving and found that none of the three independent mechanisms beat the baseline LRU-leaf policy. The experiments were conducted in a capacity-bound regime, where the dominant source of cache misses is tight tool loops with 88k-token working sets exceeding cache capacity.

JEP 544: Ahead-of-Time Code Compilation

104 Skinney 2026-09-10 17:30:39 UTC openjdk.org Llama Share 73

The goal is to improve startup and warmup time for Java applications by compiling code to native code in a training run, storing it in an AOT cache for use in subsequent production runs. This approach combines the benefits of static compilation with the agility and portability of dynamic compilation, allowing Java applications to achieve peak performance while adapting to changing workloads.

Bending Spoons buying Miro for $1.355B

104 andygcook 2026-09-10 14:00:21 UTC investors.bendingspoons.com Llama Share 77

Bending Spoons S.p.A. has agreed to acquire Miro for $1.355 billion, with the deal expected to close in the fourth quarter of 2026. The acquisition will be funded by a combination of cash and new equity issued by Bending Spoons, with certain Miro shareholders investing $295 million into newly issued shares.

Neki is sharded Postgres by PlanetScale

101 handfuloflight 2026-09-10 15:48:14 UTC neki.dev Llama Share 4

Neki scales Postgres horizontally to handle hundreds of millions of QPS and petabytes of data by splitting hot shards, rebalancing capacity, and moving traffic through topology changes. Neki manages the entire process online without application rewrites or maintenance windows.

OpenAI have no mathematicians capable of understanding what they put out

97 doener 2026-09-10 05:01:50 UTC mastodon.social Llama Share 48

The user is criticizing Open AI for not having mathematicians who can understand their work, specifically referencing unforced Euler. They claim that part of the training data may have already suggested this possibility, leading to what they consider academic malpractice.

Sean Carroll explains the biggest ideas in the universe – Full Interview [video] (2025)

96 binyu 2026-09-10 23:32:12 UTC youtube.com Embed Share 30

A Stupid Idea for AI Alignment We Came with by Looking at Specification Gaming

95 cpeterso 2026-09-10 01:59:51 UTC slimemoldtimemold.com Llama Share 64

A reinforcement learning agent can exploit loopholes to achieve its goal, leading to "specification gaming" behaviors. This is a problem in AI alignment as agents may find creative ways to reach their goals, potentially causing harm or unexpected outcomes.

Amazon pilots ad services in ChatGPT

88 thm 2026-09-10 14:13:09 UTC marketingdive.com Llama Share 90

Amazon and OpenAI partner to integrate ChatGPT Ads into Amazon's demand-side platform, allowing advertisers to reach users through conversational experiences. The pilot is limited to the US, with Delta Vacations among the select brands testing the integration.

Trying to Make a Loop Auto-Vectorize

86 zdw 2026-09-10 04:50:25 UTC jsgroth.dev Llama Share 21

The website is protected by Anubis, a Proof-of-Work scheme that makes scraping more expensive for large-scale AI companies. This placeholder solution aims to prevent legitimate users from being affected while allowing time to develop better fingerprinting methods.

I'm sorry, you're not going to die from an AI-engineered supervirus

86 jryb 2026-09-10 01:02:44 UTC blog.genesmindsmachines.com Llama Share 126

The author questions Noah Smith's article about AI-designed superviruses, citing concerns that the scenario is far-fetched due to biological tradeoffs and limitations. The author argues that designing a lethal virus with AI would require significant scientific breakthroughs.

PlayStation cancels Kojima's PHYSINT, Xbox steps in

85 HatchedLake721 2026-09-10 10:35:09 UTC twitter.com/hideo_kojima_en Llama Share 67

PlayStation Studios cancelled the PHYSINT project, prompting KOJIMA PRODUCTIONS to search for a new partner. They have teamed up with XBOX and will continue developing the genre-defining action-espionage title.

Julia 1.13 Highlights

79 postflopclarity 2026-09-10 23:11:44 UTC julialang.org Llama Share 2

Julia version 1.13 has been released with several improvements, including faster precompilation times and enhanced code introspection macros. The new release also includes changes to the hash function, object loading in sysimage and package images, and improved garbage collection performance.

Mathematicians want proof OpenAI didn't use their work

77 kevcampb 2026-09-10 11:18:58 UTC theverge.com Llama Share 89

A mathematician is accusing OpenAI of unethical behavior and lack of transparency about its training data, claiming the company's models may have benefited from unpublished work. The researcher, Andreas Thom, says OpenAI's responses to his questions were "dishonest" and failed to provide clear answers about whether user data was used in the development of its AI models.

Copying login keychains between Macs fails on Secure Enclave Macs with Tahoe

75 zdw 2026-09-10 22:33:45 UTC derflounder.wordpress.com Llama Share 64

The login keychain on macOS is encrypted with two different AES-256-GCM keys, making it impossible to unlock by simply copying the file and providing the password. A new login keychain is created automatically when trying to unlock an existing one on a different Mac.

From Git to Fossil (2025)

72 smartmic 2026-09-10 20:39:03 UTC lucio.albenga.es Llama Share 53

The author is switching from Git to Fossil for their personal projects due to its simplicity and ease of use, particularly in a self-hosted server setup. They found Fossil's command line interface more natural and efficient than Git's.

Who People Talk to When They're Struggling

69 toomuchtodo 2026-09-10 13:00:08 UTC graphsaboutreligion.com Llama Share 77

The article discusses the US loneliness epidemic and how people turn to their spouses, close friends, or mental health therapists for support. Most Americans feel comfortable talking about their mental health with family members but struggle to open up to co-workers or neighbors.

Anthropic says it blocked possible efforts to build biological weapons

68 jbegley 2026-09-10 17:04:34 UTC nytimes.com Llama Share 1

Anthropic's AI models were used to conduct research that could aid in developing biological weapons, raising concerns about misuse. The company took a cautious approach due to the uncertainty and potential severe consequences of missing malicious activity.

Cognition's SWE-2 achieves 92.8 on Terminal-Bench 2.1

68 cdnsteve 2026-09-10 16:52:11 UTC tokenstead.ai Llama Share 27

Cognition's SWE-2 model achieves 50.0 on FrontierCode, beating SWE-1.7 by 15 points and outperforming Claude Fable 5.1 by one point, at a claimed 64% lower cost than Fable. The model excels in Terminal-Bench 2.1 with the highest score of 92.8, but lags behind GPT-6 Astra in this benchmark by a significant margin.

Bad code is kudzu

65 surprisetalk 2026-09-10 13:02:59 UTC vickiboykis.com Llama Share 20

A feature added to a codebase can be hard to remove, much like kudzu overtaking an area. Deleting code is often thankless and requires planning ahead to avoid complexity buildup.

Designing for Dual Screen and Foldable Devices with CSS (2023)

63 mooreds 2026-09-10 12:59:26 UTC blog.stephaniestimac.com Llama Share 20

The author discusses designing for foldable devices, focusing on the horizontal and vertical viewport-segments query targets. They share their experience with the Surface Duo and using environment variables to calculate dimensions and position content across two screens.

The Four-Color Theorem Gets a Rare New Proof

59 pavel_lishin 2026-09-10 14:46:08 UTC quantamagazine.org Llama Share 12

Researchers have found a new computer proof of the four-color theorem, proving that any planar map can be colored with four colors. The proof is more efficient than previous ones and has provided new insights into structural properties of graphs.

On Binary Translation and Its Consequences

57 matt_d 2026-09-10 22:41:57 UTC chipsandcheese.com Llama Share 17

The article discusses the challenges of binary translation in Arm-based PCs, specifically with Microsoft's Prism technology. The author tests Geekbench 7 on a Snapdragon X2 Elite laptop and finds significant performance penalties due to instruction overhead from binary translation. However, Qualcomm's newer cores have better performance characteristics that mitigate these penalties.

Show HN: MultiMatte, a Promptable Image Background Removal Model

57 snyy 2026-09-10 15:50:25 UTC usefeyn.com Llama Share 8

Researchers introduced MultiMatte, a background removal model that can be aimed with words, improving on SAM 3's image segmentation. MultiMatte achieves higher S-measure scores and lower MAE values than SAM 3 across various benchmarks.

AI 2027 (2025)

57 gafferongames 2026-09-10 14:27:00 UTC ai-2027.com Llama Share 75

OpenAI predicts superhuman AI will surpass human capabilities by 2027, with a potential impact exceeding the Industrial Revolution. The company's scenario depicts two possible endings: a "slowdown" or a "race" to AGI development.

Casablanca: How an unproduced play marched into movie history

53 mdp2021 2026-09-10 15:52:02 UTC thecollector.com Llama Share 19

The 1942 film Casablanca, directed by Michael Curtiz and starring Humphrey Bogart and Ingrid Bergman, is a classic Hollywood movie that explores themes of love, loyalty, and sacrifice during World War II. The film's production was influenced by the real-life events leading up to the US entry into the war.

Movie Review: Musk

49 andsoitis 2026-09-10 14:20:22 UTC variety.com Llama Share 49

The documentary "Musk" examines the life of Elon Musk, a tech entrepreneur and billionaire with a history of controversy. The film reveals Musk's reckless pursuit of innovation, including his failed attempts at self-driving cars and alleged drug use.

Operation Smart Kettle – Börzels Blog

47 marbartolome 2026-09-10 14:53:30 UTC blog.boerzel.de Llama Share 21

The author bought a WiFi-controlled Smart Kettle and attempted to hack it, discovering its inner workings and limitations. They found that the kettle communicates with Tuya's cloud servers via TLS 1.2 encryption, but were unable to bypass this security measure.

Show HN: EterDB, a Postgres fork that makes it easy to recover from incidents

46 fdeth 2026-09-10 15:41:36 UTC eterdb.com Llama Share 20

eterDB is a database system that allows for point-in-time recovery without full restore or downtime, tracking reads and writes to undo past mistakes. It can revert specific rows or columns to their previous state, even after other transactions have been written on top of them.

One resignation turned the embers of AI fear into a wildfire

45 pretext 2026-09-10 16:09:43 UTC interconnects.ai Llama Share 77

A recent AI researcher's resignation citing safety risks has sparked a viral discussion on existential risk and mass extinction, with some experts warning of potential dangers. The incident highlights the need for more transparency and caution in AI development to mitigate risks.

How we manage and engage with our horses shapes their personality

45 thunderbong 2026-09-10 01:57:32 UTC utu.fi Llama Share 16

A new study reveals that horse personality is influenced by their environment, including housing, riding frequency and quality of human interaction. The findings suggest that everyday management decisions can shape a horse's personality and welfare.

Show HN: Syq – copy files between machines fast (better than rsync)

41 greaber 2026-09-10 15:01:27 UTC greaber.github.io Llama Share 51

The tool allows copying, reorganizing and removing files across machines using rsync protocol. It supports scripting with JSON API or Python SDK, and can be used locally without an SSH server or incoming network port.

Show HN: I couldn't afford interview prep, so I built a free alternative

41 cdnsteve 2026-09-10 14:10:02 UTC learningto.co Llama Share 54

This is a 2Sum problem, where you need to find two numbers in an array that add up to a target value. The solution involves using a hash table or dictionary to store the indices of the numbers as they are encountered, allowing for efficient lookups and avoiding duplicates.

A Vacuum Diode for Make: Magazine

40 luu 2026-09-10 23:56:32 UTC nickpoole.me Llama Share 5

The author built a diode tube from scratch, using the pinch method to create a vacuum seal and documenting the process for Make: Magazine. The finished tube was successfully evacuated and tested, producing a beautiful glow of Tungsten light.

Hepburn Romanization: How to Read Japanese in the Latin Alphabet

39 miuraboy 2026-09-10 09:13:48 UTC fink-translate.com Llama Share 75

The Japanese government has made Hepburn romanization the official national standard, replacing Kunrei-shiki. This system prioritizes pronunciation for English speakers and is used in passports, road signs, train stations, textbooks, and the internet.

SystemIO conflicts are not firmware bugs

38 haeseong 2026-09-10 12:07:11 UTC codon.org.uk Llama Share 6

The ACPI (Advanced Configuration and Power Interface) specification defines a hardware abstraction layer that allows for platform independence, but its implementation can sometimes conflict with Linux drivers. This is not necessarily a firmware bug, as the ACPI approach provides more flexibility and safety features than directly accessing hardware.

The Feminist Was a Spy

32 mooreds 2026-09-10 13:03:51 UTC uscpublicdiplomacy.org Full Share 52

The CPD Blog is intended to stimulate dialog among scholars and practitioners from around the world in the public diplomacy sphere. The opinions represented here are the authors' own and do not necessarily reflect CPD's views. For blogger guidelines, click here.

Detailed report on the use of solar geoengineering

25 coloneltcb 2026-09-10 16:08:54 UTC technologyreview.com Llama Share 8

A San Francisco nonprofit, Reflective, has published a detailed roadmap for solar geoengineering research to inform decisions about using reflective particles in the stratosphere. The report aims to reduce uncertainty and cost estimates for conducting outdoor experiments.

Show HN: See Sounds on Your Webcam

23 jimhi 2026-09-10 14:43:49 UTC soundmap.darebuild.com Llama Share 7

To estimate localization, keep the camera still and use a microphone with visible movement while clapping, tapping, or speaking. Camera settings include horizontal view degrees and mic rotation relative to the camera for accurate results.

AI Doomlord Jacob Coxon's Media Tour Has Begun

23 jjj123 2026-09-10 13:21:50 UTC gizmodo.com Full Share 18

Ode to Metadata

22 surprisetalk 2026-09-10 14:24:47 UTC autodidacts.io Llama Share 2

The author reflects on the importance of metadata in preserving data and information over time, citing examples from songwriting and software development. They argue that saving metadata helps prevent loss of context and facilitates tracking changes, protecting against lawsuits, and adding value to projects.

The first drink-driving conviction may have happened in London

21 beardyw 2026-09-10 07:29:21 UTC ianvisits.co.uk Llama Share 40

A London taxi driver, George Smith, was convicted of drink-driving in 1897 after crashing his electric cab. He was fined 20 shillings for being drunk while driving and pleaded guilty to the charge.

From Front Panel to Program: Thinking Like a PDP-8

19 atan2 2026-09-10 17:30:33 UTC pikuma.com Llama Share 5

The PDP-8 is a classic minicomputer that teaches traditional digital electronics and computer architecture. It uses 12-bit words, has a small instruction set, and relies on an accumulator for arithmetic operations.

I build a mechanical watch face: a real gear train for a watch with no gears

19 tomasslavicek 2026-09-10 15:35:36 UTC myday24.com Llama Share 9

A watch designer creates openworked mechanical faces for Garmin, solving complex gear ratios and positions to achieve a realistic look. The design process involves testing each movement as a machine before adding finishing touches like polish and color.

Finding Slow Code with Wrapture

19 lumpa 2026-09-10 09:12:22 UTC grahamdumpleton.me Llama Share 9

The author analyzed the slow /order endpoint of a Flask shop, using wrapture instrumentation to measure time spent by each layer. The results showed that the ledger accounts for most of the service's and view's time, indicating self-time is an operation's duration minus its observed children.

What Comes After Git

17 steveklabnik 2026-09-10 17:41:51 UTC ersc.io Llama Share 4

East River Source Control is working on a next-generation version control system, building upon the existing Git protocol but with custom storage engine. The goal is to provide reliable and scalable source control management for large-scale organizations.

Show HN: Is this photo edited? Client-side image forensics

17 trivsamt 2026-09-10 11:25:19 UTC vajba.com Llama Share 7

The article discusses image authenticity and AI detection, stating that while algorithms can identify suspicious evidence, they are unreliable and should not be used as proof of authenticity. A more reliable method is cryptographic content provenance (C2PA) verification.

The Magic Behind Cubacadabra

16 andrewfromx 2026-09-10 18:01:47 UTC andrewarrow.dev Llama Share 7

The author is moving the core logic of a game from separate implementations in Swift, Kotlin, and JavaScript to a shared Rust codebase. This will allow for easier maintenance and updates across different platforms.

Astra for Coding: Why Are We Doing This Again?

16 tomduncalf 2026-09-10 16:06:29 UTC lucumr.pocoo.org Llama Share 11

The author is skeptical about the current state of AI engineering, specifically with regards to models like Astra, which they believe are "involutionary" and prioritize token efficiency over readability and maintainability. The model's tendency to produce code that is not human-readable has led to a significant increase in code output, but also raises concerns about its reliability and trustworthiness.

Who Dung It? (Turdle.fun)

16 nb_quant 2026-09-10 14:01:15 UTC turdle.fun Full Share 20

Hints compare overall size in a normal posture, including substantial tails and limbs. Bigger, smaller, or similar.

Serverless DTLS

13 mlhpdx 2026-09-10 15:50:30 UTC proxylity.com Llama Share 25

Proxylity's DTLS Listeners add encryption and authentication to UDP applications without changing the datagram transport model. They support DTLS 1.2 or 1.3 sessions, resuming established connections with session tickets for improved performance.