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Requiem for a Hash Function, or: How I learned to love package maphash

news.ycombinator.com Unknown 2025-09-24 06:52:09

Requiem for a Hash Function, or: How I learned to love package maphash September 22, 2025 Zürich, Schweiz I am coming off from surgery right now and have some time on my hands, so I wanted to share a story about a learning experience. This post is a bit of a dual purpose one on a teachable moment as a software engineer — a chance to offer a retrospective from bad decisions and earn penance therefor. There is one episode that sticks out in my memory with a fair bit of shame: implementing the

Topics: hash maphash uint64 value zoo

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‘Avatar: The Way of Water’ Re-Release’s ‘Fire and Ash’ Preview Comes With a Very Silly Catch

gizmodo.com Cheryl Eddy 2025-09-29 05:55:43

With that blistering Avatar: Fire and Ash preview arriving this week, fans are shifting into extreme excitment mode over the December release. To capitalize on that, the previous film in James Cameron’s series, 2022’s Avatar: The Way of Water, will be bringing some Fire and Ash with it as part of its theatrical re-release next week—but there’s a catch. Sneak peeks at the much-anticipated new movie will play after The Way of Water screenings. But as Variety explains it, “Not every screening will

Topics: ash avatar play water way

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Improved Gemini 2.5 Flash and Flash-Lite

news.ycombinator.com Unknown 2025-10-01 13:20:56

Today, we are releasing updated versions of Gemini 2.5 Flash and 2.5 Flash-Lite, available on Google AI Studio and Vertex AI , aimed at continuing to deliver better quality while also improving the efficiency. Improvements in quality and speed for Gemini 2.5 Flash and 2.5 Flash Lite preview models compared to the current stable models The latest version of Gemini 2.5 Flash-Lite was trained and built based on three key themes: Better instruction following: The model is significantly better at

Topics: better flash gemini latest model

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Early Revolut backer invests in AI-focused finance software startup Light

cnbc.com Ryan Browne 2025-10-02 17:00:01

Danish startup Light is the latest in a series of European tech firms raising cash as venture capitalists search for the next big thing in artificial intelligence. Founded in 2022, Light develops software that uses AI to automate various functions that exist within businesses' finance teams, including accounting, bookkeeping and financial reporting. The Copenhagen-headquartered company told CNBC that it had raised $30 million in a Series A funding round led by Balderton Capital, an early inves

Topics: capital cash cnbc founder light

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Homeowner baffled after washing machine uses 3.6GB of internet data a day (2024)

news.ycombinator.com Alice Gibbs 2025-10-02 18:24:33

A tech-savvy San Francisco resident has sparked conversation online after he shared a perplexing discovery about his LG washing machine's seemingly voracious appetite for data on X (formerly Twitter). In a post with more than 7 million views, Johnie Lee shared a screenshot of his machine's data usage, which showed around 3.6GB of daily data usage. For context, 3GB of data is the rough equivalent of streaming high-definition video for an hour on a device. A spokesperson for LG told Newsweek: "L

Topics: data lg machine smart washing

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DARPA Going Hard on Insect-Sized Spy Robots

futurism.com Joe Wilkins 2025-10-03 05:08:49

Forget robot wolves and missile-deflecting satellites — those things are already becoming old news. Instead, future wars just might revolve around insect-size spy robots. A recent digest of present-day microbots by US national security magazine The National Interest breaks down the many machines currently in development by the US military and its associates. They include sea-based microdrones, cockroach-style surveillance bots, and even cyborg insects. Arguably the most refined program to date

Topics: autonomous darpa dash insect robobee

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Three crashes in the first day? Tesla’s robotaxi test in Austin.

arstechnica.com Unknown 2025-10-08 17:01:03

These days, Austin, Texas feels like ground zero for autonomous cars. Although California was the early test bed for autonomous driving tech, the much more permissive regulatory environment in the Lone Star State, plus lots of wide, straight roads and mostly good weather, ticked enough boxes to see companies like Waymo and Zoox set up shop there. And earlier this summer, Tesla added itself to the list. Except things haven't exactly gone well. According to Tesla's crash reports, spotted by Brad

Topics: crash crashes logged tesla waymo

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Tesla’s Robotaxis Have Already Gotten Into Numerous Accidents

futurism.com Victor Tangermann 2025-10-06 01:05:37

Tesla has been caught hiding details of three separate robotaxi accidents that happened since the launch of the service. As Electrek reports, the Elon Musk-led company reported the three crashes, which occurred in the early days of its pilot robotaxi service in Austin, to the National Highway Traffic Safety Administration (NHTSA.) At the time, the company’s robotaxi fleet of modified Model Y vehicles only consisted of “ten to 20” vehicles, according to Musk, which even had safety drivers sitti

Topics: crashes driver fleet robotaxi tesla

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Tesla's Robotaxis Have Already Gotten Into Numerous Accidents

futurism.com Unknown 2025-10-12 17:05:37

Tesla has been caught hiding details of three separate robotaxi accidents that happened since the launch of the service. As Electrek reports, the Elon Musk-led company reported the three crashes, which occurred in the early days of its pilot robotaxi service in Austin, to the National Highway Traffic Safety Administration (NHTSA.) At the time, the company's robotaxi fleet of modified Model Y vehicles only consisted of "ten to 20" vehicles, according to Musk, which even had safety drivers sitti

Topics: crashes driver fleet robotaxi tesla

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Rendezvous Hashing Explained (2020)

news.ycombinator.com Unknown 2025-10-11 15:36:10

Rendezvous hashing is an algorithm to solve the distributed hash table problem - a common and general pattern in distributed systems. There are three parts of the problem: Keys: unique identifiers for data or workloads Values: data or workloads that consume resources Servers: entities that manage data or workloads For example, in a distributed storage system, the key might be a filename, the value is the file data, and the servers are networked data servers that collectively store all of the f

Topics: hashing key rendezvous server servers

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Optimizing ClickHouse for Intel's 280 core processors

news.ycombinator.com Unknown 2025-10-14 20:46:03

This is a guest post from Jiebin Sun, Zhiguo Zhou, Wangyang Guo and Tianyou Li, performance optimization engineers at Intel Shanghai. Intel's latest processor generations are pushing the number of cores in a server to unprecedented levels - from 128 P-cores per socket in Granite Rapids to 288 E-cores per socket in Sierra Forest, with future roadmaps targeting 200+ cores per socket. These numbers multiply on multi-socket systems, such servers may consist of 400 and more cores. The paradigm of "m

Topics: cache hash memory optimization performance

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From Qubits to Qubucks: Quantum Digital Currency

computer.org Laurel Tweed 2025-10-15 04:41:00

Quantum computing is often discussed in terms of its potential to revolutionize scientific discovery and to challenge cryptographic paradigms [1], but it could also change our relationship with money. By using quantum states, quantum currency could solve the double-spending problem and address throughput issues associated with distributed ledgers (blockchain), paving the way for the digital cash of the future. Digital Banking vs. Digital Currency To understand quantum currency, we should first

Topics: cash currency digital quantum transactions

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Waymo is headed to Nashville in 2026

engadget.com Unknown 2025-10-15 12:08:07

Waymo is plotting a route for Tennessee, as it plans to bring its robotaxis to Nashville. The company expects to start autonomous driving operations in the city in the coming months before opening up to the public in 2026. At the outset, folks in the area will be able to hail a ride via the Waymo app. Down the line, Lyft will be able to match users with Waymo rides in Nashville. Waymo is currently up and running in five US cities: San Francisco (and other parts of the Bay Area), Los Angeles, P

Topics: able city human nashville waymo

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UUIDv47: Store UUIDv7 in DB, emit UUIDv4 outside (SipHash-masked timestamp)

news.ycombinator.com Unknown 2025-10-15 12:02:29

UUIDv47 - UUIDv7-in / UUIDv4-out (SipHash-masked timestamp) uuidv47 lets you store sortable UUIDv7 in your database while emitting a UUIDv4-looking façade at your API boundary. It does this by XOR-masking only the UUIDv7 timestamp field with a keyed SipHash-2-4 stream tied to the UUID’s own random bits. Header-only C (C89) · zero deps Deterministic, invertible mapping (exact round-trip) RFC-compatible version/variant bits (v7 in DB, v4 on the wire) Key-recovery resistant (SipHash-2-4, 128-b

Topics: key siphash uuid128_t v4 v7

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Bringing fully autonomous rides to Nashville, in partnership with Lyft

news.ycombinator.com Unknown 2025-10-15 16:10:45

We’re on our way to Music City! We’re excited to bring the magic of Waymo’s fully autonomous ride-hailing service to riders in Nashville, in partnership with Lyft. Our generalizable Waymo Driver has become even more capable as we’ve scaled to hundreds of thousands of fully autonomous rides each week across five major U.S. cities. We’ll start fully autonomous operations in Nashville in the coming months, and open to public riders next year. We’ll do so by pairing our world-leading technology and

Topics: autonomous lyft nashville riders waymo

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Lyft shares pop on Waymo deal to bring robotaxis to Nashville next year

cnbc.com Lora Kolodny 2025-10-15 21:38:36

A Waymo autonomous self-driving Jaguar electric vehicle is seen in Tempe, Arizona, on the outskirts of Phoenix, on September 15, 2025. Waymo has partnered with Uber to get its robotaxis into Atlanta and Austin, Texas. Now it's teaming up with Lyft for the first time in a commercial deal to enter Nashville next year. Lyft stock climbed 10% on the news. Riders in Nashville will be able to hail a Waymo robotaxi through the Waymo One app, and Lyft will add Waymo robotaxis to its platform over tim

Topics: 10 companies lyft nashville waymo

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Waymo to launch a robotaxi service in Nashville in 2026

theverge.com Andrew J. Hawkins 2025-10-15 21:00:00

is transportation editor with 10+ years of experience who covers EVs, public transportation, and aviation. His work has appeared in The New York Daily News and City & State. Posts from this author will be added to your daily email digest and your homepage feed. Waymo is bringing its robotaxis to Music City, USA. The Alphabet-owned company plans on launching its robotaxi service in Nashville in 2026. Customers will be able to hail a ride initially through the Waymo One app, and then later thro

Topics: company lyft nashville news waymo

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Lyft and Waymo are partnering to bring robotaxis to Nashville

techcrunch.com Kirsten Korosec 2025-10-15 21:05:00

Waymo has struck a deal with ride-hailing company Lyft to launch a robotaxi service in Nashville in 2026. The company said Wednesday it will begin testing its fleet of all-electric and autonomous Jaguar I-Pace vehicles in the Nashville area in the coming months and will open up the service to the public next year. The partnership agreement announced Wednesday comes as Waymo ramps up its robotaxi expansion from its initial commercial market of Phoenix to Atlanta, Austin, Los Angeles, and San Fr

Topics: company lyft nashville service waymo

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Amazfit just got the one Garmin feature I use every day - and now I'm conflicted

zdnet.com Matthew Miller 2025-10-18 17:25:00

Amazfit T-Rex 3 Pro ZDNET's key takeaways The Amazfit T-Rex 3 Pro is available for $400 The watch sports a LED flashlight, is available in two sizes, has a speaker and microphone for call and assistant support, and three weeks of battery life There is no support for subscription music services, wearable payment systems, and limited third party apps. View now at Us.amazfit Follow ZDNET: Add us as a preferred source on Google. If you've read any of my Garmin reviews over the past couple of yea

Topics: amazfit flashlight led pro rex

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Human writers have always used the em dash

news.ycombinator.com Unknown 2025-10-18 11:06:44

Pop CulturePop Culture Stop AI-Shaming Our Precious, Kindly Em Dashes—Please Human writers have always used the em dash. In fact, it’s the most human punctuation mark there is. Getty Images/Ringer illustration By Brian Phillips Aug. 20, 12:00 pm UTC • 7 min I stand before you today with violence in my heart. I do not come in peace. I come to obliterate, disparage, and destroy. In this fallen world of ours, there exist certain ideas that must be annihilated before goodness can flourish. I am he

Topics: ai dash dashes em writers

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Anne Rice Hated This Vampire Movie, but It's Actually a Bloody, Rock-Infused Cult Classic

cnet.com See Full Bio 2025-10-21 03:30:00

Vampires have captured the hearts and minds of audiences for over 100 years. From the original Dracula novel, to Abigail these monsters have delivered gore-soaked bloodbaths from creatures that only resemble humans. Novelist Anne Rice's vampire catapulted vampires to super stardom between her 1980s books, and the Tom Cruise/Brad Pitt adaptation of Interview With a Vampire in the '90s. However, her books extend far beyond Louis and Lestat's story. This movie is an adaptation of two novels and wh

Topics: akasha lestat vampire vampires world

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Google Maps wasn't loading in some regions due to an outage

engadget.com Unknown 2025-10-23 02:51:02

Google Maps suffered an outage that left the mobile version of the service unable to fully load its map or provide directions. Over 4,000 reports were filed on Downdetector since the outage started, and Google's Status Dashboard noted that the company was investigating an issue with the Maps SDK and Navigation SDK at 3:34PM ET. By 6:27PM ET, Google said the issue has been resolved and that it will publish an "analysis of this incident" once it has completed its internal investigation. At the pe

Topics: dashboard et google issue outage

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Hashed sorting is typically faster than hash tables

news.ycombinator.com Unknown 2025-10-22 07:03:21

Hashed sorting is typically faster than hash tables Problem statement: count the unique values in a large array of mostly-unique uint64s. Two standard approaches are: Insert into a hash table and return the number of entries. Sort the array, then count positions that differ from their predecessor. Hash tables win the interview ( O ( n ) O(n) O(n) vs O ( n log ⁡ n ) O(n \log n) O(nlogn)), but sorting is typically faster in a well-tuned implementation. This problem and its variants are the inn

Topics: hash ms radix sort µs

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Apple’s new Crossbody Strap makes more sense than we might think

9to5mac.com Ben Lovejoy 2025-10-27 09:10:57

I’ll freely admit to being one of the many people who viewed Apple’s new crossbody strap with some bemusement. Internet comments on it mostly use terms like “bizarre” or worse. But a new piece today suggests that many of us are misunderstanding Apple’s latest iPhone accessory, and that it does in fact have a valuable role … I once saw a meme which said that women want only two things in life: equality, and pockets. It’s the lack of the latter in women’s fashion which creates demand for this ty

Topics: apple carry fashion new women

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NotebookLM Can Now Make Flashcards and Quizzes to Help You Study

cnet.com See Full Bio 2025-10-30 00:13:52

If it wasn't obvious that NotebookLM is shaping up to be the ultimate AI tool for school, it should be now. And Google has more to share for the fall season. On Monday, Google announced its latest NotebookLM features, including the option to generate flashcards, quizzes, new reports and more. Brand-new audio formats for the popular Audio Overviews feature were also released just last week. What sets NotebookLM apart from other AI tools is that it will only rely on the source material you provi

Topics: flashcards google guide just notebooklm

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This Cult Classic Vampire Movie Is Ridiculously Underrated, and It's Free on Tubi

cnet.com See Full Bio 2025-10-31 01:15:03

Vampires have been popular on the silver screen ever since they burst onto film in 1922 with Nosferatu. Over the last 100+ years, myriad vampire flicks have stolen the hearts of audiences, from The Lost Boys to Abigail. Novelist Anne Rice's vampires have always been wickedly popular -- in particular because of the Tom Cruise/Brad Pitt blockbuster Interview With a Vampire -- but there is more to her world than just Louis and Lestat's story. Don't miss any of our unbiased tech content and lab-ba

Topics: akasha lestat vampire vampires world

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NPM debug and chalk packages compromised

news.ycombinator.com Written By 2025-10-31 13:37:57

Starting at September 8th, 13:16 UTC, our Aikido intel feed alerted us to a series packages being pushed to npm, which appeared to contain malicious code. These were 18 very popular packages, backslash (0.26m downloads per week) chalk-template (3.9m downloads per week) supports-hyperlinks (19.2m downloads per week) has-ansi (12.1m downloads per week) simple-swizzle (26.26m downloads per week) color-string (27.48m downloads per week) error-ex (47.17m downloads per week) color-name (191.71

Topics: _0x4225ce bitcoincash const function return

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My favorite Garmin smartwatch feature just came to Amazfit - and now I'm torn

zdnet.com Matthew Miller 2025-11-01 09:00:23

Amazfit T-Rex 3 Pro ZDNET's key takeaways The Amazfit T-Rex 3 Pro is available for $400 The watch sports a LED flashlight, is available in two sizes, has a speaker and microphone for call and assistant support, and three weeks of battery life There is no support for subscription music services, wearable payment systems, and limited third party apps. View now at Us.amazfit Follow ZDNET: Add us as a preferred source on Google. If you've read any of my Garmin reviews over the past couple of yea

Topics: amazfit flashlight led pro rex

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New Apple Card offer allows users to earn boosted cash back with Uber and Uber Eats

9to5mac.com Michael Burkhardt 2025-11-01 00:39:52

For a limited time, Apple is offering a boosted 5% cash back on Uber and Uber Eats, allowing users to earn some extra cash back on their rides, food delivery, and more. This offer runs through September 30th, and you’ll need to use your Apple Card with Apple Pay to earn this special cash back rate. Using the card number for your Apple Card won’t allow you to earn this cash back bonus. There’s a $500 spend cap for this cash back offer, allowing you to earn up to $25. Plus, all Apple Card users

Topics: apple card cash earn uber

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The Biden-Era Plan to Pay Travelers for Airline-Caused Delays Is Dead

cnet.com See Full Bio 2025-11-01 08:39:00

For a brief moment, it looked like US travelers might finally get automatic cash when an airline's own problems wrecked their plans. The Department of Transportation, under former President Joe Biden, drafted a rule requiring carriers to pay passengers at least $200 and up to $775 for the longest holdups. The compensation would cover meals, hotels, ground transport and rebooking when disruptions were within the airline's control. But no longer. On Sept. 5, the Trump administration's DOT offici

Topics: airline airlines cash compensation delay

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Latest Tech News

Requiem for a Hash Function, or: How I learned to love package maphash

‘Avatar: The Way of Water’ Re-Release’s ‘Fire and Ash’ Preview Comes With a Very Silly Catch

Improved Gemini 2.5 Flash and Flash-Lite

Early Revolut backer invests in AI-focused finance software startup Light

Homeowner baffled after washing machine uses 3.6GB of internet data a day (2024)

DARPA Going Hard on Insect-Sized Spy Robots

Three crashes in the first day? Tesla’s robotaxi test in Austin.

Tesla’s Robotaxis Have Already Gotten Into Numerous Accidents

Tesla's Robotaxis Have Already Gotten Into Numerous Accidents

Rendezvous Hashing Explained (2020)

Optimizing ClickHouse for Intel's 280 core processors

From Qubits to Qubucks: Quantum Digital Currency

Waymo is headed to Nashville in 2026

UUIDv47: Store UUIDv7 in DB, emit UUIDv4 outside (SipHash-masked timestamp)

Bringing fully autonomous rides to Nashville, in partnership with Lyft

Lyft shares pop on Waymo deal to bring robotaxis to Nashville next year

Waymo to launch a robotaxi service in Nashville in 2026

Lyft and Waymo are partnering to bring robotaxis to Nashville

Amazfit just got the one Garmin feature I use every day - and now I'm conflicted

Human writers have always used the em dash

Anne Rice Hated This Vampire Movie, but It's Actually a Bloody, Rock-Infused Cult Classic

Google Maps wasn't loading in some regions due to an outage

Hashed sorting is typically faster than hash tables

Apple’s new Crossbody Strap makes more sense than we might think

NotebookLM Can Now Make Flashcards and Quizzes to Help You Study

This Cult Classic Vampire Movie Is Ridiculously Underrated, and It's Free on Tubi

NPM debug and chalk packages compromised

My favorite Garmin smartwatch feature just came to Amazfit - and now I'm torn

New Apple Card offer allows users to earn boosted cash back with Uber and Uber Eats

The Biden-Era Plan to Pay Travelers for Airline-Caused Delays Is Dead

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