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Compiling a Lisp: Lambda lifting

news.ycombinator.com Max Bernstein 2025-12-02 18:35:03

first – previous EDIT: /u/thunderseethe correctly points out that this is closure conversion, not lambda lifting, so I have adjusted the post title from “lambda lifting” to “closure conversion” accordingly. Thanks! I didn’t think this day would come, but I picked up the Ghuloum tutorial (PDF) again and I got a little bit further. There’s just one caveat: I have rewritten the implementation in Python. It’s available in the same repo in compiler.py. It’s brief, coming in at a little over 300 LOC

Topics: bound closure expr free self

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Type (YC W23) is hiring a founding engineer to build an AI-native doc editor

news.ycombinator.com Unknown 2025-12-02 18:19:25

About Type and the Role Type is an AI-native document editor. Our mission is to help people communicate confidently. We believe that writing is and will always be the backbone of clear thinking and effective communication, especially in the AI era. Tools like Type free writers up to do more high-level thinking – exploring more ideas before coming to a conclusion, testing lots of approaches to expressing a message, and arguing with the AI about the oxford comma. We're backed by Y Combinator a

Topics: applications building editing experience product

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Compiling a Lisp: Lambda Lifting

news.ycombinator.com Max Bernstein 2025-12-03 00:35:03

first – previous I didn’t think this day would come, but I picked up the Ghuloum tutorial (PDF) again and I got a little bit further. There’s just one caveat: I have rewritten the implementation in Python. It’s available in the same repo in compiler.py. It’s brief, coming in at a little over 300 LOC + tests (compared to the C version’s 1200 LOC + tests). I guess there’s another caveat, too, which is that the Python version has no S-expression reader. But that’s fine: consider it an exercise fo

Topics: bound closure expr free self

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Best Resistance Bands of 2025

cnet.com See Full Bio 2025-12-02 18:45:00

Resistance bands are usually made out of latex, but there are some that are latex-free and some that come with a fabric cover to prevent injury if it snaps. Resistance bands come in light, medium and heavy weights. The tension weight will vary per brand, but this is how they are usually labeled. There are different types of resistance bands that vary in length and style. Some come in closed loops, some with handles and then there are mini bands. CNET staff -- not advertisers, partners or busi

Topics: band bands latex lbs resistance

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We found stuff AI is pretty good at

theverge.com Victoria Song 2025-12-02 22:00:00

is a senior reporter focusing on wearables, health tech, and more with 13 years of experience. Before coming to The Verge, she worked for Gizmodo and PC Magazine. Tech companies keep telling everyone that this or that AI feature is going to change everything. But when you press them for examples, real, concrete examples of how those AI tools should be used, the answers tend to be lackluster. Sometimes AI tools feel so open-ended, it’s hard to know where to start or what the best way to use them

Topics: ai examples love tools verge

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Abogen – Generate audiobooks from EPUBs, PDFs and text

news.ycombinator.com Unknown 2025-12-02 16:56:14

abogen Abogen is a powerful text-to-speech conversion tool that makes it easy to turn ePub, PDF, or text files into high-quality audio with matching subtitles in seconds. Use it for audiobooks, voiceovers for Instagram, YouTube, TikTok, or any project that needs natural-sounding text-to-speech, using Kokoro-82M. Demo demo.mp4 This demo was generated in just 5 seconds, producing ∼1 minute of audio with perfectly synced subtitles. To create a similar video, see the demo guide. How to install?

Topics: abogen add files install text

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Amazon’s rocky Alexa+ launch might justify Apple’s slow pace with next-gen Siri

9to5mac.com Zac Hall 2025-12-02 15:53:51

Amazon has finally started rolling out Alexa+, its oft-delayed overhaul of the Alexa voice assistant built on large language model technology. However, Alexa+ shows how difficult it is to replace a mature voice assistant with generative AI, especially when users expect instant, consistent results for simple tasks. It’s a real reality check on the notion that Amazon has managed to release something Apple promised and hasn’t shipped. Alexa+, available as an limited preview on select Echo devices,

Topics: alexa amazon apple new siri

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From terabytes to insights: Real-world AI obervability architecture

venturebeat.com Pronnoy Goswami 2025-12-02 16:15:00

Want smarter insights in your inbox? Sign up for our weekly newsletters to get only what matters to enterprise AI, data, and security leaders. Subscribe Now Consider maintaining and developing an e-commerce platform that processes millions of transactions every minute, generating large amounts of telemetry data, including metrics, logs and traces across multiple microservices. When critical incidents occur, on-call engineers face the daunting task of sifting through an ocean of data to unravel

Topics: ai context data logs telemetry

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Mexico to US livestock trade halted due to screwworm spread

news.ycombinator.com Unknown 2025-12-02 10:30:49

(Washington, D.C., July 9, 2025)- Yesterday, Mexico’s National Service of Agro-Alimentary Health, Safety, and Quality (SENASICA) reported a new case of New World Screwworm (NWS) in Ixhuatlan de Madero, Veracruz in Mexico, which is approximately 160 miles northward of the current sterile fly dispersal grid, on the eastern side of the country and 370 miles south of the U.S./Mexico border. This new northward detection comes approximately two months after northern detections were reported in Oaxaca

Topics: border mexico new nws usda

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Mexico to US Livestock Trade halted due to Screwworm spread

news.ycombinator.com Unknown 2025-12-02 16:30:49

(Washington, D.C., July 9, 2025)- Yesterday, Mexico’s National Service of Agro-Alimentary Health, Safety, and Quality (SENASICA) reported a new case of New World Screwworm (NWS) in Ixhuatlan de Madero, Veracruz in Mexico, which is approximately 160 miles northward of the current sterile fly dispersal grid, on the eastern side of the country and 370 miles south of the U.S./Mexico border. This new northward detection comes approximately two months after northern detections were reported in Oaxaca

Topics: border mexico new nws usda

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Our European search index goes live

news.ycombinator.com Unknown 2025-12-02 02:12:47

We’ve started delivering search results from our new European-based search index to Ecosia users! This will help us build the kind of ethical and fair internet we believe in. Last year we launched European Search Perspective (EUSP) , a joint venture with Qwant. The launch marked a big step forward in our journey towards tech independence and digital sovereignty for Europe. Now, we’ve taken the next step: our users in France are receiving a portion of their search results directly from EUSP’s o

Topics: europe eusp index search tech

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EFL Championship Soccer: Stream Southampton vs. Wrexham Live From Anywhere

cnet.com See Full Bio 2025-12-02 15:30:03

Southampton return to life in the Championship on Saturday, as they take on newly promoted Wrexham in this intriguing opening-weekend clash at St Mary's. Below, we'll outline the best live TV streaming services to use to watch the game as it happens, wherever you are in the world, and how to use a VPN if the match isn't available where you are. The Saints endured a torrid campaign last season, finishing rock bottom of the English Premier League after working their way through three different m

Topics: championship sports streaming vpn wrexham

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Backpropagating through a maze with candle and WASM

news.ycombinator.com Unknown 2025-11-29 12:51:22

Loading WASM module... Width: Height: Wall Density: Learning Rate: Max Steps: Generate & Optimize This demo uses gradient descent to solve a discrete maze. Try playing with the hyperparameters to see how they affect the optimization process! No neural network involved: logits are directly optimized, from a random initialization, for each maze. This runs entirely on your local device, thanks to candle and Rust's support for WebAssembly. You can disconnect from the Internet after loading this

Topics: action position probability s_t text

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Truth Social’s New AI Chatbot Is Donald Trump’s Media Diet Incarnate

wired.com Guthrie Scrimgeour 2025-12-02 21:20:48

When I ask the new Truth Social AI chatbot about navigating bias in the media ecosystem, it gives what I view as pretty reasonable advice. “Diversify your sources,” it responds. “Rely on news outlets across the political spectrum, including those from both left-leaning and right-leaning perspectives.” This is advice that the AI itself may not be taking to heart. For instance, to come to the above answer it cites five sources, four of which are Fox News articles. The fifth, inexplicably, is a 4

Topics: ai perplexity search sources truth

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Texas prepares for war as invasion of flesh-eating flies appears imminent

arstechnica.com Unknown 2025-12-03 02:46:32

Texas is gearing up for war as a savage, flesh-eating fly appears poised for a US invasion and is expanding its range of victims. On Friday, the Texas Department of Agriculture announced the debut of TDA Swormlure, a synthetic bait designed to attract the flies with a scent that mimics open flesh wounds, which are critical to the lifecycle of the fly, called the New World Screwworm. The parasite exploits any open wound or orifice on a wide range of warm-blooded animals to feed its ravenous spaw

Topics: animals flesh flies screwworm texas

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For giant carnivorous dinosaurs, big size didn’t mean a big bite

arstechnica.com Unknown 2025-12-03 03:06:25

When a Spinosaurus attacked a T. rex in Jurassic Park III, both giant carnivores tried to finish the fight with one powerful bite of their bone-crushing jaws. The Spinosaurus won, because when the movie was being made back in the early 2000s, fossil discoveries suggested it was the largest carnivorous dinosaur that ever lived. But new research provides evidence that size and weight didn’t always create a powerful bite. “The Spinosaurus and the T. rex didn’t live at the same time at the same con

Topics: carnivorous dinosaurs giant rex spinosaurus

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Truth Social's New AI Chatbot Is Donald Trump's Media Diet Incarnate

wired.com Guthrie Scrimgeour 2025-12-03 03:20:48

When I ask the new Truth Social AI chatbot about navigating bias in the media ecosystem, it gives what I view as pretty reasonable advice. “Diversify your sources,” it responds. “Rely on news outlets across the political spectrum, including those from both left-leaning and right-leaning perspectives.” This is advice that the AI itself may not be taking to heart. For instance, to come to the above answer it cites five sources, four of which are Fox News articles. The fifth, inexplicably, is a 4

Topics: ai perplexity search sources truth

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The War for the Web Has Begun

gizmodo.com Luc Olinga 2025-12-03 22:54:30

A high-stakes war has just broken out over the future of the internet. In one corner is Cloudflare, a giant of web infrastructure that acts as a gatekeeper for a huge portion of online traffic. In the other is Perplexity, a darling of the AI world, a search engine threatening to upend Google’s dominance. The accusation is explosive: Cloudflare claims Perplexity is a bad actor, a rogue bot that ignores the internet’s oldest rules to secretly scrape data from websites that have explicitly told it

Topics: ai bot cloudflare perplexity web

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Join Our Next Livestream: What GPT-5 Means for ChatGPT Users

wired.com Reece Rogers 2025-12-03 22:25:10

Few recent software releases have been as hyped as OpenAI’s launch of its GPT-5 model. “GPT-5 is the first time that it really feels like talking to an expert in any topic, like a PhD level expert,” said CEO Sam Altman in a recent press briefing. Is this new release as big of an upgrade as OpenAI claims? What do these changes actually mean for ChatGPT users? WIRED reporters are currently testing this newest drop from OpenAI, and seeing how GPT-5’s ability to write, code, and perform other tasks

Topics: expert gpt openai subscriber wired

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Programming with AI: You're Probably Doing It Wrong

news.ycombinator.com Ariejan De Vroom 2025-12-04 00:26:45

Programming with AI: You're Probably Doing It Wrong 2025 is the year of Artificial Intelligence. With GPT-5 just released, many developers will re-evaluate their use of large language models for assisting in their daily work. I’m here to tell you: you’re probably doing it wrong. And you’re missing out on the real power that AI assisted development can give you. What “doing it wrong” looks like Let’s kick off with a (non-exhaustive) list of symptoms you’re using your AI coding assistant wrong

Topics: agent ai code context llm

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‘Weapons’ Once Had a Whole Chapter About That Crucial, Mystery Character

gizmodo.com Germain Lussier 2025-12-04 08:15:34

Weapons is a film filled with huge secrets and reveals. Secrets and reveals that were very carefully talked around and avoided in the marketing. But now that the film is in theaters, we can talk about them, and in terms of arguably the biggest reveal, writer-director Zack Cregger spoke to us about the different ways he approached it. We’re about to dive into some of Weapons’ biggest spoilers, so if you haven’t seen it yet, be aware. One of Weapons’ biggest reveals comes right at the beginning.

Topics: alex film gladys just weapons

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AI must RTFM: Why tech writers are becoming context curators

news.ycombinator.com Fabrizio Ferri Benedetti 2025-12-04 12:04:40

AI must RTFM: Why technical writers are becoming context curators I’ve been noticing a trend among developers that use AI: they are increasingly writing and structuring docs in context folders so that the AI powered tools they use can build solutions autonomously and with greater accuracy. They now strive to understand information architecture, semantic tagging, docs markup. All of a sudden they’ve discovered docs, so they write more than they code. Because AI must RTFM now. It’s docs-driven d

Topics: ai context docs technical writers

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What founders need to know before choosing their exit — straight from Jai Das and Roseanne Wincek — at TechCrunch Disrupt 2025

techcrunch.com Techcrunch Events 2025-12-04 17:30:00

Startups face more exit options — and more uncertainty — than ever before. That’s why we’re bringing this essential conversation to the Going Public Stage at TechCrunch Disrupt 2025, happening October 27–29 in San Francisco’s Moscone West. Whether you’re already eyeing a liquidity event or just starting to scale, this is your chance to hear what top VCs are looking for and how to set your company up for long-term success. Two of the best in the business — Roseanne Wincek of Renegade Partners an

Topics: conversation disrupt exit founder founders

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Amtrak NextGen Acela Debuts on August 28

news.ycombinator.com Beth Toll 2025-12-05 02:30:23

A new era of high-speed rail to begin between Boston and Washington, DC WASHINGTON – All aboard the future of East Coast travel! Starting Thursday, Aug. 28, customers can travel on Amtrak’s NextGen Acela – America’s high-speed train – connecting the Northeast Corridor between Washington, D.C., New York City, and Boston. 🛤️ This historic launch introduces: More trains : 28 brand-new trains entering service through 2027 : 28 brand-new trains entering service through 2027 More seats : 27% more

Topics: acela amtrak new nextgen trains

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I used Perplexity to make a restaurant reservation - now I'm wondering if Google is holding us back

zdnet.com Artie Beaty 2025-12-05 15:30:17

Tang Ming Tung/Getty Images ZDNET's takeaways Perplexity's new feature lets you make a restaurant reservation straight through OpenTable. The feature uses OpenTable's system, so you don't have to trust the AI to do it for you. Instead of navigating between apps or tabs to find a restaurant and then book a table, Perplexity handles everything. Finding the perfect restaurant and making a reservation just got a whole lot easier thanks to a new feature in Perplexity. The chatbot (which ZDNET's

Topics: ai new perplexity reservation restaurant

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Exit Tax: Leave Germany before your business gets big

news.ycombinator.com Oliver Eidel 2025-12-05 05:06:50

Here’s an interesting take on Germany’s exit tax, which I have written about before: Leave Germany before your business gets big. What do I mean by that? I mean that once you’re a business owner in Germany and your business has reached a certain size, you are essentially barred from ever moving out of the country again. Crazy, right? I think it’s also pretty crazy that no one really talks about this. This is, quite literally, erecting a “Berlin Wall” around German entrepreneurs, forcing them

Topics: business exit germany profitable tax

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Cursed Knowledge

news.ycombinator.com Unknown 2025-12-05 11:34:52

50 extra packages are cursed There is a user in the JavaScript community who goes around adding "backwards compatibility" to projects. They do this by adding 50 extra package dependencies to your project, which are maintained by them.

Topics: 50 adding backwards community extra

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Immich – Cursed Knowledge

news.ycombinator.com Unknown 2025-12-05 17:34:52

50 extra packages are cursed There is a user in the JavaScript community who goes around adding "backwards compatibility" to projects. They do this by adding 50 extra package dependencies to your project, which are maintained by them.

Topics: 50 adding backwards community extra

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Firefly Aerospace soars over 30% in market debut to land at $8.5 billion valuation

cnbc.com Samantha Subin 2025-12-06 08:13:36

Firefly’s CEO Jason Kim reacts during the company's IPO at the Nasdaq MarketSite in New York City, U.S., August 7, 2025. Firefly Aerospace jumped more than 34% in its Nasdaq debut on Thursday after pricing shares above its expected range. The stock closed at $60.35, valuing the company at roughly $8.5 billion. Shares initially opened at $70 under the ticker symbol FLY. Space technology has gained momentum in recent years as companies such as Elon Musk's SpaceX amass more funding and governmen

Topics: company expected firefly million shares

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Heretic and Hexen have received a surprise remaster from Nightdive Studios

engadget.com Unknown 2025-12-06 08:57:47

Nightdive Studios and id Software have announced a surprise remaster of fantasy shooters Heretic and Hexen. The games are now available for modern consoles in a new release, dubbed Heretic + Hexen, that includes support for co-op, cross-platform multiplayer and community-published mods. Heretic + Hexen combines Heretic: Shadow of the Serpent Riders, Hexen: Beyond Heretic and Hexen: Deathkings of the Dark Citadel into a single bundle. On top of making the updates necessary to get the games runni

Topics: games heretic hexen software xbox

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Latest Tech News

Compiling a Lisp: Lambda lifting

Type (YC W23) is hiring a founding engineer to build an AI-native doc editor

Compiling a Lisp: Lambda Lifting

Best Resistance Bands of 2025

We found stuff AI is pretty good at

Abogen – Generate audiobooks from EPUBs, PDFs and text

Amazon’s rocky Alexa+ launch might justify Apple’s slow pace with next-gen Siri

From terabytes to insights: Real-world AI obervability architecture

Mexico to US livestock trade halted due to screwworm spread

Mexico to US Livestock Trade halted due to Screwworm spread

Our European search index goes live

EFL Championship Soccer: Stream Southampton vs. Wrexham Live From Anywhere

Backpropagating through a maze with candle and WASM

Truth Social’s New AI Chatbot Is Donald Trump’s Media Diet Incarnate

Texas prepares for war as invasion of flesh-eating flies appears imminent

For giant carnivorous dinosaurs, big size didn’t mean a big bite

Truth Social's New AI Chatbot Is Donald Trump's Media Diet Incarnate

The War for the Web Has Begun

Join Our Next Livestream: What GPT-5 Means for ChatGPT Users

Programming with AI: You're Probably Doing It Wrong

‘Weapons’ Once Had a Whole Chapter About That Crucial, Mystery Character

AI must RTFM: Why tech writers are becoming context curators

What founders need to know before choosing their exit — straight from Jai Das and Roseanne Wincek — at TechCrunch Disrupt 2025

Amtrak NextGen Acela Debuts on August 28

I used Perplexity to make a restaurant reservation - now I'm wondering if Google is holding us back

Exit Tax: Leave Germany before your business gets big

Cursed Knowledge

Immich – Cursed Knowledge

Firefly Aerospace soars over 30% in market debut to land at $8.5 billion valuation

Heretic and Hexen have received a surprise remaster from Nightdive Studios

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