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Compiling a Lisp: Lambda lifting

news.ycombinator.com Max Bernstein 2025-12-02 00:35:03

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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Compiling a Lisp: Lambda Lifting

news.ycombinator.com Max Bernstein 2025-12-02 06:35:03

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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How to Watch Borussia Dortmund vs. Juventus From Anywhere for Free: Stream Preseason Friendly Soccer

cnet.com See Full Bio 2025-12-02 03:30:04

Italian giant Juventus concludes its preparations for the new Serie A campaign with a tough friendly fixture in Germany today against Bundesliga giants Borussia Dortmund. Below, we'll outline the best live TV streaming services to watch every match of the tournament as it happens, wherever you are in the world. We'll also explain how to use a VPN if the match isn't available where you are, along with a full match list. Juventus finished fourth in Serie A last term and will be looking to put it

Topics: dazn dortmund juventus streaming vpn

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Scottish Premiership Soccer: Stream Rangers vs. Dundee Live From Anywhere

cnet.com See Full Bio 2025-12-01 21:55:00

The Rangers will be looking to claim their first win of the new Scottish Premiership season as they host Dundee in their first home match of the season at Ibrox. 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 hosts kicked off their campaign last Saturday with an underwhelming 1-1 draw against Motherwell, but followed that up with a convincing 3-0

Topics: dundee plus sports streaming vpn

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This Week’s ‘Foundation’ Took a Killer Spy-Fi Turn

gizmodo.com Cheryl Eddy 2025-12-03 04:30:49

Foundation is nearing the halfway point of season three. Episode five, “Where Tyrants Spend Eternity,” began to show us how Gaal Dornick (Lou Llobell) hopes to gain an advantage over the sinister Mule (Pilou Asbæk). Her plan tapped into a much-loved trope that Star Wars series Andor also made excellent use of: sci-fi spycraft. “Where Tyrants Spend Eternity” is also tense throughout and ends up involving a horrific, large-scale tragedy (another Andor similarity), building to a final scene that t

Topics: dawn empire foundation gaal tarisk

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How Wikipedia is fighting AI slop content

theverge.com Emma Roth 2025-12-03 04:30:47

is a news writer who covers the streaming wars, consumer tech, crypto, social media, and much more. Previously, she was a writer and editor at MUO. Posts from this author will be added to your daily email digest and your homepage feed. With the rise of AI writing tools, Wikipedia editors have had to deal with an onslaught of AI-generated content filled with false information and phony citations. Already, the community of Wikipedia volunteers has mobilized to fight back against AI slop, somethi

Topics: ai foundation generated wikimedia wikipedia

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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 2025-12-03 23:30:00

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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Best Wireless Headphones (2025): Tested Over Many Hours

wired.com Parker Hall 2025-12-04 09:33:00

Other Wireless Headphones We’ve Tested Wireless headphones are the default these days, and there are roughly 1 gazillion of them (and counting). We do our best to test them all, but not everything we test can make the big list. Here are some other good options worth trying. Sony WH-1000XM5 for $300-348: Sony's XM5 (9/10, WIRED Recommends) remain a top headphone, even after being supplanted by the fancier XM6. For a fairly sizable price reduction, you'll get still-fabulous noise-canceling tech,

Topics: canceling noise recommends sound wired

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4 apps you should use instead of Google News

androidauthority.com Unknown 2025-12-04 17:00:17

Andy Walker / Android Authority While Google News is a popular choice, its user interface and limited customization options might not be for everyone. I used the app for a long time, but I eventually moved on to something better. After trying countless alternatives, I found a few that offer a more personalized and streamlined experience. Some of these apps provide a highly tailored experience, while others let you get to the gist of a story much faster. While I’ve listed my favorite first, the

Topics: different feedly flipboard ground news

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The best streaming deals: Save on YouTube TV, HBO Max, Disney+ and others

engadget.com Unknown 2025-12-04 16:01:26

If you’ve been shocked by how much you spend on streaming services lately, you’re not alone. Companies like Netflix, Disney, Max and others have been consistently raising prices to the point where you may question if streaming is even worth it anymore. We at Engadget still think it is, but we also think you should be smart with your money — and that’s where streaming deals come in. Yes, it is possible to get discounts on services like Peacock and Paramount+, even if those deals aren’t as common

Topics: bundle hulu month percent streaming

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I replaced my Sonos soundbar for one with detachable rear speakers - and it's worth it

zdnet.com Christian De Looper 2025-12-04 21:00:22

JBL Bar 1000MK2 ZDNET's key takeaways The JBL Bar 1000MK2 includes a soundbar, two detachable rear speakers, and an external subwoofer for $1,200. It's a versatile system, with powerful audio performance suitable for large rooms. It's not an ideal option for people who want permanent rear speakers. $1,199.95 at Walmart $1,199.95 at Crutchfield $1,199.95 at JBL.com more buying choices The original JBL Bar 1000 made a compelling case for itself as a versatile soundbar for those who wanted the o

Topics: bar jbl soundbar speakers surround

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New executive order puts all grants under political control

news.ycombinator.com Unknown 2025-12-04 21:37:12

On Thursday, the Trump administration issued an executive order asserting political control over grant funding, including all federally supported research. The order requires that any announcement of funding opportunities be reviewed by the head of the agency or someone they designate, which means a political appointee will have the ultimate say over what areas of science the US funds. Individual grants will also require clearance from a political appointee and "must, where applicable, demonstra

Topics: control funding grants order political

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New executive order puts all grants under political control

arstechnica.com Unknown 2025-12-04 23:56:33

On Thursday, the Trump administration issued an executive order asserting political control over grant funding, including all federally supported research. The order requires that any announcement of funding opportunities be reviewed by the head of the agency or someone they designate, which means a political appointee will have the ultimate say over what areas of science the US funds. Individual grants will also require clearance from a political appointee and "must, where applicable, demonstra

Topics: control funding grants order political

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The Best Colored Noise for Sleep (2025)

wired.com Julia Forbes 2025-12-05 09:12:40

As a certified sleep science coach and mattress tester of five years, I'm no stranger to soothing noises being part of many people's sleep hygiene arsenal. For some, the perfect soundtrack might be white noise. For others, it could be a different color entirely—sometimes streamed on their phone, but often courtesy of a sound machine. If your sound machine or app offers a variety of different colored sounds, how might you know what they mean, or which might be best for your brain? How Noise Is “

Topics: frequencies like noise sound white

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I swapped my Sonos soundbar for one with detachable rear speakers - genius or gimmick?

zdnet.com Christian De Looper 2025-12-06 04:19:00

JBL Bar 1000MK2 ZDNET's key takeaways The JBL Bar 1000MK2 includes a soundbar, two detachable rear speakers, and an external subwoofer for $1,200. It's a versatile system, with powerful audio performance suitable for large rooms. It's not an ideal option for people who want permanent rear speakers. $1,199.95 at Walmart $1,199.95 at B&H Photo-Video $1,199.95 at Crutchfield more buying choices The original JBL Bar 1000 made a compelling case for itself as a versatile soundbar for those who want

Topics: bar jbl soundbar speakers surround

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Verizon Promo Offers NFL Sunday Ticket Access at No Extra Cost

cnet.com See Full Bio 2025-12-07 16:50:56

It's still the NFL preseason, but ahead of the official 2025-2026 regular season kickoff in September, Verizon, a long-term partner of the league, is offering NFL Sunday Ticket to new and existing mobile and internet customers. You don't even need a paid subscription for YouTube TV or YouTube Primetime Channels. Verizon revived its Sunday Ticket on Us promo on Tuesday, and it will run through Sept. 23, along with an alternative option to get $200 off the sports package for a savings of up to $4

Topics: new nfl sunday ticket verizon

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Tornado Cash Developer Roman Storm Guilty on One Count in Federal Crypto Case

wired.com Joel Khalili 2025-12-08 00:27:55

Roman Storm, one of the developers of crypto anonymizing tool Tornado Cash, has been found guilty of conspiracy to operate an unlicensed money transmitting business by a jury in a court in New York. He faces a maximum sentence of five years in federal prison. In 2023, the US Department of Justice charged Storm with three violations: conspiracy to commit money laundering, conspiracy to violate sanctions, and conspiracy to operate an unlicensed money transmitting business. On Wednesday, at the e

Topics: crypto laundering money storm trial

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15 Best Bluetooth Speakers Our Testers Jammed With in 2025

wired.com Parker Hall 2025-12-08 09:37:27

The best Bluetooth speakers have a place near and dear to our hearts, even as we’ve seen smart speakers improving their sound and portability. By (mostly) forgoing Wi-Fi radios and voice assistants, Bluetooth speakers are ultraportable, able to venture into the world and withstand rugged conditions like a sandy beach or a steamy Airbnb jacuzzi. They provide worry-free connection to any smartphone, and the top options offer sound that meets or beats the average smart speaker. We've tested hundre

Topics: best bluetooth sound speakers ve

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WB Games’ best PC titles are in this $12 Humble bundle

theverge.com Brandon Russell 2025-12-08 09:39:51

Posts from this author will be added to your daily email digest and your homepage feed. The future of Warner Bros. Games is unclear, as it shut down several studios and canceled anticipated games earlier this year. But there’s no arguing that the company’s back catalog of titles is full of gems, many of which are in Humble’s great $12 bundle. Through August 27th, you can jump on this unbeatable deal that gets you 16 WB Games titles on Steam for just $12, with proceeds going to the Raiden Scienc

Topics: bundle deals email games titles

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The best soundbars of 2025: Expert tested and recommended

zdnet.com Christian De Looper 2025-12-08 14:49:15

Why we like it: If you're willing to spend the money for the best soundbar system you can get right now, and want something that comes with a subwoofer and surrounds all ready to go, then the Samsung HW-Q990F is the way to go. The system is powerful, immersive, and incredible sounding, and while it's far from cheap, it pushes the limits of what a soundbar can offer. Review: Samsung HQ-Q990F The Samsung HW-Q990F is pretty bulky, and for a reason. It has a 23 drivers built straight into it, with

Topics: audio hw q990f samsung soundbar

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Bose’s stylish SoundLink Home speaker is cheaper for the first time in months

theverge.com Brandt Ranj 2025-12-08 23:00:00

Audio quality is always going to be a speaker’s most important feature, but it doesn’t hurt if it looks nice too. In our tests, Bose’s SoundLink Home is a solid sounding, aesthetically pleasing portable Bluetooth speaker that you can currently pick up for $199.99 ($20 off) from Amazon, Best Buy, and Bose. The SoundLink Home’s aluminum band and fabric covering distinguish it from the plastic shells used for other speakers, and are likely to be the first things you notice. However, former Verge r

Topics: audio deals home soundlink speaker

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A New ‘Foundation’ Clip Digs Into Some Prickly Family Dynamics

gizmodo.com Cheryl Eddy 2025-12-09 04:00:42

When Foundation fans first met newlyweds Toran (Cody Fern) and Bayta (Synnøve Karlsen) Mallow, two things stood out: first, that last name, signifying Toran’s connection to season two hero Hober Mallow; second, the way their self-aware glamour made them very much resemble futuristic versions of the social media influencers we have today. But it was also apparent there was substance beneath the sparkle—and episode five, “Where Tyrants Spend Eternity,” explores that idea even more. io9 has an exc

Topics: bayta foundation mallow mule toran

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Yamaha’s New Soundbar Has More Up-Firing Dolby Atmos Speakers Than There Are ‘Fast and Furious’ Movies

gizmodo.com James Pero 2025-12-09 09:48:12

Sometimes more is better. Case in point: money. I could really use more money, and if you gave me more money, I’d be happy about that—I think most would agree with that sentiment, and if you don’t, I have a favor to ask. Speakers, like money, are also a thing you may want more of, and while they’re not as important as money, they’re important for your ears, and Yamaha is here to take your money in exchange for satisfying your ears in a very maximalist way. Yamaha’s True X Surround 90A soundbar

Topics: money soundbar speakers surround yamaha

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Syncable vs. non-syncable passkeys: Are roaming authenticators the best of both worlds?

zdnet.com David Berlind 2025-12-09 18:19:02

matejmo/Getty Images Like or not, a replacement for passwords -- known as passkeys -- is coming your way, if it hasn't already. The three big ideas behind passkeys are that they cannot be guessed in the way passwords often can (and are), the same passkey cannot be re-used across different websites and apps (the way passwords can), and you cannot be tricked into divulging your passkeys to malicious actors, often through techniques such as phishing, smishing, quishing, and malvertising. Also: Ho

Topics: bound device passkey passkeys roaming

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Here's How to Add a Background to Your Text Chats in iOS 26

cnet.com See Full Bio 2025-12-10 09:00:03

The iOS 26 beta brings chat backgrounds to Messages, giving a visual identifier for each chat so you can easily tell if you're messaging the right person or group. It's a nice quality-of-life update that can help you distinguish whether you're texting your family chat or your family chat minus your one uncle you don't get along with. Apple released the first public beta of iOS 26 on July 24, and that beta brought a new Liquid Glass design and other new features to the iPhones of developers and

Topics: apple background backgrounds chat image

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Clay confirms it closed $100M round at $3.1B valuation

techcrunch.com Marina Temkin 2025-12-10 23:12:06

In Brief Sales automation startup Clay has raised a $100 million Series C at a $3.1 billion valuation in a round led by CapitalG, confirming TechCrunch’s report from June. The financing follows a $1.25 billion Series B round from six months ago and a $1.5 billion Sequoia-led tender offer announced a couple of months ago, which allowed most employees to sell some of their shares. The latest deal brings Clay’s total funding to $204 million. Existing investors Meritech Capital, Sequoia Capital,

Topics: billion capital clay million round

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Verizon is offering a NFL Sunday Ticket subscription for free, if you qualify

androidauthority.com Unknown 2025-12-12 04:42:22

Andrew Grush / Android Authority TL;DR Verizon is offering the NFL Sunday Ticket free ($480 value) to users adding a new line or switching to Verizon Home Internet. Customers not making these changes can still save over $200 on the NFL Sunday Ticket through Verizon. Verizon customers can also grab limited free NFL game tickets via the My Verizon app on August 7. erizon recently drew some negative attention for removing loyalty discounts alongside a few minor fee increases, but this time, Big

Topics: free nfl sunday ticket verizon

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Apple TV+ is about to have two huge, unique sci-fi shows airing

9to5mac.com Ryan Christoffel 2025-12-12 04:57:57

Apple TV+ has become a go-to streamer for sci-fi fans, and very soon, there will be two huge—but very different—sci-fi epics airing at the same time: Foundation and Invasion. Invasion season 3 will join Foundation in current Apple TV+ sci-fi offerings Apple recently started airing Foundation season 3, which has been called “one of the best shows of the year and a must-watch show for all sci-fi fans.” Foundation seems to be gaining strong viewership too, regularly sitting at or near the top of

Topics: apple foundation invasion season tv

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I brought this portable Marshall speaker on vacation - and now my Bose is staying home

zdnet.com Jada Jones 2025-12-12 04:27:00

Marshall Middleton II ZDNET's key takeaways Marshall's Middleton II Bluetooth speaker is available in Black And Brass or Cream for $330. The Middleton II debuts with meaningful upgrades from its predecessor, spectacular sound, a stylish design, and 30 hours of battery life. Despite its long list of pros, this speaker is considerably more expensive than its competitors with similar features. $329.99 at Amazon $329.99 at B&H Photo-Video $329.99 at Crutchfield more buying choices There's a sea o

Topics: ii marshall middleton sound speaker

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Crack the code to startup traction with insights from Chef Robotics, NEA, and ICONIQ at TechCrunch Disrupt 2025

techcrunch.com Techcrunch Events 2025-12-12 09:30:00

Finding product-market fit isn’t a milestone — it’s a messy, make-or-break journey. And at TechCrunch Disrupt 2025, a founder who’s been through the fire and two investors who’ve helped startups hit escape velocity will break down how to do it right. On the Builders Stage, Rajat Bhageria (Founder & CEO, Chef Robotics), Ann Bordetsky (Partner, NEA), and Murali Joshi (Partner, ICONIQ) join forces to unpack the most critical — and elusive — phase in a startup’s life cycle. They’ll dive into smart

Topics: 2025 builders disrupt founder product

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Latest Tech News

Compiling a Lisp: Lambda lifting

Compiling a Lisp: Lambda Lifting

How to Watch Borussia Dortmund vs. Juventus From Anywhere for Free: Stream Preseason Friendly Soccer

Scottish Premiership Soccer: Stream Rangers vs. Dundee Live From Anywhere

This Week’s ‘Foundation’ Took a Killer Spy-Fi Turn

How Wikipedia is fighting AI slop content

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

Best Wireless Headphones (2025): Tested Over Many Hours

4 apps you should use instead of Google News

The best streaming deals: Save on YouTube TV, HBO Max, Disney+ and others

I replaced my Sonos soundbar for one with detachable rear speakers - and it's worth it

New executive order puts all grants under political control

New executive order puts all grants under political control

The Best Colored Noise for Sleep (2025)

I swapped my Sonos soundbar for one with detachable rear speakers - genius or gimmick?

Verizon Promo Offers NFL Sunday Ticket Access at No Extra Cost

Tornado Cash Developer Roman Storm Guilty on One Count in Federal Crypto Case

15 Best Bluetooth Speakers Our Testers Jammed With in 2025

WB Games’ best PC titles are in this $12 Humble bundle

The best soundbars of 2025: Expert tested and recommended

Bose’s stylish SoundLink Home speaker is cheaper for the first time in months

A New ‘Foundation’ Clip Digs Into Some Prickly Family Dynamics

Yamaha’s New Soundbar Has More Up-Firing Dolby Atmos Speakers Than There Are ‘Fast and Furious’ Movies

Syncable vs. non-syncable passkeys: Are roaming authenticators the best of both worlds?

Here's How to Add a Background to Your Text Chats in iOS 26

Clay confirms it closed $100M round at $3.1B valuation

Verizon is offering a NFL Sunday Ticket subscription for free, if you qualify

Apple TV+ is about to have two huge, unique sci-fi shows airing

I brought this portable Marshall speaker on vacation - and now my Bose is staying home

Crack the code to startup traction with insights from Chef Robotics, NEA, and ICONIQ at TechCrunch Disrupt 2025

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