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How to Debug Chez Scheme Programs (2002)

news.ycombinator.com Unknown 2025-09-15 21:22:47

How to Debug Chez Scheme Programs R. Kent Dybvig August 2002 When a program fails to operate as it should, it is said to have a bug. A bug is the root cause of an observed behavior, such as failure to terminate, failure to perform some action, termination with an error message, or merely producing incorrect results. The process of debugging a program is one of finding all of the bugs and "exterminating" them. This process first requires feeding the program a representative set of test cases,

Topics: buggy db define error program

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The AI Layoffs Have Come for Freelance Marketplace Fiverr

gizmodo.com Aj Dellinger 2025-09-19 09:50:51

Fiverr, the online marketplace for freelancers, announced that it is laying off about 250 full-time staff members as part of an effort to transform itself into an “AI-first company.” The layoffs will affect about 30% of the company’s staff and are part of what CEO Micha Kaufman called a “painful reset” in a message to his staff, which he also posted on X—though certainly one that will be more painful for the workers losing their jobs than for him. Kaufman claims the layoffs mark Fiverr returnin

Topics: ai company fiverr staff work

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Stategraph: Terraform state as a distributed systems problem

news.ycombinator.com Unknown 2025-09-19 10:38:17

Why We're Building Stategraph: Terraform State as a Distributed Systems Problem TL;DR why-stategraph.tldr $ cat why-stategraph.tldr • Terraform state shows distributed coordination issues but uses file primitives. • File blob (100% read/lock) vs. change cone (~3%). • Stategraph → graph state, ACID transactions, subgraph isolation. The Terraform ecosystem has spent a decade working around a fundamental architectural mismatch: we're using filesystem semantics to solve a distributed systems probl

Topics: graph lock resources state terraform

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Why We're Building Stategraph: Terraform State as a Distributed Systems Problem

news.ycombinator.com Unknown 2025-09-20 11:38:17

Why We're Building Stategraph: Terraform State as a Distributed Systems Problem TL;DR why-stategraph.tldr $ cat why-stategraph.tldr • Terraform state shows distributed coordination issues but uses file primitives. • File blob (100% read/lock) vs. change cone (~3%). • Stategraph → graph state, ACID transactions, subgraph isolation. The Terraform ecosystem has spent a decade working around a fundamental architectural mismatch: we're using filesystem semantics to solve a distributed systems probl

Topics: graph lock resources state terraform

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Fiverr is laying off 250 employees to become an 'AI-first company'

engadget.com Unknown 2025-09-20 20:57:30

Gig economy platform Fiverr is laying off 250 employees as it pivots to being an "AI-first company," CEO Micha Kaufman shared in an essay on X. The move affects around 30 percent of the company's staff, The Register writes, and it's not uncommon among tech companies in 2025. Duolingo announced similar plans to become "AI-first" in April. Kaufman describes this process as returning to "startup mode" and writes that his ultimate goal is to turn Fiverr into "an AI-first company that's leaner, fast

Topics: ai company employees fiverr kaufman

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Writing an operating system kernel from scratch – RISC-V/OpenSBI/Zig

news.ycombinator.com Uros Popovic 2025-09-19 00:36:23

Posted on: September 13, 2025 | at 09:30 AM Follow @popovicu94 I recently implemented a minimal proof of concept time-sharing operating system kernel on RISC-V. In this post, I’ll share the details of how this prototype works. The target audience is anyone looking to understand low-level system software, drivers, system calls, etc., and I hope this will be especially useful to students of system software and computer architecture. This is a redo of an exercise I did for my undergraduate cours

Topics: interrupt kernel sp stack thread

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BlackBerry Passport getting set to follow Classic with a new life on Android

androidauthority.com Unknown 2025-09-22 05:28:53

Blackberry The original BlackBerry Passport TL;DR The team behind BlackBerry Classic’s Android revival is now working on a similar project for the BlackBerry Passport. Zinwa Technologies, the team behind the project, plans to sell DIY kits that will allow users to run Android on the Passport. The kits aren’t available immediately, but will be available sometime in 2026, which is slightly disappointing. Old, discarded BlackBerry phones are having a renaissance moment. We recently witnessed an

Topics: android blackberry classic passport zinwa

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Windows 11 upgrade failed? These are my 4 most powerful troubleshooting secrets

zdnet.com Ed Bott 2025-09-22 23:00:00

SvetaZi/iStock/Getty Images Plus Follow ZDNET: Add us as a preferred source on Google. When Windows decides that it isn't interested in completing an upgrade, it can be maddeningly unhelpful, spitting out error codes and cryptic messages that can leave even experts scratching their heads. Also: How to upgrade your 'incompatible' Windows 10 PC to Windows 11 - for free That can happen with a routine Windows 11 feature update, but it's especially frustrating when you're trying to install Window

Topics: error setupdiag updates upgrade windows

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Writing an operating system kernel from scratch

news.ycombinator.com Uros Popovic 2025-09-25 01:44:44

Posted on: September 13, 2025 | at 09:30 AM Follow @popovicu94 I recently implemented a minimal proof of concept time-sharing operating system kernel on RISC-V. In this post, I’ll share the details of how this prototype works. The target audience is anyone looking to understand low-level system software, drivers, system calls, etc., and I hope this will be especially useful to students of system software and computer architecture. This is a redo of an exercise I did for my undergraduate cours

Topics: interrupt kernel sp stack thread

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Lexy: A parser combinator library for C++17

news.ycombinator.com Unknown 2025-09-21 10:05:45

Why should I use lexy over XYZ? lexy is closest to other PEG parsers. However, they usually do more implicit backtracking, which can hurt performance and you need to be very careful with rules that have side-effects. This is not the case for lexy, where backtracking is controlled using branch conditions. lexy also gives you a lot of control over error reporting, supports error recovery, special support for operator precedence parsing, and other advanced features. Boost.Spirit The main differenc

Topics: boost error json lexy parser

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Raspberry Pi Synthesizers – How the Pi is transforming synths

news.ycombinator.com Unknown 2025-09-24 15:08:57

Raspberry Pi Synthesizers – How the Pi is transforming synths The readymade pocket computer is replacing custom DSP. by Adam Douglas | 4,5 / 5,0 | 4,5 / 5,0 | Approximate reading time: 5 Minutes Raspberry Pi Synthesizers · Source: Korg, Raspberry Pi Previous Next ADVERTISEMENT The Raspberry Pi microcomputer is finding its way into more and more synthesizers. Do your synths have a slice of it inside? Read on to find out. ADVERTISEMENT Raspberry Pi Digital synthesizers are essentially compu

Topics: content korg pi raspberry synths

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Formally verifying a floating-point division routine with Gappa – part 1

news.ycombinator.com Unknown 2025-09-27 05:35:41

We have recently released a set of optimized assembly-language routines for basic floating-point arithmetic, in Arm Optimized Routines, under an open-source license. These functions perform the same operations as hardware floating point instructions, for example addition, multiplication, and division. However, they are implemented using only integer 32-bit Arm instructions, for Arm CPUs without hardware floating point. Existing open-source libraries such as libgcc and compiler-rt offer similar

Topics: bit code error gappa value

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The HackberryPi CM5 handheld computer

news.ycombinator.com Unknown 2025-09-27 02:36:46

The HackberryPi_CM5 project repository The HackberryPi_CM5 project is a RaspberryPi Compute Module SBC(single board computer) powered handheld computer with reuse of original keyboard from old Blackberry phones. The goal of the project is to create a portable linux-powered computer that lets the user gain a deeper understanding of Linux and explore the architecture of hardware, software, and the Linux kernel. This repository will be used to share information about the project and tutorial about

Topics: battery cm5 hackberrypi_cm5 information page

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Google’s Pixel Referral program is back for the Pixel 10, letting you make a nice $500

androidauthority.com Unknown 2025-10-01 09:06:19

Robert Triggs / Android Authority TL;DR Google has relaunched the Pixel Referral Program for the Pixel 10 series, giving users 10 codes to share. A referral code provides a 10% discount on a new Pixel phone for the buyer and gives the referrer a $50 store credit. The credits and discounts are valid until February 28, 2026, and can be stacked with other offers, with some exceptions. Google relaunched the Pixel Referral Program last year for the Pixel 9 series. Users can refer their friends an

Topics: 10 google new pixel referral

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Hollow Knight: Silksong's first patch should give you a chance against its early bosses

engadget.com Unknown 2025-10-02 11:41:25

Video game difficulty is a real balancing act. You want to be challenged and earn each new level, but when it's too hard there's more frustration than fun. Apparently, a number of players have found the new Hollow Knight: Silksong game a bit too hard, struggling to defeat some of the bosses. Now, Team Cherry, the indie studio behind the Hollow Knight series, is making things a bit easier. Team Cherry has announced Hollow Knight: Silksong's first patch, which includes a "slight difficulty reduct

Topics: bosses cherry game hollow knight

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A new experimental Go API for JSON

news.ycombinator.com Joe Tsai 2025-10-03 03:54:32

Joe Tsai, Daniel Martí, Johan Brandhorst-Satzkorn, Roger Peppe, Chris Hines, and Damien Neil 9 September 2025 Introduction JavaScript Object Notation (JSON) is a simple data interchange format. Almost 15 years ago, we wrote about support for JSON in Go, which introduced the ability to serialize and deserialize Go types to and from JSON data. Since then, JSON has become the most popular data format used on the Internet. It is widely read and written by Go programs, and encoding/json now ranks

Topics: encoding error json v1 v2

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Customize Your Google Search Results With This New Feature

cnet.com See Full Bio 2025-10-05 04:30:00

Facing criticism for degraded search results and angst from people who want to avoid AI Overviews, Google has announced a new search feature that lets you choose the sites you want to see in your news and search results. Google said in a recent blog post that it's launching Preferred Sources in the US and India this month. The new feature can be accessed through a plus icon to the right of Top Stories panels or a direct link to your preferences. "Once you select your sources, they will appear

Topics: google news preferred search sources

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Forget Search, these 2 Google services desperately need Preferred Sources instead

androidauthority.com Unknown 2025-10-06 08:00:56

Andy Walker / Android Authority It seems like everyone celebrated the announcement of Preferred Sources for Google Search. Don’t get me wrong; it’s a good idea. Giving consumers more control over their internet experience is definitely the way to go. However, I find it a somewhat pointless addition to a tool I use to find a variety of sources and not merely highlight my favorites. Beyond Search, I argue that two other Google products would benefit from Preferred Sources: News and Discover. I’v

Topics: google news preferred search sources

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David Howard Thornton on the Art of Being Art the Clown

gizmodo.com Sabina Graves 2025-10-06 05:30:09

Terrifier icon Art the Clown has made an impact as the new king of painted-face slasher villains and the character enters a new era as a feature at Halloween Horror Nights. The spooky season haunt at Universal Studios Orlando and Universal Studios Hollywood features not only haunted houses inspired by Damien Leone’s bloody franchise but also a huge Art the Clown presence for walk-around characters. At the red carpet for Halloween Horror Nights Hollywood, Terrifier’s very own Art the Clown, Davi

Topics: art horror just terrifier universal

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Type-safe and user-friendly error handling in Swift 6

news.ycombinator.com Unknown 2025-10-04 15:54:19

Learn how to implement user-friendly, type-safe error handling in Swift 6 with structured diagnostics and a hierarchical error model. Swift 6 brings an exciting new feature to the language: typed throws. This change makes error handling in Swift much more type-safe, allowing us to define exactly what kinds of errors a function can throw. It’s a small change on the surface, but it opens the door to writing cleaner, more reliable code. Now, you might be wondering — how do we actually use this in

Topics: case error let message type

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Bret Taylor’s Sierra raises $350M at a $10B valuation

techcrunch.com Rebecca Szkutak 2025-10-08 17:33:40

Investors are clearly bullish about former Salesforce co-CEO Bret Taylor’s AI agent startup Sierra. Sierra, which helps enterprises build customer service AI agents, announced it raised a $350 million funding round on Thursday. The round, led by earlier investor Greenoaks Capital, values the startup at $10 billion, according to a company blog post that confirmed an earlier report from Axios on Wednesday. Sierra was founded in early 2024 by Taylor and longtime Google alum Clay Bavor. The compan

Topics: bavor disrupt google sierra taylor

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Who Owns ‘Telepathy’?

gizmodo.com Lucas Ropek 2025-10-09 01:10:12

Elon Musk’s neural implant startup Neuralink has been trying to trademark two product names: Telepathy and Telekinesis. Musk has previously claimed that his company will be able to give people “superpowers,” so the desire to take ownership over these special abilities makes sense. Unfortunately for Neuralink, patent applications for Telepathy and Telekinesis have already been filed by a different business. Wired reports that a lucid dreaming startup (who knew there was such a thing?) called Pro

Topics: applications berry chip company neuralink

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Neuralink’s Bid to Trademark ‘Telepathy’ and ‘Telekinesis’ Faces Legal Issues

wired.com Emily Mullin 2025-10-09 13:47:28

The United States Patent and Trademark Office has rejected Neuralink’s attempt to trademark the product names Telepathy and Telekinesis, citing pending applications by another person for the same trademarks. Neuralink, the brain implant company co-founded by Elon Musk, filed to trademark the names in March. But in letters sent to Neuralink in August, the trademark office is refusing to allow the applications to move forward. It says Wesley Berry, a computer scientist and co-founder of tech star

Topics: applications berry neuralink telepathy trademark

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Hollow Knight: Silksong is breaking Steam, Nintendo’s eShop

arstechnica.com Unknown 2025-10-10 01:02:14

An influx of players excited for this morning's launch of Hollow Knight: Silksong are encountering widespread errors purchasing and downloading the game from Steam this morning. Ars Technica writers have encountered errors getting store pages to load, adding the game to an online shopping cart, and checking out once the game is part of the cart. That aligns with widespread social media complaints and data from DownDetector, which saw a sudden spike of over 11,000 reports of problems with Steam

Topics: errors game problems silksong steam

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Google was down in eastern EU and Turkey

news.ycombinator.com Web - Http 2025-10-10 19:23:35

Users across multiple Eastern European countries reported a significant and ongoing outage affecting a suite of Google services, causing widespread disruption to both work and daily life. #BREAKING Google services down in some countries, primarily felt across Southeastern Europe pic.twitter.com/cMYRYPHFi8 — Anadolu English (@anadoluagency) September 4, 2025 Reports began flooding into downdetector.com and social media platforms around from users in Bulgaria, Turkey, Greece and other Eastern Eu

Topics: error google messages search users

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This guy made his own slider phone out of a broken Z Flip 5 and BlackBerry keyboard

androidauthority.com Unknown 2025-10-10 23:38:17

TL;DR A YouTuber attached a BlackBerry Q10 keyboard to a folded Galaxy Z Flip 5 with a broken folding screen. The YouTuber also added a magnetic slider mechanism akin to phones like the Nokia N97. A video shows that the keyboard works in apps like YouTube and in games. What happens if your Galaxy Z Flip‘s folding screen breaks? Well, you could get it repaired, or you could do what one enterprising person did and attach a BlackBerry keyboard to it. YouTuber and inventor Marcin Plaza decided t

Topics: blackberry flip keyboard screen youtuber

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‘It: Welcome to Derry’ Will Arrive Just in Time for Halloween

gizmodo.com Cheryl Eddy 2025-10-14 05:30:20

We knew It: Welcome to Derry was arriving in October, but now we know exactly when to start looking for red balloons in the sky and paper boats in the sewer: October 26. Andy Muschietti, Barbara Muschietti, and Jason Fuchs’ expansion of Stephen King’s haunted Maine town as seen in the recent It movies announced the news today with a suitably festive social media post: Everyone’s dying to see IT. #ITWelcomeToDerry premieres October 26 on HBO Max.pic.twitter.com/9HqODk9P1Q — IT: Welcome to Derry

Topics: derry muschietti october story welcome

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Chronicle – Idiomatic, type safe event sourcing framework for Go

news.ycombinator.com Unknown 2025-10-13 12:37:02

Chronicle A pragmatic and type-safe toolkit for modern event sourcing in Go. Want to hire me? Quickstart Warning I recommend going through the quickstart, since all examples use the Account struct used below from the account package. Install the library go get github.com/DeluxeOwl/chronicle # for debugging go get github.com/sanity-io/litter Define your aggregate and embed aggregate.Base . This embedded struct handles the versioning of the aggregate for you. We'll use a classic yet very s

Topics: account aggregate err event version

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Chronicle – idiomatic, type safe event sourcing framework for Go

news.ycombinator.com Unknown 2025-10-14 03:37:02

Chronicle A pragmatic and type-safe toolkit for modern event sourcing in Go. Want to hire me? Quickstart Warning I recommend going through the quickstart, since all examples use the Account struct used below from the account package. Install the library go get github.com/DeluxeOwl/chronicle # for debugging go get github.com/sanity-io/litter Define your aggregate and embed aggregate.Base . This embedded struct handles the versioning of the aggregate for you. We'll use a classic yet very s

Topics: account aggregate err event version

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Hobbyist Maintainers with Thomas DePierre

news.ycombinator.com Josh Bressers 2025-10-14 05:32:17

Thomas DePierre joins Open Source Security to discuss the central idea from his blog post, “You are all on the hobbyist maintainers turf now,” exploring the massive disconnect between the corporate world that consumes open source and the hobbyist community that actually produces it. The conversation reveals this isn’t a new problem, but a long-standing reality whose consequences for security, stability, and the future of software we are only now beginning to truly confront. This episode is also

Topics: depierre josh like right thomas

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Latest Tech News

How to Debug Chez Scheme Programs (2002)

The AI Layoffs Have Come for Freelance Marketplace Fiverr

Stategraph: Terraform state as a distributed systems problem

Why We're Building Stategraph: Terraform State as a Distributed Systems Problem

Fiverr is laying off 250 employees to become an 'AI-first company'

Writing an operating system kernel from scratch – RISC-V/OpenSBI/Zig

BlackBerry Passport getting set to follow Classic with a new life on Android

Windows 11 upgrade failed? These are my 4 most powerful troubleshooting secrets

Writing an operating system kernel from scratch

Lexy: A parser combinator library for C++17

Raspberry Pi Synthesizers – How the Pi is transforming synths

Formally verifying a floating-point division routine with Gappa – part 1

The HackberryPi CM5 handheld computer

Google’s Pixel Referral program is back for the Pixel 10, letting you make a nice $500

Hollow Knight: Silksong's first patch should give you a chance against its early bosses

A new experimental Go API for JSON

Customize Your Google Search Results With This New Feature

Forget Search, these 2 Google services desperately need Preferred Sources instead

David Howard Thornton on the Art of Being Art the Clown

Type-safe and user-friendly error handling in Swift 6

Bret Taylor’s Sierra raises $350M at a $10B valuation

Who Owns ‘Telepathy’?

Neuralink’s Bid to Trademark ‘Telepathy’ and ‘Telekinesis’ Faces Legal Issues

Hollow Knight: Silksong is breaking Steam, Nintendo’s eShop

Google was down in eastern EU and Turkey

This guy made his own slider phone out of a broken Z Flip 5 and BlackBerry keyboard

‘It: Welcome to Derry’ Will Arrive Just in Time for Halloween

Chronicle – Idiomatic, type safe event sourcing framework for Go

Chronicle – idiomatic, type safe event sourcing framework for Go

Hobbyist Maintainers with Thomas DePierre

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