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RustGPT: A pure-Rust transformer LLM built from scratch

news.ycombinator.com Unknown 2025-09-27 01:47:18

🦀 Rust LLM from Scratch RustGPT-demo-zoon.mp4 A complete Large Language Model implementation in pure Rust with no external ML frameworks. Built from the ground up using only ndarray for matrix operations. 🚀 What This Is This project demonstrates how to build a transformer-based language model from scratch in Rust, including: Pre-training on factual text completion on factual text completion Instruction tuning for conversational AI for conversational AI Interactive chat mode for testing f

Topics: model rs test tests training

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The key points of "Working Effectively with Legacy Code"

news.ycombinator.com Nicolas Carlo 2025-10-03 12:00:23

Struggling with Legacy Code and not enough time to clean it up? can help you rescue any codebase quickly and safely ! “Legacy Code is code without tests” If you’ve come across that definition, it’s from Michael Feathers’ book: Working Effectively with Legacy Code. While I have a slightly extended definition, this is a very valid and useful one! Feathers’ book is from 2004. Yet, its content doesn’t get outdated. There is a reason for that and this CommitStrip puts it best: This book is a re

Topics: code entries legacy lot tests

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The Key Points of Working Effectively with Legacy Code

news.ycombinator.com Nicolas Carlo 2025-10-03 22:00:23

Struggling with Legacy Code and not enough time to clean it up? can help you rescue any codebase quickly and safely ! “Legacy Code is code without tests” If you’ve come across that definition, it’s from Michael Feathers’ book: Working Effectively with Legacy Code. While I have a slightly extended definition, this is a very valid and useful one! Feathers’ book is from 2004. Yet, its content doesn’t get outdated. There is a reason for that and this CommitStrip puts it best: This book is a re

Topics: code entries legacy lot tests

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Using Claude Code SDK to reduce E2E test time

news.ycombinator.com Jampa Uchoa 2025-10-07 23:57:51

End-to-end (E2E) tests sit at the top of the test pyramid because they're slow, fragile, and expensive. But they're also the only tests that completely verify complete user workflows actually work across systems. Due to time constraints, most teams run E2E nightly to avoid CI bottlenecks. However, this means bugs can slip through to production and be harder to fix because there are so many changes to isolate the root cause. But what if we could run only the relevant E2E tests for specific code

Topics: claude e2e files test tests

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Best Online Hearing Tests Available in 2025: Make Sure Your Ears Are Working Properly With These Services

cnet.com See Full Bio 2025-10-19 11:00:00

CNET staff -- not advertisers, partners or business interests -- determine how we review products and services. If you buy through our links, we may earn a commission. As we get older, our ability to hear may start to diminish. While many people are quick to get glasses for better vision, the ears are often overlooked. Let’s be honest: It’s probably been a long time since you’ve had your hearing checked, if you've had it checked at all. It's easy to take your hearing for granted, and while it's

Topics: hearing online results test tests

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Delete Tests

news.ycombinator.com André Arko 2025-10-16 21:18:15

You should delete tests We’ve had decades of thought leadership around testing, especially coming from wholistic development philosophies like Agile, TDD, and BDD. After all that time and several supposedly superseding movements, the developers I talk to seem to have developed a folk wisdom around tests. That consensus seems to boil down to simple but mostly helpful axioms, like “include tests for your changes” and “write a new test when you fix a bug to prevent regressions”. Unfortunately, on

Topics: confidence delete fix test tests

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Building your own CLI coding agent with Pydantic-AI

news.ycombinator.com Ben O'Mahony 2025-10-22 13:34:29

Learning by doing Ben O’Mahony is Principal AI Engineer at Thoughtworks. He is a results-driven AI/Engineering leader with a track record of building high-performing teams and shipping business-critical AI, ML and data products and platforms at scale. He has deep expertise across the full Engineering and Data lifecycle from research to production deployment. Ben is adept at defining technical strategy, driving execution and partnering cross-functionally to deliver measurable impact. Recently Be

Topics: agent code mcp run tests

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OpenAI and Anthropic conducted safety evaluations of each other's AI systems

engadget.com Unknown 2025-10-24 10:36:37

Most of the time, AI companies are locked in a race to the top, treating each other as rivals and competitors. Today, OpenAI and Anthropic revealed that they agreed to evaluate the alignment of each other's publicly available systems and shared the results of their analyses. The full reports get pretty technical, but are worth a read for anyone who's following the nuts and bolts of AI development. A broad summary showed some flaws with each company's offerings, as well as revealing pointers for

Topics: anthropic gpt models openai tests

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Microsoft headquarters go into lockdown after activists take over Brad Smith’s office

techcrunch.com Connie Loizos 2025-10-26 09:32:17

Protesters stormed Microsoft’s Redmond headquarters on Monday and made it into president Brad Smith’s office in Building 34, forcing a temporary lockdown. The “No Azure for Apartheid” group reportedly live-streamed their sit-in on Twitch, hoisting banners, chanting ‘Brad Smith, you can’t hide, you’re supporting genocide!’ and posting a mock legal summons charging Smith with “crimes against humanity.” TechCrunch has reached out to Microsoft for more information. According to The Verge, the prot

Topics: cloud employees google microsoft protests

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Microsoft employee arrested at headquarters while protesting Israel contracts

theverge.com Tom Warren 2025-11-04 00:33:08

is a senior editor and author of Notepad , who has been covering all things Microsoft, PC, and tech for over 20 years. Posts from this author will be added to your daily email digest and your homepage feed. A Microsoft employee has been arrested as part of protests at the company’s headquarters in Redmond, Washington this week. On Tuesday, a group of current and former Microsoft employees, as well as community members, took over a plaza at Microsoft’s headquarters to protest against the compan

Topics: arrested employee group microsoft protests

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I Tried the Best At-Home Pet DNA Test Kits on My Two Cats (2025)

wired.com Molly Higgins 2025-11-12 08:05:00

If You Have a Dog, Consider These Kits I don’t have a dog, so I didn't try these at-home DNA test kits for dogs, but these are the kits specifically for dogs from Basepaws and Wisdom Panel, the two companies I've tested for my cats. How Does a DNA Testing Kit Work? Pet DNA tests rely on pet owners collecting cells for testing through a cheek swab, where the sample is put into a sealed stabilizing or preserving fluid for transit. You’ll mail the sample back to the lab in the prepaid envelope.

Topics: dna health results test tests

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Tony Robbins and Peter Diamandis’ longevity company Fountain Life raises $18M

techcrunch.com Julie Bort 2025-11-19 18:00:00

Eight years ago, orthopedic surgeon Dr. William Kapp attended a medical conference that changed his professional life. He had gone from a private-practice doctor to co-founding a company that built critical care hospitals to then selling that company. It gave him an interest for both sides of healthcare: the medicine and business sides, he told TechCrunch. So he went to the annual conference hosted by famed physician-scientist Dr. Daniel Kraft to learn about new tech that could improve results

Topics: fountain kapp said tech tests

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Getting good results from Claude Code

news.ycombinator.com Unknown 2025-11-25 16:45:57

I've been experimenting with LLM programming agents over the past few months. Claude Code has become my favorite. It is not without issues, but it's allowed me to write ~12 programs/projects in relatively little time, and I feel I would not have been able to do all this in the same amount of time without it. Most of them, I wouldn't even have bothered to write without Claude Code, simply because they'd take too much of my time. (A list is included at the end of this post.) I'm still far from a

Topics: code project test tests use

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Getting good results from Claude code

news.ycombinator.com Unknown 2025-11-27 10:45:57

I've been experimenting with LLM programming agents over the past few months. Claude Code has become my favorite. It is not without issues, but it's allowed me to write ~12 programs/projects in relatively little time, and I feel I would not have been able to do all this in the same amount of time without it. Most of them, I wouldn't even have bothered to write without Claude Code, simply because they'd take too much of my time. (A list is included at the end of this post.) I'm still far from a

Topics: code project test tests use

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Getting Good Results from Claude Code

news.ycombinator.com Unknown 2025-11-27 22:45:57

I've been experimenting with LLM programming agents over the past few months. Claude Code has become my favorite. It is not without issues, but it's allowed me to write ~12 programs/projects in relatively little time, and I feel I would not have been able to do all this in the same amount of time without it. Most of them, I wouldn't even have bothered to write without Claude Code, simply because they'd take too much of my time. (A list is included at the end of this post.) I'm still far from a

Topics: code project test tests use

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Best Internet Speed Tests for August 2025

cnet.com See Full Bio 2025-12-11 05:00:00

Ever wonder whether you're getting your money's worth when it comes to your internet speeds? Taking an internet speed test is a quick way to find out. Whether you're experiencing lag during gaming, streaming or Zoom calls; you're testing the connection strength in different rooms; or you're unsure just how fast (or slow) your internet really is, a speed test can give you answers in minutes. These tests are quick, easy and free. Why should you take an internet speed test? There's nothing more an

Topics: internet speed speeds test tests

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Improving End-to-End Tests to Reduce Flakiness: Tools and Strategies

news.ycombinator.com Unknown 2025-12-31 09:16:32

There’s nothing worse than a test suite that fails randomly. Flaky end-to-end (E2E) tests erode confidence, slow down releases, and lead developers to ignore legitimate failures. If your team starts using the term “CI roulette,” it’s time to act. Flaky tests are fixable—but it takes visibility, discipline, and the right tooling. What Is a Flaky Test? A flaky test is one that fails sometimes and passes other times, without any changes to the code. They’re usually caused by: Timing issues (e.g

Topics: flakiness flaky test tests use

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Writing your Clojure tests in EDN files

news.ycombinator.com Unknown 2026-01-02 12:36:59

Jacob O'Bryant | 19 Jul 2025 I've previously written about my latest approach to unit tests: [Y]ou define only the input data for your function, and then the expected return value is generated by calling your function. The expected value is saved to an EDN file and checked into source, at which point you ensure the expected value is, in fact, what you expect. Then going forward, the unit test simply checks that what the function returns still matches what’s in the EDN file. If it’s supposed to

Topics: com digest eval test tests

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Twitch starts testing vertical video streams

techcrunch.com Sarah Perez 2026-01-10 04:53:52

Livestreaming service Twitch, which is owned by Amazon, announced at its annual TwitchCon event earlier this year that it would move into the vertical video space. Now those initial alpha tests have gone live with a few streamers, according to findings from market intelligence provider Appsensa. In a recent build, the firm found references to the vertical video tests and information about what sort of features these new streams would offer. The feature, once fully rolled out, would make Twitch

Topics: appsensa tests twitch vertical video

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ISRO successfully conducts hot tests of Gaganyaan propulsion system

news.ycombinator.com Authors 2026-01-19 11:19:04

ISRO has successfully conducted two hot tests of the Gaganyaan Service Module Propulsion System (SMPS) at the space agency's Propulsion Complex in Mahendragiri on July 3. The short-duration tests, lasting 30 seconds and 100 seconds respectively, were aimed at validating the test article configuration, ISRO said in a statement on Wednesday (July 8, 2025). Also read: What will Gaganyaan change for India? | Explained "The overall performance of the propulsion system during these hot tests was no

Topics: gaganyaan hot isro propulsion tests

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Working through 'Writing A C Compiler'

news.ycombinator.com Working Through 2026-01-19 05:23:33

Some time ago I decided I wanted to create a c compiler for the Hack processor in the nand2tetris book. After several dead end attempts that I might describe later I found this book : Writing a C Compiler | No Starch Press I decided to work my way through it. I plan to do blog posts as I progress through it, probably chapter by chapter. I have emailed the author a couple of times and have got helpful timely replies! – thank you What makes the book so good? Step by step By the end of chapter

Topics: book chapter compiler test tests

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A rare look inside the durability lab where Apple tortures its products

9to5mac.com Ben Lovejoy 2026-02-01 20:00:00

Apple puts its products through a lot of tests during the development process, intended to ensure they have a long and reliable life even in challenging conditions. The company tests at least 10,000 iPhones prior to launch in an attempt to cover all the bases. It’s not often the iPhone maker lets outsiders into its labs, but Apple invited some of those attending WWDC 2025 to visit one to see for themselves the conditions it expects its gadgets to survive … To be clear, it’s not the first time

Topics: apple different product tests water

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Best Internet Speed Tests for July 2025

cnet.com See Full Bio 2026-02-12 00:00:00

Is your home getting enough internet speed? There's nothing more annoying than discovering that you aren't getting the internet speeds you've been paying for. And on the flip side, it doesn't make sense to pay for speeds you don't really need -- avoiding that mistake can help you save hundreds of dollars on your internet bill. Let's face it, home internet is expensive. In a CNET broadband survey, 63% of US adults paying for home internet said their price increased last year. With those rising c

Topics: internet speed speeds test tests

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Make Sure to Stay on Top of These 6 Blood Tests When Monitoring Your Health

cnet.com See Full Bio 2026-02-14 23:04:53

Having your blood drawn might not be much fun, but regular diagnostic tests of your blood can detect diseases early for treatment and give your doctor and medical providers critical information about how well your body is functioning. The proper frequency of these blood tests depends on your age and personal health status -- the most important thing is to ask your doctor which tests you need and when you need them. With all the different types of blood tests out there, it's good to go into you

Topics: blood health levels test tests

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Both these Android handsets are under $100

zdnet.com Adrian Kingsley-Hughes 2026-02-21 04:53:00

ZDNET's key takeaways Both of these Blackview smartphones retail for under $100 Both handsets have what it takes for tasks such as messaging, taking photos and video, social media, and browsing the web Both benefit form bumping up the virtual RAM to the max. $94.99 at Amazon It's easy to think that you have to drop hundreds – if not thousands -- of dollars to get a new smartphone. If you want a flagship smartphone from the big brands, then yes, you're going to experience some serious weight r

Topics: 8c handsets ram tests wave

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Compiler for the B Programming Language

news.ycombinator.com Unknown 2026-02-25 04:27:51

B Programming Language Warning Compiler is not fully implemented yet. Logo by Strawberry 🍓 Compiler for the B Programming Language implemented in Crust Dependencies Rust - the compiler is written in it; fasm - used as the compiler backend; Quick Start $ make $ ./build/b -run ./examples/hello_world.b Also check out more examples at ./examples/. Testing The project comes with btest utility which tests the B compiler. It is built automatically along with the B compiler when you do make .

Topics: btest build compiler test tests

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Planting flags in AI coding territory

news.ycombinator.com Unknown 2026-03-02 23:39:02

Answering this often triggers more questions that shouldn't surprise anyone. Do you have some workable requirements? Have you created meaningful tests aligned with those? Can you understand and fix your code when those tests fail? Are you seeing opportunities to delete code in a way that enhances its value by reducing its liability? In all of these questions, code is ingrained with purpose, hampered by ambiguity, and therefore very much human, even when it lies forgotten in some machine wher

Topics: ai code different human tests

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Show HN: I built a tensor library from scratch in C++/CUDA

news.ycombinator.com Unknown 2026-03-08 13:20:05

DSC About DSC is a PyTorch-compatible tensor library and inference framework for machine learning models. It features a C-compatible low-level API that is wrapped in a modern Python API very similar to NumPy / PyTorch but with some nice usability improvements. Some key features of DSC include: Intuitive API : DSC Python API closely resembles NumPy / PyTorch. Built-in neural networks support : DSC comes with nn.Module built-in. Porting a model from PyTorch to DSC is trivial (check out the ex

Topics: cuda dsc level make tests

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Stay on Top of These 6 Blood Tests to Make Sure You're Monitoring Your Health

cnet.com See Full Bio 2026-03-10 11:45:03

Having your blood drawn might not be much fun, but regular diagnostic tests of your blood can detect diseases early for treatment and give your doctor and medical providers critical information about how well your body is functioning. The proper frequency of these blood tests depends on your age and personal health status -- the most important thing is to ask your doctor which tests you need and when you need them. With all the different types of blood tests out there, it's good to go into you

Topics: blood health levels test tests

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Cmapv2: A high performance, concurrent map

news.ycombinator.com Unknown 2026-03-09 06:00:15

cmapv2 installation In your Go project main directory (where the go.mod file is located) go get github.com/sirgallo/cmapv2 go mod tidy Make sure to run go mod tidy to install dependencies. usage package main import ( "github.com/sirgallo/cmapv2" ) func main () { // initialize c map cMap := cmap . NewMap () // insert key/val pair cMap . Put ([] byte ( "hi" ), [] byte ( "world" )) // retrieve value for key val := cMap . Get ([] byte ( "hi" )) // delete key/val pair cMap . Delete ([] byte ( "

Topics: byte cmap hi smap tests

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Latest Tech News

RustGPT: A pure-Rust transformer LLM built from scratch

The key points of "Working Effectively with Legacy Code"

The Key Points of Working Effectively with Legacy Code

Using Claude Code SDK to reduce E2E test time

Best Online Hearing Tests Available in 2025: Make Sure Your Ears Are Working Properly With These Services

Delete Tests

Building your own CLI coding agent with Pydantic-AI

OpenAI and Anthropic conducted safety evaluations of each other's AI systems

Microsoft headquarters go into lockdown after activists take over Brad Smith’s office

Microsoft employee arrested at headquarters while protesting Israel contracts

I Tried the Best At-Home Pet DNA Test Kits on My Two Cats (2025)

Tony Robbins and Peter Diamandis’ longevity company Fountain Life raises $18M

Getting good results from Claude Code

Getting good results from Claude code

Getting Good Results from Claude Code

Best Internet Speed Tests for August 2025

Improving End-to-End Tests to Reduce Flakiness: Tools and Strategies

Writing your Clojure tests in EDN files

Twitch starts testing vertical video streams

ISRO successfully conducts hot tests of Gaganyaan propulsion system

Working through 'Writing A C Compiler'

A rare look inside the durability lab where Apple tortures its products

Best Internet Speed Tests for July 2025

Make Sure to Stay on Top of These 6 Blood Tests When Monitoring Your Health

Both these Android handsets are under $100

Compiler for the B Programming Language

Planting flags in AI coding territory

Show HN: I built a tensor library from scratch in C++/CUDA

Stay on Top of These 6 Blood Tests to Make Sure You're Monitoring Your Health

Cmapv2: A high performance, concurrent map

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