Popular：
Virtualization DNS security formal verification reachability analysis compiler errors macro conflict web extension development framework Bitmap Graphics API inconsistencies All Tags

Debugging Bible: Nine Indispensable Rules

2025-01-13

David J. Agans's "Debugging: The 9 Indispensable Rules for Finding Even the Most Elusive Software and Hardware Problems" is hailed as a classic for software and hardware developers. This book focuses not on specific technologies, but on fundamental methods for finding and fixing bugs. Through nine rules, illustrated with numerous engaging examples, the author explains how to understand the system, make it fail, get data, divide and conquer, change one thing at a time, keep an audit trail, check assumptions, seek help, and verify fixes. Even experienced programmers will find helpful reminders, while novices will find it an invaluable resource.

Read more
(dwheeler.com)
Development

Northern Giant Hornet Eradicated from the United States

2024-12-23

The Washington State Department of Agriculture (WSDA) and the United States Department of Agriculture (USDA) announced the eradication of the northern giant hornet (Vespa mandarinia) from Washington state and the US after three years without confirmed detections. This success is attributed to a multi-year collaborative effort involving state and federal agencies, community members, and the public, who played a crucial role in reporting sightings. The hornets posed a significant threat to honeybees, other pollinators, and agriculture, and their eradication protects the US ecosystem and agricultural industry. While eradicated, vigilance continues to prevent reintroduction.

Read more
(agr.wa.gov)
Misc Northern Giant Hornet invasive species eradication

mbake: A Makefile Formatter and Linter After 50 Years!

2025-06-22
mbake: A Makefile Formatter and Linter After 50 Years!

After a 50-year wait (referencing the long history of Makefiles), mbake is finally here! This Makefile formatter and linter not only automatically fixes formatting issues such as indentation, spacing, and line breaks but also intelligently detects `.PHONY` targets and supports custom rules and plugin extensions. It offers a rich command-line interface for formatting, validation, and version management, seamlessly integrating into CI/CD workflows. Whether you're a beginner or an expert, mbake significantly improves Makefile writing efficiency and readability.

Read more
(github.com)
Development linter

Haskell Functors: Elegantly Handling Values in Context

2025-04-05

In Haskell, Functors provide a powerful abstraction for working with values wrapped in contexts like Maybe or lists. The `fmap` function elegantly applies functions to these values, avoiding type errors that would arise from direct function application. The article details the Functor definition, the role of `fmap`, and the identity and composition laws Functors must obey, illustrating with examples using Maybe and lists. It concludes by highlighting the benefits of Functors in creating cleaner, more readable code.

Read more
(codehakase.com)
Development

AI Speeds Up DNA Data Reading, Bringing Practical Use Closer

2025-03-04
AI Speeds Up DNA Data Reading, Bringing Practical Use Closer

Researchers at UC San Diego have developed an AI system called DNAformer that can decode data stored in DNA nearly 90 times faster than previous methods. The system uses a deep learning model to reconstruct DNA sequences, incorporating error correction and data conversion algorithms. It successfully read 100MB of data, including images, audio, and text. This breakthrough promises to accelerate the practical use of DNA data storage, offering new solutions for long-term data preservation.

Read more
(www.newscientist.com)
Tech DNA storage data reading

Compressing Icelandic Name Declension into a 3.27kB Trie

2025-08-02
Compressing Icelandic Name Declension into a 3.27kB Trie

Displaying Icelandic names in UIs is tricky due to declension. This article details a JavaScript library that solves this by using a trie data structure. The trie is built from public Icelandic name data and cleverly compressed to under 4.5kB gzipped. The author explains the process, from data acquisition and preprocessing to trie construction and compression techniques like merging subtrees and sibling leaves. Testing reveals high accuracy even for unseen names. The final result is a remarkably compact 3.27kB trie, showcasing efficient data representation and algorithmic optimization.

Read more
(alexharri.com)
Development Icelandic Trie

Gaussian Quadrature: A Powerful Numerical Integration Technique

2025-06-08

This blog post explores Gaussian quadrature, a powerful numerical integration technique, specifically Chebyshev-Gauss quadrature. It approximates definite integrals by evaluating the function at specific nodes and summing the weighted values. Compared to traditional methods, it achieves higher accuracy with fewer nodes, particularly for integrals over the interval [-1,1]. The post explains how to adapt general intervals and function forms to fit the Chebyshev-Gauss quadrature, demonstrating its application and advantages with an example. The technique found application in estimating sea level change rates.

Read more
(rohangautam.github.io)
Development numerical integration Gaussian quadrature Chebyshev polynomials

Adélie Linux Saves the Day: RISC-V Rebuilds on Milk-V Pioneer

2025-03-21

Facing infrastructure challenges, the decision to drop RISC-V repositories was reversed thanks to Zach van Rijn of Adélie Linux, who provided access to a Milk-V Pioneer machine. A full world rebuild was completed on this machine, resulting in new, tested repositories. While performance isn't quite on par with Cortex-A72 (closer to Cortex-A55), build times are acceptable for most projects (though Rust builds remain slow). The new repositories are comparable to LoongArch64, including tests. This solution is provisional and future support will depend on ongoing performance and stability.

Read more
(chimera-linux.org)
Development

Google Wins Partial Victory in Antitrust Case: DOJ Relents on AI Divestiture

2025-03-10
Google Wins Partial Victory in Antitrust Case: DOJ Relents on AI Divestiture

Google has scored a significant victory in its ongoing antitrust battle with the Department of Justice. While the DOJ still seeks significant regulatory changes to Google's search and Android operations, it has dropped its demand for Google to divest from its AI investments. Instead, Google will now be required to notify the government of future AI acquisitions. This is a substantial win for Google, which argued that restricting its AI investments would harm US leadership in the field. The government's revised proposal still includes extensive oversight of Google's search and Android businesses.

Read more
(arstechnica.com)
Tech

Ancient DNA Cracks the Case of the Plague of Justinian

2025-09-14
Ancient DNA Cracks the Case of the Plague of Justinian

For the first time, researchers have found direct genomic evidence of *Yersinia pestis*, the bacterium behind the Plague of Justinian—history's first recorded pandemic—in a mass grave at the ancient city of Jerash, Jordan. This discovery definitively links the pathogen to the devastating outbreak (AD 541–750), solving a long-standing historical mystery. Analysis of ancient DNA from eight teeth revealed nearly identical strains of *Y. pestis*, confirming its presence within the Byzantine Empire and suggesting a rapid, widespread outbreak. The research highlights the enduring threat of plague, which continues to circulate globally, underscoring the cyclical nature of pandemics and the importance of understanding their origins.

Read more
(phys.org)
Tech Justinian Plague

NASA's Dragonfly: Key Development Milestones Achieved

2025-09-14
NASA's Dragonfly: Key Development Milestones Achieved

NASA's Dragonfly mission, a car-sized rotorcraft designed to explore Saturn's moon Titan, is progressing smoothly. Recent tests have included aerodynamic analyses of its rotors, durability trials of its insulation in Titan-like conditions, and key science payload component testing. The Goddard Space Flight Center completed testing of a crucial component of the Dragonfly Mass Spectrometer, while APL engineers completed thermal testing of the lander's insulation and its communications systems. Lockheed Martin also passed key milestones for the aeroshell, ensuring a safe entry into Titan's atmosphere. These tests pave the way for Dragonfly's launch in July 2028, ensuring its ability to withstand Titan's extreme environment and successfully conduct its scientific investigations.

Read more
(science.nasa.gov)
Tech Dragonfly

UTF-8: A Stroke of Genius

2025-09-13
UTF-8: A Stroke of Genius

UTF-8's brilliance lies in its elegant backward compatibility with ASCII while supporting millions of characters. This article lucidly explains UTF-8's design: it cleverly uses leading bits to signify character length (1-4 bytes), with ASCII characters needing only 1 byte. Examples demonstrate encoding and decoding text with ASCII and emojis. Compared to other encodings, UTF-8's balance of compatibility and extensibility is a masterpiece of design.

Read more
(iamvishnu.com)
Development

The Walmart Effect: A Hidden Cost of Low Prices

2024-12-24
The Walmart Effect: A Hidden Cost of Low Prices

Walmart, known for its low prices, has long been considered a boon for lower- and middle-income families. However, two new research papers challenge this view. The studies find that while Walmart lowers consumer prices, it also leads to decreased income and increased unemployment in communities, with the negative effects outweighing consumer savings. This is attributed to Walmart undercutting local competitors, reducing jobs, and leveraging its monopsony power to suppress wages for both suppliers and employees. This raises questions about the "consumer welfare standard," which prioritizes low prices as a measure of economic health. The research suggests that a singular focus on low prices can lead to long-term economic harm, prompting a reevaluation of policy priorities.

Read more
(www.theatlantic.com)
Startup economic impact consumer welfare

18th-Century Dental Horror Stories: When Tooth Extraction Could Mean Losing Your Jaw

2024-12-14
18th-Century Dental Horror Stories: When Tooth Extraction Could Mean Losing Your Jaw

This article recounts cases from Thomas Berdmore's 1768 treatise on dental disorders, painting a grim picture of 18th-century dentistry. Patients suffered immensely from oral ulcers, tartar buildup, and the often disastrous consequences of unqualified practitioners. One case describes a barber-surgeon removing a tooth along with a walnut-sized piece of jawbone! These stories highlight the primitive techniques and significant risks of the time, contrasting sharply with modern dentistry. While progress has been made, the article serves as a reminder of the ongoing challenges of access and affordability in dental care.

Read more
(thequackdoctor.substack.com)
Misc 18th-century dentistry medical history dental treatment

2025 US Financial Crisis: A Different Beast Than 2008

2025-04-04
2025 US Financial Crisis: A Different Beast Than 2008

The 2008 financial crisis stemmed from complex financial engineering and excessive leverage. The looming 2025 crisis, however, is self-inflicted, born from protectionist trade policies and isolationism. While 2008 saw government intervention, albeit failing to address underlying issues, 2025 finds the US lacking a coherent response and facing eroding international trust. This points towards a far more severe downturn, potentially a depression. Unlike 2008's attempts to paper over bad behavior, the 2025 crisis lacks a clear path to recovery, hampered by a lack of international cooperation and severely damaged global relationships.

Read more
(samhenrycliff.medium.com)
Tech Financial Crisis

Exploring Climate Classification Systems: Beyond Köppen-Geiger

2024-12-14
Exploring Climate Classification Systems: Beyond Köppen-Geiger

This article delves into climate classification systems for Earth and beyond. It begins by introducing the widely used Köppen-Geiger system and its limitations. The author then analyzes various modifications and alternatives, including Trewartha, FAO, and Holdridge systems, comparing their differences in parameter selection, seasonality representation, and applicability. Ultimately, the author highlights the Prentice et al. BIOME1 model as a superior option due to its parameter choices and predictive accuracy, offering valuable insights for building more versatile climate classification systems.

Read more
(worldbuildingpasta.blogspot.com)
Tech climate classification Köppen-Geiger BIOME1 model

Home Server Hacked: A New Year's Surprise

2025-01-05

The author discovered their home server infected with Kinsing malware after Christmas, exploiting an unprotected Docker container to mine cryptocurrency. The attacker repeatedly attempted brute-force attacks. The author closed all external network access to minimize the attack surface. This incident serves as a stark reminder of the risks of exposing a home server to the internet, highlighting the need for robust security measures even with password protection.

Read more
(raniseth.com)
Development home server security Docker security

Proving Memoization Correctness in Lean: A Case Study

2025-06-20
Proving Memoization Correctness in Lean: A Case Study

This blog post demonstrates how to solve a dynamic programming problem using memoization in the Lean theorem prover and formally verify its correctness. The author tackles the Bytelandian Gold Coins problem, initially presenting a memoized solution using a HashMap. The difficulty of directly proving its correctness is highlighted due to challenges in reasoning about data structure invariants. The solution leverages subtypes and dependent pairs to create a `PropMap`, a memoization table that stores not only computed values but also proofs of their correctness. The algorithm's correctness is then proven incrementally within the recursive implementation itself, culminating in a trivial top-level proof. This approach elegantly intertwines code and proof, showcasing a powerful technique for formally verifying dynamic programming algorithms.

Read more
(tannerduve.github.io)
Development dynamic programming

The Matrix Calculus You Need For Deep Learning

2025-03-29
The Matrix Calculus You Need For Deep Learning

This paper aims to explain all the matrix calculus you need to understand deep neural network training. Assuming only Calculus 1 knowledge, it progressively builds from scalar derivative rules to vector calculus, matrix calculus, Jacobians, and chain rules. Through derivations and examples, the authors demystify these concepts, making them accessible. The paper concludes with a summary of key matrix calculus rules and terminology.

Read more
(explained.ai)
AI matrix calculus

Retry Algorithm Showdown: Linear, Exponential, and Capped Exponential Backoff

2025-01-05

This article compares three common retry algorithms: linear backoff, exponential backoff, and capped exponential backoff. Linear backoff increases the wait time by a fixed amount with each retry; exponential backoff doubles (or multiplies) the wait time with each retry; capped exponential backoff is similar to exponential backoff but with a maximum delay. The article also discusses adding random jitter to prevent "thundering herd" problems when multiple clients retry simultaneously.

Read more
(www.compareretries.com)
Development retry algorithm exponential backoff jitter

The Cyclic Identity for Partial Derivatives: Unraveling the Mystery of -1

2024-12-16
The Cyclic Identity for Partial Derivatives: Unraveling the Mystery of -1

This article explores the cyclic identity for partial derivatives: ∂z/∂x * ∂x/∂y * ∂y/∂z = -1, rather than the intuitive 1. Through examples and various proof methods, including differential forms and geometric interpretations, the article reveals the mathematical principles behind this seemingly counterintuitive identity. The author also discusses its applications in physics and offers intuitive explanations.

Read more
(johncarlosbaez.wordpress.com)
Misc partial derivatives differential forms mathematical physics

Bitwarden Service Status: Recent Outages and Latency Issues

2025-01-08

Bitwarden password manager has experienced several service outages and latency issues recently. On January 7th, US and EU cloud services, including Identity Service, RESTful API, and Web Vault, underwent maintenance and experienced intermittent access problems. On January 8th, US cloud services also experienced degraded service, with users encountering unexpected errors or access denied during login. The Bitwarden team is actively monitoring and resolving the issues. Users are advised to try different network connections to resolve access problems.

Read more
(status.bitwarden.com)
Tech outages

Briar: Decentralized Messaging App for Activists and Journalists

2025-03-14

Briar is a messaging app designed for activists, journalists, and anyone needing secure communication. Unlike traditional apps, Briar doesn't rely on central servers; messages sync directly between devices. Offline, it uses Bluetooth, Wi-Fi, or memory cards. Online, it leverages Tor for enhanced privacy. Briar resists surveillance and censorship by employing end-to-end encryption and a decentralized architecture. It offers private messaging, public forums, and blogs, protecting against metadata surveillance, content filtering, takedown orders, and denial-of-service attacks. Briar's long-term vision extends beyond messaging, aiming to support secure, distributed applications for crisis mapping and collaborative work, fostering safe spaces for communication and organization globally.

Read more
(briarproject.org)
Development censorship-resistant

WebGL Fluid Simulation App Launched: Experience Realistic Fluid Effects!

2024-12-29
WebGL Fluid Simulation App Launched: Experience Realistic Fluid Effects!

The "Try Fluid Simulation" app has arrived! Leveraging WebGL, it delivers stunningly realistic fluid simulations right in your browser. Experience the mesmerizing movement of liquids, the ebb and flow of waves, and more, all with simple controls. Create fluids of various shapes and textures with a few clicks, witnessing the power of physics engines in action. This app is perfect for developers learning WebGL and enthusiasts fascinated by computer graphics and fluid simulation. Dive into this mesmerizing world of fluids!

Read more
(paveldogreat.github.io)
Development Fluid Simulation

Pink Floyd's 'The Wall': A Descent into Isolation and the Search for Meaning

2024-12-12

Pink Floyd's 'The Wall' is a groundbreaking concept album chronicling the fictional Pink's journey from childhood trauma to self-imposed isolation. Haunted by the loss of his father in World War II, a domineering mother, and the crushing weight of fame, Pink constructs a metaphorical wall to shield himself from emotional pain. This wall, built brick by brick through life's hardships, leads him to the brink of insanity. Yet, the narrative explores themes of freedom and responsibility, culminating in a theatrical mental trial that leaves the listener questioning the nature of life, loss, and redemption. Inspired by Roger Waters' personal experiences and disillusionment with stardom, 'The Wall' remains a powerful and enduring piece of musical art.

Read more
(thewallanalysis.com)
Game The Wall Concept Album

Hightouch Hiring Senior Frontend Engineer: $170K-$240K

2025-04-01
Hightouch Hiring Senior Frontend Engineer: $170K-$240K

Hightouch, a $1.2B valued CDP company, is hiring a Senior Frontend Engineer. They've built a Composable CDP and an AI Decisioning platform, empowering businesses to leverage data and AI for improved marketing and operations. This role involves working on Customer Studio (their second major product, accounting for half their revenue), including enhancing the Audience Builder, Journey Builder, and building data visualization capabilities. The salary is $170K-$240K, plus a generous equity package.

Read more
(job-boards.greenhouse.io)
Development

Wright's Paradox: Organic Architecture vs. Mile-High Skyscraper

2025-02-06
Wright's Paradox: Organic Architecture vs. Mile-High Skyscraper

The architectural world is divided on the issue of density: pro-density advocates for dense, centralized cities, while anti-density champions decentralized, sprawling suburbs. Frank Lloyd Wright, a renowned architect known for his organic approach emphasizing a building's connection to its surroundings, belonged to the latter camp. His Broadacre City exemplifies this philosophy. Ironically, Wright also designed a mile-high skyscraper, 'The Illinois,' a stark contrast to his organic principles, prompting reflection on the compatibility of organic architecture and high-rise buildings.

Read more
(www.onverticality.com)
Design Frank Lloyd Wright

msgpack23: A Modern C++ MessagePack Library

2025-03-30
msgpack23: A Modern C++ MessagePack Library

msgpack23 is a lightweight, header-only C++ library for serializing and deserializing data to the MessagePack format. Leveraging modern C++ features (C++20 and beyond), it offers a flexible, zero-dependency solution supporting various data types including STL containers, time points, and custom types. Its simple API, performance focus, and extensibility make it a powerful tool for efficient data handling.

Read more
(github.com)
Development
1 2 … 466 467 468 470 472 473 474 … 596 597