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React Hydration Errors in Server-Side Rendering: Causes and Solutions

2025-04-06
React Hydration Errors in Server-Side Rendering: Causes and Solutions

This article delves into the common hydration errors encountered in React server-side rendering (SSR). Using a simple React/Express app example, it demonstrates how hydration errors occur: when the HTML initially rendered by the server doesn't match the component structure React expects during client-side hydration. The article thoroughly explains the difference between `hydrateRoot` and `createRoot`, and provides multiple solutions, including verifying consistency between server and client renders, handling browser-specific APIs, and using `useEffect` to prevent rendering before hydration completes. It also highlights the importance of avoiding invalid HTML and handling browser environment specifics like localStorage. The ultimate goal is ensuring consistent server and client renders to avoid hydration errors and improve user experience.

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(www.propelauth.com)
Development

Go's Surprising Prowess: Simulating Millions of Particles on a Smart TV

2025-09-25
Go's Surprising Prowess: Simulating Millions of Particles on a Smart TV

The author tackles the challenge of simulating millions of particles in Go, a language not known for its computational power, for a multiplayer game running on a smart TV. By offloading all rendering to the server and sending only frame buffers to clients, performance bottlenecks are avoided. The article details technical solutions, including a G-buffer approach, frame compression techniques, and efficient client synchronization. Despite Go's lack of SIMD, the author achieves impressive results, running a million-particle simulation on a low-cost cloud server with hundreds of concurrent clients.

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(dgerrells.com)
Development

Measuring Latency in Algorithmic Trading: From Simple Timers to System-Level Simulation

2025-07-06
Measuring Latency in Algorithmic Trading: From Simple Timers to System-Level Simulation

In low-latency algorithmic trading, milliseconds—even microseconds—matter. This article explores the challenges of accurately measuring latency in algorithmic trading systems. Simple timing methods fall short, failing to capture network I/O and other crucial factors. The author proposes a more comprehensive approach: using simulated exchanges and ATS to model the complete trading process for precise latency measurement. The article clearly explains the pros and cons of various methods and highlights the challenges encountered in pursuing ultimate performance.

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(www.architect.co)
Development algorithmic trading latency measurement

Pope Francis Dies at 88

2025-04-21
Pope Francis Dies at 88

The Vatican has announced the death of Pope Francis at the age of 88. He became Pope in 2013, succeeding Benedict XVI. His passing follows years of health concerns and a lengthy hospital stay earlier this year. Known for his compassion for the poor and marginalized, he was often called the "People's Pope." His death will be mourned by an estimated 1.4 billion Catholics worldwide.

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(news.sky.com)
Misc

Meta Denies Sharing Pirated Books for AI Training

2025-02-21
Meta Denies Sharing Pirated Books for AI Training

Meta claims it didn't seed a torrent of pirated books used for AI training, despite admitting to downloading it. In a court filing, Meta stated it took precautions to avoid seeding the downloaded files, arguing authors can't prove distribution occurred during the torrenting process. While admitting to downloading the dataset from sources like LibGen and Z-Library, Meta contends downloading itself isn't illegal, merely accessing publicly available data. This case involves copyright infringement claims, with authors alleging Meta engaged in large-scale data piracy and violated California's Computer Data Access and Fraud Act (CDAFA).

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(arstechnica.com)
Tech

Over 3.1 Million Fake GitHub Stars Used to Promote Malware

2024-12-31
Over 3.1 Million Fake GitHub Stars Used to Promote Malware

A recent study revealed over 3.1 million fake "stars" on GitHub, used to artificially inflate the popularity of scam and malware repositories. Researchers used a tool called StarScout to analyze massive datasets, identifying 278,000 accounts responsible for these fake stars across 15,835 repositories. This deceptive practice, particularly rampant in 2024, allows malicious projects to appear legitimate and reach unsuspecting users. While GitHub has removed many of the implicated accounts and repositories, the problem persists. Users are urged to carefully evaluate project quality and exercise caution when downloading software from GitHub.

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(www.bleepingcomputer.com)
Development Fake Stars

Medieval African Gold Purification: A Recycled Glass Secret

2025-06-06
Medieval African Gold Purification: A Recycled Glass Secret

The discovery of 11th-century gold coin molds in Mali revealed a sophisticated gold purification technique used by medieval West Africans. Unlike the cupellation method used by Europeans, these artisans ingeniously employed recycled glass and local materials. By melting the impure gold with glass, the impurities dissolved while the inert gold remained, resulting in highly refined metal. Scientists have replicated this process, highlighting the ingenuity and advanced metallurgical knowledge of medieval African craftsmen.

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(www.atlasobscura.com)
Tech metallurgy

Open-Source Tool Unveils the Inner Workings of Large Language Models

2025-05-29
Open-Source Tool Unveils the Inner Workings of Large Language Models

Anthropic has open-sourced a new tool to trace the "thought processes" of large language models. This tool generates attribution graphs, visualizing the internal steps a model takes to arrive at a decision. Users can interactively explore these graphs on the Neuronpedia platform, studying behaviors like multi-step reasoning and multilingual representations. This release aims to accelerate research into the interpretability of large language models, bridging the gap between advancements in AI capabilities and our understanding of their inner workings.

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(www.anthropic.com)
AI

The Humble Safety Pin: A History From Homer to Punk Rock

2025-05-14

This article traces the evolution of the safety pin from antiquity to the modern day. From jeweled pins mentioned in Homer's Odyssey and the ancient Roman fibula, to Walter Hunt's 1849 invention of the modern safety pin – a design that has remained virtually unchanged for centuries. The safety pin's journey continues, becoming a punk rock symbol, a crucial tool in sports, and an everyday necessity worldwide. Its simple elegance and cultural significance make it more than just a utilitarian object; in some cultures, it's even believed to ward off evil or bring good luck.

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(museumofeverydaylife.org)
Misc safety pin

Val Town Rewrites TypeScript Integration for Blazing-Fast Performance

2025-09-24
Val Town Rewrites TypeScript Integration for Blazing-Fast Performance

Val Town has completely rewritten its online editor's TypeScript integration, replacing the previous client-side Web Worker-based implementation with a cloud container-based Deno Language Server. This addresses issues with slow NPM package imports and TypeScript/Deno incompatibility in the old system, achieving 100ms deploy-on-save speeds. The new system leverages Cloudflare Containers to ensure user workload isolation and resource limits, and all code is open-sourced, providing developers with a smoother, more efficient TypeScript development experience.

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(blog.val.town)
Development Online Editor

Pope Francis on AI: History Repeats, Ethical Quandaries Resurface

2025-05-12
Pope Francis on AI: History Repeats, Ethical Quandaries Resurface

Pope Francis's call for respecting human dignity in the age of AI echoes Pope Leo XIII's 1891 encyclical Rerum Novarum, which addressed the social upheaval of the Industrial Revolution. Leo XIII condemned the exploitation of workers in horrific factory conditions. He rejected both unchecked capitalism and socialism, proposing Catholic social doctrine to uphold workers' rights. Similarly, AI now threatens employment and human dignity, prompting Pope Francis to advocate for the Church's moral leadership in navigating these new challenges, defending human dignity, justice, and labor rights.

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(arstechnica.com)
AI

The End of Cheap Imports? US De Minimis Exemption Scrapped

2025-09-02
The End of Cheap Imports? US De Minimis Exemption Scrapped

A few years ago, I easily found a unicorn rug on Etsy for half the price of Anthropologie's. This was thanks to the US de minimis exemption, allowing small import goods to enter duty-free. Now, the Trump administration has ended this nearly century-old policy, meaning higher tariffs on goods from all countries. This will lead to price increases, reduced availability, and longer shipping times for many items, impacting consumer habits. The end of the exemption not only increases shopping costs but also might kill niche markets and force us to reconsider our consumption habits, avoiding unnecessary overspending.

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(www.theatlantic.com)
Misc cross-border e-commerce

Old-School Clojure REPL Habits: A Grug's Approach

2025-04-09

A seasoned Clojure programmer shares his unique REPL workflow, eschewing cloud LLMs and external dependencies in favor of traditional tools and techniques. He emphasizes mastery of the Clojure standard library, leveraging the REPL for live code debugging and data inspection using tools like clojure.pprint and clojure.repl. He advocates for using tools like Clerk or org-mode to enhance the workflow and demonstrates how this dynamic approach can be applied to non-Clojure contexts. This article showcases a stark contrast to modern trends, offering a refreshing alternative perspective for developers.

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(www.evalapply.org)
Development

Fail-Safe AI Calls using OpenAI Library and Gemini API

2025-04-06

This article demonstrates a fail-safe approach to making AI calls using the OpenAI TS/JS library. The method allows for fallback to other OpenAI models if the Gemini API hits rate limits. A custom function allows developers to specify multiple AI models as alternatives, ensuring application stability and reliability. Type-safe structured output functions are also provided to simplify handling AI responses.

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(sometechblog.com)
Development AI calls fail-safe mechanism

The Copyright Conundrum of AI Training: Learning Rights vs. Labor Rights

2025-04-12

This article delves into the copyright implications of AI training. Some argue that training AI on copyrighted works requires licensing, establishing a "learning right." The author refutes this, stating AI training analyzes data, not copies it. The core issue is AI's exploitation of artists' labor, not copyright infringement. The author advocates for labor rights, not copyright expansion, as the latter benefits large corporations at the expense of independent artists.

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(blog.giovanh.com)
AI learning rights

Git-Bug: Revolutionizing Issue Management within Git Repositories

2025-05-14
Git-Bug: Revolutionizing Issue Management within Git Repositories

Git-Bug is a standalone, distributed, offline-first issue management tool that embeds issues, comments, and more as objects directly within your Git repository (not files!), allowing push/pull to multiple remotes. Leveraging Git's decentralized architecture, it enables offline work and seamless syncing, boasting lightning-fast search capabilities. It integrates with platforms like GitHub and GitLab via bridges and offers flexible interfaces (CLI, TUI, web). Created by Michael Muré and maintained by a vibrant community, it's released under the GPLv3 or later license.

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(github.com)
Development Issue Management

Mars Atmosphere Loss: Sputtering Caught in the Act

2025-05-30
Mars Atmosphere Loss: Sputtering Caught in the Act

For the first time, scientists have directly observed atmospheric sputtering, a key driver of Mars' ongoing atmospheric erosion. Nine years of satellite data revealed a correlation between argon density at high altitudes and the orientation of the solar wind's electric field, confirming sputtering and showing its strength is over four times higher than previously predicted. Solar storms dramatically increased the effect. This discovery is crucial for understanding Mars' atmospheric and water loss, and the habitability of early Solar System planets. The research is published in Science Advances.

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(www.sciencealert.com)
Tech Atmospheric Sputtering

US Could Lift Supersonic Flight Ban After 52 Years

2025-05-17
US Could Lift Supersonic Flight Ban After 52 Years

A bipartisan bill aims to lift the decades-long ban on supersonic flight over the continental US, contingent on eliminating ground-level sonic booms. Backed by figures like Elon Musk and with technological advancements from NASA, the bill seeks to allow a new generation of quieter supersonic jets. The legislation highlights a renewed competition with China, which is actively pursuing its own supersonic aviation goals. The history of sonic boom testing and the resulting ban are also explored, leading to renewed hope for faster air travel and American leadership in aviation.

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(www.theregister.com)
Tech

Resonate: A Low-Latency, Low-Memory, Low-Cost Spectral Analysis Algorithm

2025-04-15

Resonate is a low-latency, low-memory footprint, and low-computational-cost algorithm for evaluating perceptually relevant spectral information from audio (and other) signals. It builds on a resonator model using Exponentially Weighted Moving Average (EWMA) to accumulate signal contributions around resonant frequencies. Its compact iterative formulation allows for efficient updates with minimal arithmetic operations per sample, requiring no buffering. Resonate computes real-time perceptually relevant spectral content estimates; memory and per-sample computational complexity scale linearly with the number of resonators, independent of input sample count. Open-source implementations in Python, C++, and Swift are available, along with demonstration apps.

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(alexandrefrancois.org)
Development

NoteGen: AI-Powered Cross-Platform Note-Taking App

2025-06-05
NoteGen: AI-Powered Cross-Platform Note-Taking App

NoteGen is a cross-platform Markdown note-taking application leveraging AI to seamlessly bridge recording and writing. It supports various recording methods (screenshots, text, illustrations, etc.) and uses native Markdown for easy migration. Offline usage is supported, along with synchronization to GitHub and Gitee private repositories. AI enhancement allows users to configure various models like ChatGPT and Gemini for AI-assisted writing, polishing, and translation. Its core feature is the smooth transition from 'recording to writing,' boosting efficiency.

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(github.com)
Development AI Note-taking

Abracadabra Finance Suffers $13M Crypto Hack; Tornado Cash Connection?

2025-04-08
Abracadabra Finance Suffers $13M Crypto Hack; Tornado Cash Connection?

Decentralized finance (DeFi) platform Abracadabra Finance was hit with a hack resulting in the loss of approximately $13 million in cryptocurrency. The attack targeted the platform's isolated lending markets, known as "cauldrons." The exploit went undetected until the attacker executed multiple transactions. Abracadabra Finance is investigating with security firms and is offering a 20% bounty on the stolen funds. Some security firms link the attack to decentralized exchange GMX, though GMX denies involvement. Investigators suspect the funds used in the attack originated from Tornado Cash, recently desanctioned by the US Treasury.

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(therecord.media)
Tech

UK's Economic Paradox: Rich Yet Broke?

2025-04-04
UK's Economic Paradox: Rich Yet Broke?

Despite being the world's 6th largest economy with decades of high tax revenue, Britain faces a significant economic paradox: widespread financial strain. The article explores two key factors contributing to this: insufficient public and private investment, hindering economic growth; and shockingly inefficient public spending, evidenced by the NHS and defense procurement. The author argues for sweeping reforms to address waste and inefficiency, paving the way for economic improvement.

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(martinrobbins.substack.com)
Startup Fiscal Crisis Public Investment

Don't Sell Space on Your Home Server!

2025-04-13
Don't Sell Space on Your Home Server!

A tech worker from a medium-sized hosting company details the perils of turning your home server into a makeshift cloud service. The article highlights the need for additional hardware, faster internet, public IPs, a secure location, legal protection, and robust billing systems. It also stresses the challenges of handling customer support, data backups, security vulnerabilities, and compliance with regulations like GDPR and CCPA, along with mitigating risks like DDoS attacks and data breaches. Instead of risking legal and financial repercussions, the author suggests using excess computing power for personal needs, sharing with friends, or donating cycles to research projects.

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(grumpy.systems)
Development home server risks

Hacker News: C64 Audio/Video Cable Swap Demo

2025-04-20

At Revision 2025, a demo called "Signal Carnival" showcased a groundbreaking feat: swapping the audio and video cables of a Commodore 64 and still producing meaningful audio and video. This isn't a simple miswiring; it cleverly uses the C64's VIC and SID chips, driving audio with the video signal and vice versa. The demo even plays audio during loading, featuring a custom loader with on-the-fly GCR decoding. This demonstrates the unexpected potential of the C64 and impressive programming skills.

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(www.quiss.org)
Game

Updated: Introduction to Programming Languages Textbook

2025-09-24

Professors Jaemin Hong and Sukyoung Ryu from KAIST have released an updated version of their textbook, "Introduction to Programming Languages." This introductory book covers fundamental programming language concepts, including syntax, semantics, type systems, and interpreter/type-checker implementations. The authors encourage its use by anyone learning or teaching these concepts and acknowledge the contributions of students and teaching assistants. The latest edition features typo corrections and reduced page margins.

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(hjaem.info)
Development

Phoronix Benchmarks AMD Ryzen AI Max PRO 390 & Radeon 8050S Integrated Graphics

2025-06-06

Phoronix published a comprehensive Linux benchmark review of AMD's Ryzen AI Max PRO 390 processor and its integrated Radeon 8050S graphics. The Radeon 8050S, featuring 32 cores at 2.8GHz, slots between the Radeon 8060S and 890M in performance. Supporting resolutions up to 8K@60Hz, the review includes various game and benchmark tests, comparing it against other integrated graphics from AMD and Intel. The Radeon 8050S showed excellent out-of-the-box performance on Ubuntu 25.04 and Fedora 42.

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(www.phoronix.com)
Hardware Integrated Graphics

800-Year-Old Kid's Doodles: A Glimpse into Medieval Childhood

2025-04-16
800-Year-Old Kid's Doodles: A Glimpse into Medieval Childhood

Soviet archaeological excavations unearthed birch bark sketches from medieval Novgorod, circa 1250 CE, created by a schoolboy named Onfim. His whimsical drawings—horses, soldiers, self-portraits—reveal the expressive capabilities of medieval children. Contrasting this are charcoal drawings found in a French iron mine, depicting child miners, a poignant reflection of their harsh reality. These discoveries offer a unique perspective on premodern childhood, highlighting its universality and diverse experiences across time and culture.

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(resobscura.substack.com)
Misc Medieval children Art history Archaeological discovery

Shallow Understanding of Tech: Good Enough is Good Enough

2025-05-27

The author argues that a shallow understanding of the technologies engineers use is sufficient. Deep dives into database indexes, large language models, etc., enable better decision-making; for example, choosing appropriate models for JSON output and avoiding errors caused by limitations in smaller models. Instead of going deep in one area, the author advocates for broad knowledge across many areas to better adapt to new trends. Learning new technologies should focus on understanding fundamental principles and explaining them simply to others, while using LLMs for fact-checking to ensure accuracy.

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(www.seangoedecke.com)
Development

arXivLabs: Experimenting with Community Collaboration

2025-04-19
arXivLabs: Experimenting with Community Collaboration

arXivLabs is a framework enabling collaborators to develop and share new arXiv features directly on the website. Individuals and organizations involved embrace arXiv's values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only partners with those who share them. Have an idea to enhance the arXiv community? Learn more about arXivLabs.

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(arxiv.org)
Development
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