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Mathpad: Effortless Equation Typing with a Dedicated Keypad

2025-05-26
Mathpad: Effortless Equation Typing with a Dedicated Keypad

Mathpad is a keypad designed for engineers, scientists, students, and STEM professionals who frequently work with equations. It allows for easy input of 112 symbols from algebra, calculus, set theory, and logic, plus the entire Greek alphabet. Connecting via USB-C, Mathpad works seamlessly with your existing keyboard on Windows, macOS, and virtually all Unix systems. It supports multiple output modes including plaintext, LaTeX, and the Microsoft Office equation editor. The open-source hardware project will soon be available on Crowd Supply.

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(github.com)
Hardware hardware keyboard math input

Excel's MAP Function: Functional Mapping of Array Elements

2025-04-04

Excel's MAP function offers a powerful way to process arrays. It transforms each element in an array using a custom LAMBDA function and returns a new array. You can input multiple arrays, and the LAMBDA function will calculate the elements at corresponding positions. This makes batch data processing concise and efficient; simply define the calculation formula, and the MAP function automatically completes the mapping of all elements.

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(support.apple.com)
Development MAP function LAMBDA function

Conquering Japanese Writing: Hiragana, Katakana, and Kanji

2025-03-27

Learning Japanese begins with its intricate writing system: Hiragana, Katakana, and Kanji. This article provides a clear explanation of how these three scripts are used, their historical evolution, the Joyo Kanji list, and the JLPT. It also offers learning tips, guiding learners to master this system step-by-step, ultimately enabling fluent reading and writing in Japanese.

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(www.kanjimaster.ai)
Development Japanese learning Kanji Writing System

The Man Keeping 70-Year-Old Pinball Machines Alive

2025-01-06
The Man Keeping 70-Year-Old Pinball Machines Alive

Steve Young, a metallurgical engineer with a lifelong passion for pinball, has built The Pinball Resource, a unique business that supplies parts and expertise for repairing vintage pinball machines. His vast collection of rare parts and schematics, accumulated over 50 years, makes him the go-to resource for enthusiasts worldwide. Operating out of an unassuming workshop, Young eschews modern marketing, relying instead on word-of-mouth and a reputation for trust and expertise to maintain his thriving, old-school business.

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(arstechnica.com)
Game vintage games pinball

Make Ubuntu Packages 90% Faster: A Tale of Recompilation and Allocators

2025-03-19
Make Ubuntu Packages 90% Faster: A Tale of Recompilation and Allocators

This post details how recompiling the jq source package used by Ubuntu resulted in a staggering 90% performance improvement. The author benchmarked against a 500MB GeoJSON file. Simply rebuilding the package yielded a small but noticeable speedup. Further optimizations included using clang with better flags (-O3, -flto, -DNDEBUG), which provided a 20% boost. Switching to the TCMalloc allocator improved performance by another 40%. Finally, using mimalloc, either dynamically loaded or integrated during the rebuild, resulted in the remarkable 90% speed increase. The recompiled jq with mimalloc is nearly twice as fast as the default Ubuntu package in various tests.

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(gist.github.com)
Development compilation optimization memory allocation

Troubleshooting Amazon EKS Authentication Error: "You must be logged in to the server (Unauthorized)"

2025-02-18
Troubleshooting Amazon EKS Authentication Error:

Encountering the "You must be logged in to the server (Unauthorized)" error when connecting to the Amazon EKS API server? This usually happens because the IAM entity configured in kubectl isn't authenticated by Amazon EKS. This guide details solutions for two scenarios: you are the cluster creator or you are not. If you're the cluster creator, verify that the IAM entity configured for the AWS CLI matches the one used to create the cluster and update your kubeconfig file using `aws eks update-kubeconfig`. If not, map your IAM entity to the aws-auth ConfigMap using `eksctl create iamidentitymapping` or by manually editing the ConfigMap. Finally, don't forget to check CloudWatch logs for troubleshooting.

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(repost.aws)
Development

NVIDIA's RTX 50 Series: A Disaster Fueled by Monopoly?

2025-07-05
NVIDIA's RTX 50 Series: A Disaster Fueled by Monopoly?

Since the disastrous launch of the RTX 50 series, NVIDIA has faced a barrage of criticism: scalpers control stock, prices far exceed MSRP, power connectors continue to melt, marketing is deceptive, GPUs arrive with missing components, drivers are unstable, and NVIDIA is accused of manipulating media narratives. This reflects a growing indifference to consumer needs, prioritizing data center GPU profits. The RTX 50 series not only perpetuates the 12VHPWR connector melting issues but introduces Multi-Frame Generation (MFG) in drivers, sacrificing image quality for higher frame rates, resulting in blurry visuals. Accusations of intimidating reviewers to influence reviews further damage their reputation. The RTX 50 series launch showcases the negative consequences of NVIDIA's monopoly, harming consumers.

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(blog.sebin-nyshkim.net)
Hardware

London Suburb Dweller's Megawatt-Hour Battery Dream

2025-09-15
London Suburb Dweller's Megawatt-Hour Battery Dream

A London suburban resident attempts to calculate the battery size needed for complete home energy self-sufficiency. Using data from their solar panels (generating 3800 kWh annually, matching their consumption), and years of data analysis, they find a massive 1068 kWh (nearly a megawatt-hour) battery is required to store summer's excess energy for winter use. While currently unrealistic due to technology and cost, they remain optimistic about future battery technology advancements and price drops, envisioning a future where every home has such a battery, achieving complete solar self-sufficiency.

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(shkspr.mobi)
Tech batteries energy self-sufficiency

Simplified Omarchy Installation on CachyOS

2025-09-15
Simplified Omarchy Installation on CachyOS

This project offers a script for installing DHH's Omarchy desktop configuration on CachyOS, a performance-optimized Arch Linux distribution. Omarchy, a Hyprland-based setup, prioritizes simplicity and productivity. The script streamlines the installation but requires familiarity with Arch Linux. It doesn't install CachyOS or handle partitioning, formatting, or encryption; users must do this beforehand. The script opts for Yay (AUR helper) and Fish (shell), retaining CachyOS's Tealdeer and Omarchy's Mise. Importantly, it doesn't install a display manager or autostart Hyprland unless already installed by CachyOS. No warranty is provided; use at your own risk.

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(github.com)
Development

Deep Dive: Humans to Test Underwater Habitat in 2025

2025-01-06
Deep Dive: Humans to Test Underwater Habitat in 2025

British startup Deep is pioneering underwater living with its Sentinel project, a modular habitat slated for completion in 2027. Utilizing advanced 3D printing and welding, Sentinel will enable scientists to live and work at depths up to 200 meters for extended periods. A smaller, transportable habitat called Vanguard, launching in 2025, will serve as a testbed. Vanguard can house three divers for up to a week, demonstrating the potential to dramatically increase the efficiency of ocean research and enhance our understanding of marine ecosystems in the face of climate change.

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(spectrum.ieee.org)
Tech Underwater Habitat Ocean Exploration 3D Printing

10 Awesome D Language Features You Should Know

2025-07-03

This beginner-friendly post explores ten captivating features of the D programming language. From smaller quality-of-life improvements to major features like automatic constructors, design by contract, compile-time function execution (CTFE), and built-in unit testing, the article provides clear explanations. D's powerful metaprogramming capabilities are also highlighted, rivaling few statically compiled languages in flexibility and modeling power. The post also covers unique D syntax features such as the dollar operator, parenthesis omission, and uniform function call syntax (UFCS), significantly improving code readability and efficiency. Additionally, D supports scoped and selective imports and a built-in documentation generator, further enhancing code maintainability and readability. In short, D offers a compelling blend of features for efficient and convenient programming.

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(bradley.chatha.dev)
Development Features

DeepSeek R1 Lands on Azure AI Foundry and GitHub

2025-01-29
DeepSeek R1 Lands on Azure AI Foundry and GitHub

Microsoft announced that the DeepSeek R1 model is now available on Azure AI Foundry and GitHub. Joining a diverse portfolio of over 1800 models, DeepSeek R1 offers a powerful, cost-effective AI solution enabling seamless integration of advanced AI for businesses. Rigorously tested for security and featuring built-in content safety filtering, DeepSeek R1 provides a secure and reliable environment for AI deployment. Azure AI Foundry allows developers to rapidly experiment, iterate, and integrate AI into their workflows with built-in model evaluation tools for increased efficiency.

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(azure.microsoft.com)
AI AI Model

The Optimal Line Length for Code: Unraveling the 88-Character Mystery

2025-08-12

This article delves into the age-old debate of optimal line length in coding standards. It traces the history of the 80-character limit back to physical constraints of teletypes and punch cards, then explores the scientific basis for line length limitations rooted in human visual perception. While acknowledging the advantages of wide screens, the author argues that excessively long lines reduce readability. The article ultimately advocates for a 88-character maximum, justifying the choice through considerations of indentation, diff tool compatibility, and overall code clarity.

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(blog.glyph.im)
Development readability coding standards

libxml2 Maintainer Steps Down

2025-09-18
libxml2 Maintainer Steps Down

Nick Wellnhofer, the maintainer of libxml2, announced his resignation, leaving the project largely unmaintained. He will address regressions in the 2.15 release until the end of 2025. The news prompted widespread appreciation and concern from the community. Many developers expressed gratitude for the long-term maintenance of libxml2, and one offered to take over maintenance, albeit with some technical questions requiring clarification from the former maintainer.

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(discourse.gnome.org)
Development

Blinkenlights: A Glimpse into Hacker Culture

2025-01-20
Blinkenlights: A Glimpse into Hacker Culture

Blinkenlights, a term originating from a deliberately misspelled German warning sign in hacker culture, refers to the diagnostic blinking lights on the front panels of old mainframe computers. As CPUs sped up, interpreting these lights became impossible in real-time. However, they persist as status indicators on modern network hardware and remain a unique symbol of tech culture, a nostalgic nod to the past.

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(en.wikipedia.org)
Tech hacker culture indicator lights

The Evolution of PuTTY's Icons: From Hand-Drawn to SVG

2025-03-12

This article chronicles the evolution of PuTTY's icons from hand-drawn images in the 1990s to today's scalable SVG vectors. The author initially created 32x32 pixel icons using the MSVC icon editor, constrained by the 16-color palette and display technology of the time. Over time, to accommodate higher resolutions and the needs of various tools, the author refined the process, eventually developing a script that auto-generates icons in multiple sizes and formats. This culminated in SVG versions, achieving true scalability. The design philosophy remains simple and clear, reflecting PuTTY's 'reassuringly old-fashioned' style, and continues to be used to this day.

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(www.chiark.greenend.org.uk)
Development Icon Design

Pocket Read-It-Later App Shutting Down in 2025

2025-05-22

The popular read-it-later app, Pocket, will be shutting down on July 8, 2025. Users will have until October 8, 2025 to export their saved content before all data is permanently deleted. The decision comes as user web browsing habits evolve, and Mozilla is refocusing resources on projects better aligned with those habits. Pocket's email newsletter will be rebranded as "Ten Tabs" and continue offering curated content.

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(support.mozilla.org)
Misc read-it-later shutdown

The Death of SSL Certificate Management (as We Know It)

2025-08-26

Managing SSL certificates is becoming a nightmare. What was once a quarterly task is now a weekly struggle, driven by increasingly stringent validation requirements and drastically shortened certificate lifespans—down to a mere 47 days by 2029! This escalating burden is pushing organizations towards platform-integrated certificate management or free alternatives like Let's Encrypt, potentially disrupting the traditional CA market. The author questions whether these changes genuinely enhance security or simply add unnecessary overhead for already strained IT teams.

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(www.chrislockard.net)
Development certificate management

The Canadian Music Industry's Struggle: Indie Artists in the Streaming Era

2025-06-29
The Canadian Music Industry's Struggle: Indie Artists in the Streaming Era

This article explores the struggles of the Canadian music industry, particularly the immense challenges faced by independent musicians. From Cadence Weapon's unequal contract with a record label to meager streaming royalties, high touring costs, and the impact of AI technology, independent artists are struggling to make a living. The article examines government funding, copyright reform, and artists' own efforts as possible solutions, ultimately concluding that independent musicians need to reassess their value and actively explore new business models to survive in the harsh industry competition.

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(thewalrus.ca)
Misc

Fintech Unicorn Solid Files for Bankruptcy: The Price of Hypergrowth

2025-04-11
Fintech Unicorn Solid Files for Bankruptcy: The Price of Hypergrowth

Solid (formerly Wise), a fintech startup once valued at $330 million, has filed for Chapter 11 bankruptcy protection. Despite claims of 10x revenue growth, profitability, and 100 customers, the company crumbled under the weight of failed fundraising and a costly legal battle with investor FTV Capital. FTV accused Solid of misrepresenting revenue and customer numbers, while Solid countersued, alleging strong-arm tactics by FTV. The lawsuit settled, but Solid, now down to three employees, is pursuing bankruptcy restructuring. Solid's downfall serves as a cautionary tale for rapidly expanding fintechs and highlights the challenges of the current funding environment.

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(techcrunch.com)
Startup

Playstacean: A Crab-Themed PSOne Mod Takes Meme to Reality

2025-03-29
Playstacean: A Crab-Themed PSOne Mod Takes Meme to Reality

YouTuber GingerOfOz brought the meme-ified 'Playstacean' to life, a crab-shaped PlayStation One mod based on concept art by Anh Dang. This isn't just a reskin; it features functional crab claw controllers and intricate internal modifications. The build involved 3D printing, controller port adjustments, and wiring challenges. While GingerOfOz isn't releasing the design files yet, this unique creation will be showcased at the Midwest Gaming Classic.

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(gizmodo.com)
Game console mod

Dune vs. Lawrence of Arabia: A Comparative Analysis

2025-03-04
Dune vs. Lawrence of Arabia: A Comparative Analysis

This article explores the similarities and differences between Frank Herbert's *Dune* and T.E. Lawrence's *Seven Pillars of Wisdom*. Both Paul Atreides and Lawrence function as outsiders who immerse themselves in desert cultures to lead indigenous populations against their oppressors. However, significant contrasts emerge in their portrayals of the Arabs and Fremen, their treatment of women and religion, and their emotional responses. Lawrence reveals profound self-doubt and guilt over his actions, while Paul displays excessive confidence and a ruthless pursuit of power. Furthermore, *Dune* features prominent female characters and a rich tapestry of religious themes, absent in Lawrence's largely male-centric and religiously understated narrative. While *Dune* draws inspiration from *Seven Pillars*, it ultimately forges a unique and compelling world of its own.

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(reactormag.com)
Misc literary comparison Lawrence of Arabia

Google Photos API Change Breaks Auto-Sync for Digital Photo Frames

2025-03-07
Google Photos API Change Breaks Auto-Sync for Digital Photo Frames

Google's upcoming change to its Google Photos API will break the auto-sync features of digital photo frames from companies like Aura and Cozyla. While intended to improve user privacy, this change will prevent frames from automatically updating slideshows. Aura is proactively disabling its Google Photos auto-sync on March 17th, 2025, requiring users to manually add photos. Although Google claims to be developing new APIs for digital photo frames, this won't replace the removed auto-sync functionality, causing inconvenience to users.

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(www.theverge.com)
Tech Digital Photo Frames API Change

AI Art: A Dreamlike Silver-Haired Princess

2025-03-08
AI Art: A Dreamlike Silver-Haired Princess

This AI-generated artwork depicts a princess with flowing silver hair and violet eyes, elegantly seated in a magically glowing pond, adorned in a stunning white and purple gown with floral accents. Surrounded by butterflies and petals, the image is exquisitely detailed, dreamy, and evokes a fantastical atmosphere. The intricate shading and lighting showcase advanced AI art capabilities.

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(www.gentube.app)
Design dreamlike princess

American Wealth Doesn't Guarantee a Longer Life: Study Reveals Systemic Issues

2025-04-04
American Wealth Doesn't Guarantee a Longer Life: Study Reveals Systemic Issues

A study of over 73,000 adults in the US and Europe reveals a shocking disparity: the wealthiest Americans have lower life expectancies than their European counterparts. The survival rate gap between the richest and poorest in the US far exceeds that seen in European nations. Even the poorest Americans fare worse than the poorest in Europe. Beyond healthcare access and social safety nets, the researchers suggest systemic factors like diet, environment, behavior, and cultural differences contribute to this uniquely American phenomenon of shorter lifespans, even among the wealthy. This highlights the deep-seated systemic issues impacting health outcomes in the US.

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(arstechnica.com)
Misc health disparity life expectancy socioeconomic inequality

Interactive Simulation of Cardiac Reentrant Arrhythmias

2025-04-01

This article uses an interactive simulation to explain the mechanism of cardiac reentrant arrhythmias. The simulation demonstrates the activation, refractory period of cardiomyocytes, and how a self-sustaining loop of activation can form, leading to arrhythmias. By changing simulation parameters, such as the refractory period and spontaneous activation rate of cardiomyocytes, different types of arrhythmias, such as atrial fibrillation and ventricular fibrillation, can be observed. This simulation helps to understand the mechanism of arrhythmias and the role of treatments such as defibrillation.

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(jenevoldsen.com)
Misc cardiology arrhythmias medical simulation

Rust Reflection: The Tug-of-War Between Safety and Access Rules

2025-01-03

Rust lacks reflection, a feature many developers desire. This article delves into the safety challenges of implementing reflection in Rust. Due to Rust's memory safety guarantees, a reflection API must adhere to strict access rules, preventing arbitrary access to private fields to avoid memory safety vulnerabilities. The author explores how these limitations impact reflection API design, such as handling reflection failures and expressing complex reflection bounds. The trade-offs between safe and unsafe reflection APIs are also discussed, along with balancing functionality and security. Ultimately, creating a safe reflection mechanism in Rust is a complex and challenging problem requiring careful consideration of various factors.

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(fractalfir.github.io)
Development Reflection

Is America in Decline? Or is it an Information Warfare?

2025-01-07
Is America in Decline? Or is it an Information Warfare?

This article examines the paradox of America's seemingly prosperous economy juxtaposed against widespread public anxiety, distrust in government, and pessimism about the future. The author argues this isn't a genuine decline, but rather the result of information warfare waged by external forces, linked to Russia. These forces utilize disinformation campaigns, social media manipulation, and other tactics to sow discord and instability. The article highlights the role of 'anti-cult' organizations employing information terrorism, demonizing groups through media, fostering division, and even contributing to extreme events like school shootings. The ultimate goal, the author claims, is to incite civil war. The article calls for vigilance against disinformation, exposure of anti-cult organizations, and measures to safeguard American stability.

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(actfiles.org)
Misc Information Warfare Social Anxiety Anti-Cult Organizations

Meta Shifts to Community Moderation, Loosens Content Restrictions

2025-01-07
Meta Shifts to Community Moderation, Loosens Content Restrictions

Meta announced it's ending its third-party fact-checking program in the US, shifting to a community-driven model called Community Notes. This aims to reduce over-moderation, allow for more free speech, particularly on political and social issues, while focusing enforcement on illegal and high-severity violations. Meta will also personalize political content feeds. This reflects a renewed commitment to free expression, but raises questions about information accuracy and platform responsibility.

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(about.fb.com)
Tech Content Moderation
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