Building a Game Boy Emulator in OCaml: A Developer's Journey

2025-07-04
Building a Game Boy Emulator in OCaml: A Developer's Journey

This article chronicles the development of CAMLBOY, a Game Boy emulator written in OCaml and running in the browser. The author details the architecture, interface design using functors and GADTs for testability and reusability, instruction set implementation, performance optimization, and JavaScript compilation. The process involved extensive use of test ROMs for integration testing and exploratory programming. The author also shares insights and reflections on the OCaml ecosystem and language features, highlighting both strengths and weaknesses.

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Development

Samsung to Mass Produce World's First Rollable OLED Laptop Screen

2025-01-10
Samsung to Mass Produce World's First Rollable OLED Laptop Screen

Samsung Display will begin mass production of the world's first rollable OLED screen for laptops in April 2025. This screen will be featured in Lenovo's ThinkBook Plus G6 Rollable laptop, launching globally in June. The screen expands from a 14-inch 5:4 aspect ratio to a 16.7-inch 8:9 aspect ratio, offering a unique mobile computing experience. Samsung also incorporates its unpolarized Eco² OLED™ technology for the first time in a laptop, reducing panel thickness and power consumption by 30%.

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SVG: Scalable Vector Graphics for Web Design

2025-03-09
SVG: Scalable Vector Graphics for Web Design

This article answers common questions about SVG (Scalable Vector Graphics), covering its definition, image conversion methods, advantages over other formats like PNG and JPEG, sources for free resources, HTML usage, animation techniques, responsive design implementation, optimization, and editing tools. Web designers and developers alike will find practical information on using SVG.

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Design

AI-Powered Lease Analysis: Negotiate Your Rental Agreement Like a Pro

2025-03-17

This AI-powered platform empowers you to master your rental agreement. It analyzes your lease, uncovering potential problems, unfavorable terms, and negotiation opportunities. Gain a clear understanding of your tenant rights, receive expert negotiation advice, and easily decipher complex legal jargon. The platform also provides jurisdiction-specific insights, ensuring your lease analysis is tailored to your local laws and regulations. Rent smarter, not harder.

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Debunking Social Media Personality Tests: Psychological Myths or Scientific Discoveries?

2025-02-20
Debunking Social Media Personality Tests: Psychological Myths or Scientific Discoveries?

Social media is abuzz with personality tests claiming to reveal insights into your character based on your initial perception of ambiguous images. Researchers investigated this, using classic ambiguous images (Duck-Rabbit, Rubin's Vase, Young-Old Woman, Horse-Seal) and personality questionnaires. Many social media claims proved unsubstantiated; for example, seeing the rabbit first didn't correlate with procrastination. However, intriguing associations emerged, such as lower optimism and emotional stability in those who saw the duck first. This study highlights the prevalence of psychological myths on social media while suggesting promising avenues for future research.

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Small but Mighty: Redefining Success in the Software Industry

2025-02-18

This article explores how small software companies can thrive against tech giants. The author highlights examples like SQLite, Hwaci, Pinboard, Tarsnap, Sublime Text, and Zig, showcasing their success despite their small size. These companies prioritize high-quality products, unique business models, and customer focus for long-term sustainability. They reject Silicon Valley's 'grow or die' mentality, opting for a more sustainable and fulfilling definition of success. Their human-centric approach fosters strong customer relationships. The author argues that this 'small but mighty' model isn't about lacking ambition, but choosing a different path to success.

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Deel CEO Implicated in Espionage Scandal: Former Employee's Confession Reveals Details

2025-04-02
Deel CEO Implicated in Espionage Scandal: Former Employee's Confession Reveals Details

Deel CEO Alex Bouaziz is embroiled in a corporate espionage scandal. Former Rippling employee Keith O'Brien, in a sworn Irish affidavit, admitted to being hired by Deel to spy on competitor Rippling, acting on instructions from CEO Alex Bouaziz. O'Brien stated he communicated with Alex Bouaziz and Deel's CFO (Alex's father, Philippe Bouaziz) via Telegram and received payment for his actions. The incident has garnered attention from the Irish press, and Rippling has filed a lawsuit against Deel.

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Chat UIs Are a Bad Fit for Real Development Tools

2025-02-04

This article argues that chat interfaces are fundamentally unsuitable for serious software development. While AI promises to make programming more intuitive with natural language, the author contends that building robust software requires precision and explicit documentation, not guesswork. Chat interfaces hinder the ability to track changes, manage complexity, and ultimately deliver production-ready software. The article posits that the future of AI development tools lies in document-centric interfaces, allowing for clear specifications and systematic development.

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Development

DOOMQL: A Multiplayer DOOM Clone Written Entirely in SQL

2025-09-10
DOOMQL: A Multiplayer DOOM Clone Written Entirely in SQL

A developer built DOOMQL, a multiplayer DOOM-like shooter, entirely in SQL using the CedarDB database. The game stores all game data—maps, players, enemies—in the database, leveraging SQL views for raycasting and sprite projection. A simple shell script drives the game loop. Surprisingly, this approach works remarkably well, achieving a smooth 30 FPS and effortless multiplayer functionality thanks to the database's inherent concurrency handling. While maintenance and debugging might be challenging, the experiment showcases SQL's potential in game development and CedarDB's impressive performance.

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Game

600 Million Years of Shared Stress Response in Algae and Plants

2025-03-24
600 Million Years of Shared Stress Response in Algae and Plants

A University of Göttingen-led study reveals a surprising shared stress response network between algae and plants dating back 600 million years. Researchers compared gene expression and compound production in moss and two types of algae under environmental stress, identifying a common gene regulatory network. This discovery sheds light on key mechanisms of plant adaptation to land and offers new insights into plant evolution.

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Generating Complex Logic Puzzle Maps with WFC

2025-06-23
Generating Complex Logic Puzzle Maps with WFC

Logic Islands, a puzzle game, features six different rulesets for its maps. Initially, the developer used a traditional backtracking algorithm, but for three rulesets, map generation failed beyond 7x7. To overcome this, the developer cleverly applied the Wave Function Collapse (WFC) algorithm. By redefining tile types and their connection relationships, and setting constraints based on different rules, the developer successfully used WFC to generate large maps (up to 12x12) that satisfy various rules, solving the previous map generation problem. This case demonstrates the power of the WFC algorithm in generating complex logic puzzle maps and the importance of thinking about problems from different angles.

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US Halts $5 Billion Electric Vehicle Charging Station Program

2025-02-07
US Halts $5 Billion Electric Vehicle Charging Station Program

The US Department of Transportation has ordered states to halt their plans for the National Electric Vehicle Infrastructure (NEVI) program, a $5 billion initiative to fund the construction of electric vehicle charging stations. This decision, which may be illegal, could impact charging stations already under construction and harm businesses that have invested in the program. Tesla has also received $31 million in awards from the program. The move appears to contradict court orders and the Administrative Procedures Act.

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The Art of Communication: How Well-Intentioned Advice Can Backfire

2025-02-27
The Art of Communication: How Well-Intentioned Advice Can Backfire

The author recounts a workplace communication mishap: his honest assessment of the team's shortcomings, intended as encouragement for improvement, unintentionally offended colleagues and potentially caused negative consequences. This led to a realization that even with good intentions, individual perspectives and communication styles can lead to misunderstandings. The article emphasizes the importance of avoiding direct personal criticism when advocating for improvement, focusing instead on the team as a whole, using a collective opportunity-oriented approach, respecting others' feelings, and carefully choosing the timing and method of communication.

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Misc

Building OTP Authentication from Scratch: Unraveling HOTP and TOTP

2025-04-15
Building OTP Authentication from Scratch: Unraveling HOTP and TOTP

This post dives deep into the inner workings of One-Time Password (OTP) algorithms, HOTP and TOTP. Starting with the author's experience implementing authentication at work, it explains the security benefits of OTPs and details the HMAC-based OTP generation process, including key hashing, timestamp calculations, and final code generation. A demo app built by the author is also provided for readers to learn and test.

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Development

Mexico to Sue Google Over 'Gulf of America' Naming on Maps?

2025-02-18
Mexico to Sue Google Over 'Gulf of America' Naming on Maps?

Mexico is threatening legal action against Google after the tech giant refused to fully restore the name "Gulf of Mexico" to its maps service. The dispute stems from a decision during the Trump administration to refer to the body of water as the "Gulf of America." Google maintains its current policy, using "Gulf of America" in the US and "Gulf of Mexico" elsewhere, citing impartial mapping practices. Mexico argues this violates its sovereignty, as it controls a significant portion of the gulf. The controversy has also highlighted tensions between the US and Mexico, and raised concerns about press freedom in the US after the White House barred AP reporters from events due to their continued use of "Gulf of Mexico."

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From New Grad to Meta Staff Engineer in 3 Years: Evan King's Success Story

2024-12-14
From New Grad to Meta Staff Engineer in 3 Years: Evan King's Success Story

Evan King shares his journey of rapidly advancing from a new graduate to a Staff Engineer at Meta in just three years. His six key principles for success include: prioritizing speed and efficiency to free up time for growth; broadening perspective to think strategically like a higher-level engineer; embracing uncertainty and sharing ideas freely; focusing on problem-solving over technical complexity; building goodwill and strong relationships; and maintaining a positive attitude. While acknowledging the role of luck and timing, Evan emphasizes the importance of cultivating sustainable habits that compound over time, focusing on core competencies and strategically utilizing the extra bandwidth created by efficiency.

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Camembert Cheese May Improve Cognitive Decline

2024-12-27
Camembert Cheese May Improve Cognitive Decline

A new study has found that fatty acid amides present in Camembert cheese can improve cognitive decline in mice. Researchers used the object recognition test and found that orally administered Camembert cheese improved cognitive decline induced by a high-fat diet. Further investigation revealed that myristamide (MA), a fatty acid amide produced during Camembert cheese fermentation, improved cognitive decline, while its non-amidated counterpart, myristic acid, did not. This suggests that fatty acid amidation may be crucial for this physiological activity. Furthermore, MA increased the expression of brain-derived neurotrophic factor (BDNF) in the hippocampus.

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Hacker News: A Decade of Tech Growth

2025-03-18
Hacker News: A Decade of Tech Growth

Starting in 2011, the author began using Hacker News, initially understanding very little of the technical jargon and companies mentioned. However, through daily reading and deep dives into unfamiliar concepts, the author transformed from a data analyst into an engineer confidently deploying code to millions of users. Hacker News provided not only learning resources but also a supportive community, helping the author improve technical skills and writing, ultimately leading to a significant career leap.

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Development technical learning

Bio-Computer Plays Pong: A New Era of Biological AI?

2025-03-05
Bio-Computer Plays Pong:  A New Era of Biological AI?

Australian startup Cortical Labs unveiled CL1, a biological computer powered by hundreds of thousands of living human neurons. Accessible via a cloud-based "Wetware-as-a-Service" system, CL1 boasts low power consumption and rapid learning capabilities, promising applications in disease modeling, drug testing, and biological AI. While CL1's learning abilities currently lag behind traditional AI, its unique biological properties offer advantages in specific applications; it has already taught neurons to play Pong. However, ethical concerns have been raised, prompting the team to collaborate with bioethicists to ensure safety and responsible development.

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Oregon's $1.5 Trillion Lithium Deposit: Boom or Bust?

2025-05-10
Oregon's $1.5 Trillion Lithium Deposit: Boom or Bust?

A massive lithium deposit in Oregon's McDermitt Caldera, estimated at $1.5 trillion, promises a boost to domestic battery production but sparks concerns about environmental damage and cultural impacts. While proponents highlight the potential for economic development and reduced reliance on foreign lithium, opponents worry about the effects on sensitive wildlife habitats and sacred Indigenous sites. The debate mirrors similar controversies in Nevada, focusing on water resources and the long-term ecological consequences of large-scale extraction. The question remains whether the economic benefits outweigh the potential environmental and cultural costs.

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US Coastal Sea Level Report: Acceleration Trends Significant

2025-05-11
US Coastal Sea Level Report: Acceleration Trends Significant

William & Mary's Batten School and VIMS released their 2024 U.S. sea level "report cards," providing updated analyses of sea level trends and projections for 36 coastal communities. The report cards, encompassing 55 years of historical data, aid planning and adaptation by analyzing rates of sea level rise and acceleration at each locality and forecasting 2050 water levels. This year's report cards are consolidated in an interactive dashboard and add data from several new tide gauge stations. While most locations show continued acceleration of sea level rise, the West Coast remains relatively stable, and the Southeast is experiencing significant acceleration, potentially linked to Greenland ice sheet melt.

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Evolution of the Micro Journal: A Distraction-Free Writing Device

2025-02-24
Evolution of the Micro Journal: A Distraction-Free Writing Device

Un Kyu Lee's Micro Journal is a fascinating evolution of distraction-free writing devices. Starting with a Raspberry Pi and a mechanical keyboard, the project iterated through several versions, each addressing different needs and design challenges. From the foldable Rev.2.ReVamp to the Cherry MX hot-swappable Rev.6, each Micro Journal iteration improves on portability, customization, and the overall writing experience. Rev.7 offers a traditional keyboard layout, while Rev.5 allows connection to a wide range of mechanical keyboards. The story showcases the maker spirit and a relentless pursuit of the perfect writing experience, attracting significant media attention along the way.

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Taming the Internet Beast: A Smart Home Approach to Moderation

2025-06-22
Taming the Internet Beast: A Smart Home Approach to Moderation

Tired of internet distractions, the author built a smart home system to control social media access. Using AdGuard Home, Home Assistant, and a Zigbee smart plug, they created an automation: a button press temporarily disables AdGuard's filtering for 15 minutes, followed by a one-hour cooldown. The article details the setup, including AdGuard Home API configuration and Home Assistant automation, offering a practical solution for managing internet usage and combating addiction.

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Development internet control

A Static Website for Professional Communication

2025-02-13
A Static Website for Professional Communication

A new static website project, "How to Professionally Say," offers alternative phrasing for common workplace communications to promote professionalism and avoid misinterpretations. Data is sourced from Instagram content creator @loewhaley. The project is in early stages, with the author seeking community feedback to refine its content and make it more broadly applicable. The project is open-source, welcoming contributions and suggestions.

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In Defense of Productivity Systems: It's About Doing the Work, But Systems Help

2025-01-17
In Defense of Productivity Systems: It's About Doing the Work, But Systems Help

This article explores the pros and cons of productivity tools. The author argues that while a minimalist 'heads-down' approach works for some, a personalized system is key for most to truly boost efficiency. Using personal experience, the author highlights the importance of building and using a system that suits individual needs, emphasizing the diversity of styles across different systems and the value of mutual inspiration. Ultimately, the author concludes that regardless of system complexity, the key lies in finding what works and taking action.

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Misc efficiency

Lightweight Sum Types and Switches for Lua: lua-match

2024-12-31
Lightweight Sum Types and Switches for Lua: lua-match

lua-match is a minimalistic Lua library providing sum types and switch functionality. It leverages a tagging function for a clean and efficient way to handle various data types and conditional branching. With a simple tagging function and a switch table, you can easily implement sum type-like behavior and pattern matching, simplifying your Lua code significantly. The library is open-source and uses the MIT license.

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Development Sum Types

Building a Better Future with 'Plausible Fiction'

2025-01-24

This article proposes a novel approach called 'plausible fiction' to tackle real-world problems by constructing believable narratives that bridge the gap between our present and a desired future. The author argues that collective participation in filling the gaps within these narratives can transform fiction into reality. This process resembles a form of collective prediction and creation, potentially leveraging mathematical tools like applied category theory. The article uses a hypothetical platform, FutureForge, to illustrate how gamification and incentive mechanisms can encourage broader participation, ultimately leading to a better future.

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Backblaze's SSD vs. HDD Reliability Showdown: The Verdict is...

2025-02-19
Backblaze's SSD vs. HDD Reliability Showdown: The Verdict is...

Backblaze conducted a long-term reliability study comparing SSDs and HDDs in their data centers. Initial data suggested significantly lower failure rates for SSDs, but this was skewed by the much shorter operational lifespan of SSDs and varying drive-day counts. Retrospectively analyzing HDD data to match SSD age and usage revealed comparable failure rates between the two. Long-term data shows HDD failure rates increase dramatically with age, while the future trend for SSDs remains unclear. Currently, using failure rate as the sole deciding factor when choosing between SSDs and HDDs is questionable; cost, speed, and other factors should weigh heavier in your decision.

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Hardware Reliability

FastAnime: Your Terminal-Based Anime Experience

2025-01-28
FastAnime: Your Terminal-Based Anime Experience

FastAnime is a command-line tool that lets you browse and watch anime directly from your terminal. It integrates with AniList for powerful searching and downloading capabilities, and offers extensive customization options. Users can browse anime, download videos, manage cache, and more, all through a well-designed CLI. It supports MPV player, provides desktop notifications, and offers convenient keybindings. FastAnime is easy to install with support for various package managers and operating systems, boasting a rich set of command-line options and customization features for a streamlined and powerful anime-watching experience.

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Development anime
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