Published: 2025-12-15 | Origin: Hacker News

CapROS is a new operating system that combines traditional concepts of capabilities with modern performance and resource management techniques. It is designed to be a small, secure, real-time OS featuring orthogonal persistence. CapROS is a continuation of the EROS project, with significant contributions from Jonathan Shapiro and others involved in that initiative. The CapROS project is hosted on GitHub, which is acknowledged for its support of open source software.

Published: 2025-12-14 | Origin: Hacker News

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Published: 2025-12-14 | Origin: Hacker News

In his keynote speech "The Problem of Teaching Physics in Latin America," delivered at the First Inter‑American Conference on Physics Education in 1963, Richard Feynman addresses the challenges of teaching physics, not only in Latin America but globally. He emphasizes that the difficulties in teaching physics are part of a broader educational issue that lacks effective solutions. While many new teaching approaches are proposed, their effectiveness is often untested, whereas traditional methods have been critiqued over time for their faults. Feyn

Published: 2025-12-14 | Origin: Hacker News

The TNS organization welcomes subscribers, promising to deliver top news content Monday through Friday, and encourages following on social media platforms like LinkedIn. In the open-source hardware community, there's a debate over Arduino's new Terms and Conditions following its acquisition by Qualcomm. Adafruit, a key competitor, argues the terms threaten open principles by limiting reverse engineering and asserting extensive monitoring for AI features. However, Arduino defends the changes, stating that they apply only to its Software-as-a-Service cloud applications while maintaining its

Published: 2025-12-14 | Origin: Hacker News

The content discusses a Progressive Web App (PWA) created for the author's wife and daughter, allowing them to order hot chocolate and coffee from home, with the author acting as the barista. It serves as a convenient solution for specific beverage requests and social gatherings. The app, built with Nuxt 3 and Appwrite, features Web Push notifications for order updates. Feedback highlights that the ordering buttons are in French despite the rest of the app being in English, and suggests implementing multi-select and nullable

Published: 2025-12-14 | Origin: Hacker News

The content outlines the usage and support for the Mathlib library, a user-maintained library for the Lean 4 theorem prover that includes programming tools and mathematical resources. Key points include the importance of user feedback, installation guides, and links to documentation. Users can access community discussions via Zulip and find help with their projects. Installation steps include obtaining precompiled files and building the library with specific commands. The content also encourages engagement with the community for support and collaboration.

Published: 2025-12-14 | Origin: Hacker News

Migratory birds and sea turtles are among various life forms capable of navigating using the Earth's magnetic field, a phenomenon known as magnetoreception. This ability has evolved in numerous species for evolutionary advantage. Examples include: - **Magnetotactic bacteria** with magnetite chains functioning as compasses. - **Land plants** that exhibit growth and germination altered by weak magnetic fields. - **Honey bees** possessing magnetite in their abdomens aiding navigation. - **American cockroaches** showing

Published: 2025-12-14 | Origin: Hacker News

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Published: 2025-12-14 | Origin: /r/programming

The author shared a small Python program called Mark V. Shaney Junior, which is a minimal implementation of a Markov text generator inspired by the original Mark V. Shaney from the 1980s. The program consists of about 30 lines of code, focusing on simplicity rather than efficiency. The author engages in exploratory programming as a hobby, often creating tiny programs for recreation and experimentation, particularly with Markov chains. Occasionally, they refine one of these programs and share it on GitHub and

Published: 2025-12-14 | Origin: /r/programming

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Published: 2025-12-14 | Origin: /r/programming

The content discusses the concepts of memory safety and sandboxing, highlighting that they are distinct yet complementary. Memory safety ensures that a program does not access memory in an unsafe manner, while sandboxing restricts a program's capabilities to prevent it from performing dangerous operations. It provides examples illustrating that a program can be memory safe but not sandboxed (as in a pure Java program that can overwrite files) and sandboxed but not memory safe (like an assembly program that can only compute but has memory safety

Published: 2025-12-13 | Origin: Hacker News

In a 2017 piece, the author discussed a technique for creating closures in C using JIT-compiled wrappers, although he noted that it’s rarely needed in practical applications. He initially applied this technique to the `qsort` function, which lacks a context pointer. Recently, he revisited the concept, contemplating improvements, particularly in enhancing Win32 window procedure callbacks by adding a fifth argument for additional context. While using w64devkit on x64, the author intends for the method to

Published: 2025-12-13 | Origin: /r/programming

On Thanksgiving morning, the author discovered that their web service was down, receiving a "503 Service unavailable" error and a cryptic "Runtime version: Error" message. Rather than spend time troubleshooting or contacting support, they noticed a warning about migrating their app from Linux Consumption to Flex Consumption due to the former's impending end of life in September 2028. Having been aware of this issue for weeks while setting up a new app, the realization of a critical error prompted the author to take action and

Published: 2025-12-13 | Origin: Hacker News

The author expresses their enthusiasm for exploring the "lost lists" of Anthony Bourdain, inspired by Greg TeChnoLogY's recent work. They aim to recover these lists using publicly available web archives due to their background in security and crawling, despite lacking access to proprietary storage. The author references their development of a script, `commoncrawl_search.py`, which fetches data from the Common Crawl to search for Bourdain's lists. They highlight collaboration with Claude and outline a method for retrieving

Published: 2025-12-13 | Origin: Hacker News

A recent analysis by IPinfo examined 20 popular VPNs, revealing that 17 of them route traffic from different countries than they advertise. Many providers exaggerate the number of countries they support, often pointing to a limited number of data centers in the US or Europe. The analysis, which looked at over 150,000 exit IPs across 137 countries, compared the claimed capabilities of each VPN with actual data, highlighting significant discrepancies. The report includes a detailed examination of the countries claimed by each

Published: 2025-12-13 | Origin: Hacker News

It appears that the content provided is a raw excerpt from a PDF file. This excerpt features binary encoding, which includes non-text characters that cannot be easily summarized in a coherent way. In general, PDF files can contain various types of content, including text, images, and graphical elements. However, since the text here is not human-readable and is likely binary data from the PDF structure itself, I cannot provide a summary of any specific ideas or information contained within it. If you have specific sections of

Published: 2025-12-13 | Origin: /r/programming

Twilio has showcased its latest innovations, integrations, builder tools, and support plans, reaffirming its status as a leader in the 2025 Gartner® Magic Quadrant™ for CPaaS, where it was recognized for its strong ability to execute. The 2025 State of Customer Engagement Report highlights five key trends shaping brand-customer connections in the coming year. Additionally, the document discusses the advantages and challenges of microservices architecture, which Twilio Segment initially implemented as a best practice. While

Published: 2025-12-13 | Origin: Hacker News

The author shares their experience with Advent of Code, a coding challenge they participate in annually for seven years, successfully earning all possible stars. They appreciate the time pressure, community aspect, and the opportunity to dive deep into a chosen programming language each December, selecting Gleam this year. This year's event was condensed to 12 days with 24 parts, making it feel more challenging than expected. The easier puzzles were more engaging than prior years, while the harder ones, particularly the last three, presented

Published: 2025-12-13 | Origin: /r/programming

The article discusses the engineering behind quantitative finance, specifically focusing on the technology and systems used by exchanges to manage order processing effectively. In a landscape where thousands of orders arrive every millisecond from various global participants, such as high-frequency trading firms and pension funds, it is crucial that all parties have a consistent view of the order sequence. This is achieved through the use of distributed logs for order books, which ensures fairness and a deterministic timeline of events. The process is complex due to the unpredictable nature of order

Published: 2025-12-13 | Origin: /r/programming

The article discusses the challenges faced while building simob, an open-source server monitoring agent designed for the Simple Observability platform. The initial goal was to create a single, portable Go binary that could run on any Linux distribution without the need for external dependencies. Simob is envisioned as a lightweight passive sensor rather than a long-running daemon, aiming for ease of compilation and deployment across different systems. Go is chosen for its strengths in observability tools due to its compilation capabilities, garbage collection, and efficient management