Published: 2025-12-15 | Origin: /r/programming

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Published: 2025-12-15 | Origin: /r/programming

The author discusses their experience with the Go programming language, specifically regarding tracking unique values using maps. Initially, they used `map[int]bool` but later considered switching to `map[int]struct{}` due to its zero-sized type, which theoretically saves memory. Despite this change, they observed no decrease in memory consumption in production. They researched the implications of this change and found that since Go 1.24, a new map implementation called Swiss Tables has been introduced, which reportedly uses less memory

Published: 2025-12-15 | Origin: /r/programming

The author recently learned about atomic commits after reviewing a pull request, admitting it took them too long to discover the concept. They explain that atomic commits involve making single, cohesive changes in code that can independently pass continuous integration (CI) tests, ensuring that each commit leaves the codebase in a working state. This approach helps others easily understand commit histories without needing to analyze multiple commits together. The author compares the process to saving progress in a video game at logical checkpoints. They mention that their current development

Published: 2025-12-15 | Origin: /r/programming

The article discusses the integration of gRPC services into Spring Boot applications using the newly released Spring gRPC project (1.0 GA). gRPC is an open-source Remote Procedure Call framework that relies on Google’s Protocol Buffers for data serialization. Prior to this release, Spring projects lacked native gRPC support, often requiring third-party solutions that are now outdated. The article also draws comparisons with Quarkus, offers access to the author's sample GitHub repository containing related applications, and outlines steps for generating

Published: 2025-12-15 | Origin: /r/ruby

TreeHaver is a cross-Ruby adapter for the Tree-sitter parsing library, compatible with MRI Ruby, JRuby, and TruffleRuby. It offers a unified API for parsing source code with Tree-sitter grammars, allowing developers to write their code once and run it across different Ruby implementations, similar to how Faraday operates for HTTP. TreeHaver simplifies the integration of Tree-sitter into Ruby applications by automatically selecting the relevant backend, making it easier to manage parsing across various environments.

Published: 2025-12-15 | Origin: /r/programming

Jubilant is a Python API developed for Juju, a deployment and operations tool by Canonical. The article discusses key design decisions in Jubilant, such as employing Python’s subprocess.run for invoking Juju commands, generating Python dataclasses from Go structs, and using Make and uv for build automation. The author usually refrains from discussing work-related topics but chose to share insights since Jubilant is open source, and the name was inspired by colleague Dave Wilding. The article contrasts Jubilant

Published: 2025-12-15 | Origin: /r/programming

In Part 1, a badge system was created to track progress and award achievements, but it had a significant design flaw: each feature required manual updates to badges, leading to scattered badge logic and reliance on human memory. This resulted in several problems, as the current approach required features to notify the badge system about events like quiz completions or user logins. The proposal is to shift to an event-driven system. In this new approach, the feature code only emits events without needing to manage badge logic

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

The author discovered Fuzix, a lightweight operating system derived from UNIX tailored for the Z081 Zilog microcontroller, while exploring hobby operating systems. With a Raspberry Pi Pico on hand, they decided to try Fuzix. The recommended host operating system for compiling Fuzix is Debian Bookworm, which they didn’t have, so they created a Dockerfile to set up the necessary build environment. They checked out the version v0.4 of Fuzix and removed a game from the

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

Working quickly has multiple benefits beyond just completing tasks more efficiently. When you work faster, the perceived cost of starting new tasks decreases, making you more likely to take on additional projects. Conversely, slow work can lead to a lack of motivation, as tasks seem too daunting and contribute to a cycle of procrastination. This is true for any to-do list—when items accumulate without being crossed off, it can discourage further additions. This principle also applies to communication, such as email responses; quick replies lead

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

Of course! Please provide the content you'd like me to summarize.

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

The author reflects on their experience with learning French, highlighting the disconnect between classroom knowledge and real-life usage. They recall a trip to a cafe in Chartres where, despite successfully ordering coffee in French, they became flustered when faced with the total price, leading them to revert to using their phone instead of attempting to engage further in the language. The author emphasizes that language apps often fail to prepare learners for real-time conversation, particularly under pressure. Years later, while preparing for a move to Québec

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

The content discusses the Arborium project, which enhances Tree-sitter highlighting by providing curated grammars and updated highlight queries, facilitating better code parsing and highlighting for multiple platforms including native (macOS, Linux, Windows) and WebAssembly (WASM). Arborium includes a sysroot that simplifies the use of WASM with C code, addressing the challenge of compiling Rust with C's standard library dependencies. The project offers compact HTML markup for highlighted code, omitting JavaScript requirements, and supports ANSI true

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

John Varley, the renowned science fiction writer, passed away on December 10, 2025. He first gained prominence in the mid-1970s with his "Eight Worlds" stories, set in a dark future where powerful aliens have wiped out humanity on Earth. Despite the bleak setting, his stories were vibrant and imaginative, showcasing ideas like gender fluidity, the ephemeral nature of wealth, and the ability to bank memories for a fresh start after death. Varley was prolific, often publishing

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