Published: 2025-02-14 | Origin: /r/programming

The project described is called "emjay," a simple programming language implemented in Rust, featuring a Just-In-Time (JIT) compiler without a traditional interpreter. Emjay functions as a basic calculator, intentionally designed to be limited for easier end-to-end implementation. The code, which includes tests, is approximately 4,000 lines long and is available on GitHub. The project utilizes the pest parser library for parsing while other components of the compiler were hand-coded, leading to the generation of basic machine

Published: 2025-02-14 | Origin: Hacker News

Mathematicians have recently demonstrated that any sofa larger than a specific size will become stuck when moving through a hallway corner, which presents a complex geometric problem known as the "moving sofa problem." This issue, first framed by Leo Moser in 1966, involves determining the maximum area of a two-dimensional shape that can navigate through an L-shaped hallway of unit width without getting stuck at the corner. While smaller shapes like a square or semicircle can easily maneuver through, larger, more complex shapes

Published: 2025-02-14 | Origin: /r/programming

BetterHTMLChunking is a Python library designed for intelligent HTML segmentation that constructs a DOM tree from raw HTML to extract content-rich areas effectively. It is particularly useful for content analysis and large language model (LLM) processing. The library generates structured, size-limited segments from HTML documents while maintaining semantic coherence and respecting size constraints. Unlike plain-text or token-based chunking strategies which focus on token limits, BetterHTMLChunking preserves the HTML DOM structure, optimizing chunk boundaries based on the length of text

Published: 2025-02-14 | Origin: /r/ruby

The task is to implement a Questionnaire feature in an app, utilizing a JSON column for flexible data storage. Initially, the Active Record store method is used to add accessors and ensure the data is tracked. However, after deployment, issues arise when the data team reports invalid JSON in the questionnaire table. Upon investigation, it's discovered Rails defaults to YAML for data serialization, leading to improperly formatted data in the database. To resolve this, the coder option is added to the store method, but it still

Published: 2025-02-14 | Origin: /r/programming

In Zig, you cannot perform a switch statement on strings (i.e., slices of bytes), which leads to an error message indicating that switching on strings is not allowed. There are two main reasons for this limitation: the ambiguity surrounding string identity (whether equal strings need to point to the same address, and how null-terminated vs. non-null-terminated strings are treated), and the expectations of users for certain optimizations that are not feasible with strings. Instead, string comparison in Zig is typically done

Published: 2025-02-14 | Origin: /r/programming

Subscribing to LWN provides support for ongoing publishing and grants subscribers immediate access to all site content and additional features. Jake Hillion recently presented at FOSDEM on using the BPF scheduling framework, specifically sched_ext from kernel version 6.12, to identify difficult concurrency issues. He, alongside Johannes Bechberger, developed a scheduler that effectively exposes theoretically possible concurrency bugs in Linux applications, though the project is still in early stages. Bechberger, an OpenJDK developer,

Published: 2025-02-14 | Origin: Hacker News

The author shares their experience working on a legacy project, emphasizing the challenges and frustrations often associated with such work. Despite their dislike for legacy projects, they gained insights into modern practices and were part of a team that generally follows best practices. While there were some inefficiencies, such as trivial pull requests and issues with the operations team, the overall team performance was good. However, their team was directed to assist another project that used an outdated version of Java and older coding standards, which added to their reluct

Published: 2025-02-14 | Origin: /r/programming

The content discusses OpenOrch, a language-agnostic microservices platform for building AI applications, originally developed as a local alternative to ChatGPT. Due to its authors' expertise in microservices, OpenOrch evolved into a comprehensive backend solution that integrates various functionalities such as orchestration, reverse proxy, ORM, AI support, and user management. This unified platform simplifies the development process by providing essential tools, reducing complexity, and allowing developers to focus on building applications. OpenOrch is easily operated

Published: 2025-02-14 | Origin: /r/programming

GitHub Copilot has evolved from a basic suggestion tool to an active collaborator in software development, particularly with the introduction of Agent Mode. This mode functions as an autonomous co-coder, allowing developers to assign tasks like creating a web application for marathon training without manual coding. It can set up project structures, create components, and fix errors, streamlining the development process. Additionally, GitHub Copilot has launched Next Edit Suggestions (NES), which enhances coding efficiency by predicting and suggesting modifications to existing code

Published: 2025-02-14 | Origin: Hacker News

OCR4all is a free and open-source Optical Character Recognition (OCR) tool that provides high-quality processing for both challenging manuscripts and mass full-text recognition of printed materials. It includes a setup guide, user guide, and developer documentation, with no subscription fees or paywalled features. Users can manually annotate and correct text using the LAREX editor, and future versions will remain compatible with the OCR-D ecosystem. OCR4all allows users to create complex OCR workflows via a user interface without technical coding

Published: 2025-02-14 | Origin: Hacker News

The project involves a virtual petri dish where digital creatures evolve eyes over millions of simulated years, beginning with a simple light-detecting cell. These creatures face various challenges that mirror those encountered in nature, such as finding food, avoiding toxins, and evading predators. As a result, they develop different types of eyes—like compound eyes for navigation and camera-like eyes for distinguishing food from poison—demonstrating the emergence of solutions similar to those found in natural evolution, including the development of lenses

Published: 2025-02-13 | Origin: Hacker News

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Published: 2025-02-13 | Origin: Hacker News

On February 13, 2025, Kagi Search announced the introduction of a new privacy feature called Privacy Pass, which is an authentication protocol intended to enhance user privacy. Privacy Pass enables clients (users) to authenticate with servers (like Kagi) without the server being able to identify individual users, thus protecting user privacy while granting access to services. This aligns with Kagi's commitment as a privacy-focused search engine, which does not track users or sell their data. The implementation of Privacy Pass

Published: 2025-02-13 | Origin: Hacker News

Bots and spam pose significant challenges for online platforms, and while traditional CAPTCHAs help combat these issues, they often require proprietary software enhancements and may compromise user privacy. To address this, the authors introduce "MapTCHA," a CAPTCHA system that utilizes the uncertainties in computer vision imagery interpretation to verify human involvement in mapping efforts. Users identify images of correctly recognized objects, such as building outlines, from various cases: known positives (objects found in both AI predictions and OpenStreetMap), unknown cases (objects

Published: 2025-02-13 | Origin: /r/programming

The Interop Project is a collaborative initiative among browser vendors and platform implementors aimed at enhancing the interoperability of the web platform for users and developers. Each year, the project identifies key focus areas for improvement, encouraging browser engines to prioritize common features for quicker usability. Progress is tracked through an Interop dashboard that measures the pass rate of web-platform tests in these areas. In 2024, the Interop score has significantly improved, reaching 95% in major browsers, up from 46% at

Published: 2025-02-13 | Origin: Hacker News

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Published: 2025-02-13 | Origin: /r/programming

The article discusses adding graphical support to a Chip-8 emulator, building on previously established instruction implementation capabilities. Initially, the emulator executed instructions sequentially, but now the focus is on incorporating control flow, allowing conditional execution and loops. Two essential control flow instructions are highlighted: the jump instruction (0x1NNN), which alters the program counter (PC) to redirect execution to a specified address (NNN), and a conditional skip instruction that checks if a register (X) equals a value (

Published: 2025-02-13 | Origin: /r/programming

In August 1963, W.A. Blankinship published a paper on a fast algorithm for computing the Greatest Common Divisor (GCD) for multiple numbers, titled "A New Version of the Euclidean Algorithm." This article aims to code Blankinship's algorithm in C and explores its application in solving Diophantine equations. The discussion will be structured into four parts: an introduction to Diophantine equations, an overview of the GCD, the relationship between the GCD

Published: 2025-02-13 | Origin: Hacker News

In Anno 1800, the sun's position is tied to the camera, causing shadows to consistently fall in one direction as the camera rotates. This creates a time-lapse effect, differing from the fixed sun position option, which mimics real-world lighting but can lead to unflattering camera angles where shadows fall behind objects, resulting in a flat appearance. The author appreciates the flexibility of the camera-relative sun for its significant visual impact, noting how shadows influence the game's aesthetic. They also commend

Published: 2025-02-13 | Origin: Hacker News

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