Published: 2024-11-22 | Origin: Hacker News

The content discusses the various file types associated with low-level software, particularly focusing on linker scripts, which are critical for organizing code in firmware, kernels, and drivers. Linker scripts (.ld files) allow precise control over the output of the toolchain, but few people know how to write them. The author hopes to impart knowledge on crafting these scripts, referencing the GNU ld and lld documentation for detailed syntax. The post aims to provide a friendly introduction to linker scripts without requiring prior knowledge of tool

Published: 2024-11-22 | Origin: Hacker News

Amazon S3 Express One Zone now allows users to append data directly to existing objects, enabling applications that continuously receive data, such as log-processing and media-broadcasting applications, to add new entries or video segments without needing to combine data beforehand. This feature supports immediate reading of the updated objects within S3. It is available in all AWS Regions where this storage class exists, and users can utilize the AWS SDK, AWS CLI, or Mountpoint for Amazon S3 (version 1.12.

Published: 2024-11-22 | Origin: Hacker News

The content discusses the "pingcap/autoflow," an open-source Graph RAG (Knowledge Graph) tool developed using TiDB Serverless Vector Storage, LlamaIndex, and DSPy. It allows users to enhance their search experience through a conversational interface and an advanced web crawler that scrapes official sites for comprehensive information. Users can edit the Knowledge Graph to ensure accuracy and currency of the data provided. Additionally, the tool features an embeddable JavaScript snippet for easy integration into websites, allowing

Published: 2024-11-21 | Origin: Hacker News

The content provides a CSS snippet for styling author sections with specific rules for avatar size and display properties, followed by a summary of a meeting regarding the WebGPU specification held on November 21, 2024. Major tech companies like Google, Mozilla, Apple, Intel, and Microsoft are collaborating on the development of WebGPU, with a focus on progressing toward Milestone 0 and addressing key issues for W3C candidate recommendation status. The participants noted no significant obstacles to this advancement and emphasized prioritizing

Published: 2024-11-21 | Origin: Hacker News

ESET researchers have discovered new Linux backdoor malware connected to the China-aligned Gelsemium group, known for its cyberespionage activities since 2014. The backdoor named WolfsBane is attributed with high confidence to Gelsemium, paralleling the group's known Windows malware, Gelsevirine. Another backdoor, FireWood, was also identified, but its direct link to Gelsemium is uncertain, causing a low-confidence attribution. The backdoors are designed for persistent access

Published: 2024-11-21 | Origin: Hacker News

The content discusses the evaluation of user feedback and the provision of extensive documentation regarding available qualifiers. It highlights a project focused on LLM (Large Language Model) interpretability using Sparse Autoencoders (SAEs) with the Llama 3.2 model, implemented in pure PyTorch. The project aims to enhance understanding of LLMs by extracting interpretable features from neuron activations, which are complicated by superposition—in which multiple features share the same neurons. The project seeks to "untangle

Published: 2024-11-21 | Origin: /r/programming

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Published: 2024-11-21 | Origin: /r/programming

PHP 8.4 is set to be released on November 21, 2024, featuring several significant enhancements, including property hooks, HTML 5 support, and the ability to chain methods on new invocations without requiring additional parentheses. Property hooks will greatly reduce boilerplate code by allowing properties to define their own get and set hooks, which can be defined optionally. This means that properties could exist with only a get hook, making them virtual properties. Additionally, property hooks can be defined in

Published: 2024-11-21 | Origin: /r/programming

The text discusses the feedback received on JQ, a tool for JSON manipulation, and highlights a key issue: its error messages can be difficult to understand. JQ fails to track the flow of input data, leading to localized error messages that do not specify the source of the problem. An example is provided where a faulty JQ program attempts to access non-existent fields in a JSON object, resulting in an unclear error. In contrast, a tool called tjq provides improved error messaging by building a "

Published: 2024-11-21 | Origin: /r/programming

HTTP cookies are small data pieces set by JavaScript or HTTP servers, which are crucial for maintaining state in the stateless nature of the web. Once created, web browsers send these cookies with every relevant HTTP request until they expire. The author discusses a specific JavaScript code that stored JSON directly into a session cookie, which was unusual but accepted by browsers. However, this caused issues with the Go standard library, which couldn't parse the cookie properly, leading to failures in the application's functionality. The historical context

Published: 2024-11-21 | Origin: /r/programming

The author reflects on nearly 15 years of experience in scientific calculations, initially performed by hand during their undergraduate studies before transitioning to computer-assisted methods for more complex measurements and analysis in graduate school. They highlight the challenges of ensuring accuracy in numerical computations, which often involve checking equations and units meticulously to avoid errors that could lead to resource waste. Emphasizing the importance of leveraging technology, the author introduces the concept of "typed dimensions" as a solution to reducing calculation errors and discusses the utility of the dimensional

Published: 2024-11-21 | Origin: /r/programming

The new DOM API introduces standards-compliant parsing for HTML5 documents, fixes various compliance bugs, and adds convenient functions for document manipulation. This API is accessible via the Dom namespace, with document generation supported by Dom\HTMLDocument and Dom\XMLDocument classes. Additionally, the new BcMath\Number object allows for object-oriented use of arbitrary precision numbers, supporting standard mathematical operations. These number objects are immutable and compatible with string contexts. PHP 8.4 source downloads are available on the downloads

Published: 2024-11-21 | Origin: /r/ruby

The article discusses how to integrate the `jemalloc` memory allocator with a Ruby on Rails application to enhance performance and memory management. It outlines the steps to install `jemalloc`, configure Rails to use it, and provides guidance on monitoring its impact on the application's memory usage. The piece emphasizes the benefits of improved memory efficiency and reduced fragmentation, ultimately leading to better overall application performance.

Published: 2024-11-21 | Origin: /r/ruby

Upgrading a Ruby on Rails (RoR) application is essential for maintaining competitiveness, security, and utilizing the latest features. However, poorly managed upgrades can lead to significant losses, often exceeding $100,000 due to downtime, reduced functionality, data breaches, or increased development hours. This article outlines ten common mistakes made during RoR upgrades and provides strategies to avoid them. One major issue is underestimating the effort required for the upgrade, as companies often view it as a straightforward process. Up

Published: 2024-11-21 | Origin: /r/programming

Sidecars are a design pattern in which an auxiliary container operates alongside a primary container, enhancing the capabilities of individual deployments for specific tasks. This article discusses the advantages and limitations of sidecars, their appropriate use cases, and guidance on determining their suitability. In orchestration platforms like Kubernetes, a pod typically contains one primary container alongside one or more sidecar containers. The primary container handles the main functionality while sidecar containers deliver additional services such as service discovery, logging, and security, without requiring alterations

Published: 2024-11-21 | Origin: /r/ruby

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Published: 2024-11-21 | Origin: Hacker News

The project titled "Infinite-Horizon World Generation with Real-Time Interaction" presents a pioneering approach to creating a fully immersive digital universe, reminiscent of the vision depicted in the film *The Matrix* (1999). Developed by a collaborative team from Alibaba Group, the University of Hong Kong, the University of Waterloo, and the Vector Institute, this system excels in generating infinitely long, high-quality videos with real-time interactive controls. Key features include: - A foundation model capable of producing AAA game-quality visuals that

Published: 2024-11-21 | Origin: Hacker News

David Bessis, drawn to mathematics by its mysterious nature, pursued a doctoral degree at Paris Diderot University and specialized in geometric group theory before shifting to the tech sector by founding a machine learning startup in 2010. Throughout his journey, he sought to explore and explain the thought processes of mathematicians, leading to the publication of his book “Mathematica: A Secret World of Intuition and Curiosity” in 2022. The book, recently translated into English, posits

Published: 2024-11-21 | Origin: Hacker News

The Monty Home Device Hacking Guide repository provides detailed instructions for enhancing the functionality of the Monty Home BLE device using a Raspberry Pi. Initially developed for compost monitoring, the device collects data such as temperature and humidity. This guide is aimed at those interested in BLE devices, IoT applications, or environmental monitoring. The repository includes three projects that utilize Python and Raspberry Pi to interact with the Monty Home device, each with distinct objectives: 1. **LED Control:** Use temperature data to light an

Published: 2024-11-21 | Origin: Hacker News

This post provides a guide on using DataFusion to create a custom developer experience for databases. It acknowledges the complexity of databases, which are often seen as black boxes by most developers, and encourages exploration in building them. The landscape of databases has evolved, particularly with innovations in big data technologies and the trend of developing tools in Rust. The article explains that modern databases can be divided into compute and storage layers, with query engines handling the computation. It discusses the architecture of query engines, including stages such