Published: 2025-06-23 | Origin: Hacker News

The NSF–DOE Vera C. Rubin Observatory has released its first images, unveiling a rich, colorful view of the Universe, particularly focusing on the southern region of the Virgo Cluster, 55 million light-years away. This image captures a stunning array of cosmic objects, including various stars and galaxies, showcasing the vast potential for scientific discovery. Over the next 10 years, during the Legacy Survey of Space and Time, researchers worldwide will have access to this extensive data to investigate fundamental questions about the Milky

Published: 2025-06-23 | Origin: Hacker News

Leaked renders of the upcoming Fairphone 6 showcase the company's focus on repairability and sustainable design. Set to launch on June 25 for €549, the device will be available in black, white, and green, featuring a design that includes flat edges and a unique camera system. Notably, it allows easy access to the battery and other components through removable screws, emphasizing its sustainable ethos. The Fairphone 6 will feature a 6.31-inch OLED display with a 120Hz

Published: 2025-06-23 | Origin: Hacker News

The blog post discusses the author's frustrations with lagging in VSCode, particularly when using the Vim plugin, and issues with keybinding conflicts. After trying Zed, which also faced similar problems, the author opted for Neovim (nvim) in the terminal but was annoyed by the need to copy and paste file paths frequently. To effectively manage file navigation, especially with features analogous to VSCode's ctrl-click, the author developed a solution using tmux for enhanced terminal capabilities. The post highlights

Published: 2025-06-23 | Origin: /r/programming

The document outlines a C library designed to integrate Apple Intelligence on-device Foundation models into applications across various programming languages, including C, C++, Python, Rust, and Go. This library, known as libai, allows developers to leverage Apple's AI capabilities without requiring internet connectivity, as all operations are processed locally on the user's device. It is compatible with multiple platforms, such as Intel Macs, Apple Silicon devices, iPhones, iPads, and Apple Vision Pro. Notable features include session management for isolated

Published: 2025-06-23 | Origin: Hacker News

Greer Jarrett, an archaeologist at Lund University, has identified four potential Viking havens along the Norwegian coast after sailing over 5,000 kilometers along Viking trade routes in replica boats. This research is part of a broader field known as experimental archaeology, which seeks to understand ancient technologies through practical experimentation. Jarrett's findings suggest that these havens were situated farther out to sea than previously known major ports, indicating a decentralized network significant for trade and travel during the Viking era. Other researchers in

Published: 2025-06-23 | Origin: Hacker News

In a blog post by Sam Estep dated June 23, 2025, the author discusses the importance of locality in programming to enhance performance. The focus is on how memory operations interact with different cache levels (L1, L2, L3) and how programs should be structured to optimize this interaction. Using an example of summing floating-point numbers based on indices from a second array, the author examines the performance differences between accessing the array in a sequential (first-to-last) order versus

Published: 2025-06-23 | Origin: Hacker News

The author explores the vibrant and unique small business culture in Japan, specifically highlighting tiny bars, izakayas, and specialized shops located in residential areas. They describe visiting quaint coffee shops in Kyoto, where coffee culture is more leisurely rather than grab-and-go. One particular spot caught their attention—a small coffee shop that doubles as a bar in the evening, located in a driveway between homes. The author appreciates the craft of coffee-making and notes the ease of starting small businesses in Japan, expressing plans to write

Published: 2025-06-23 | Origin: /r/ruby

To make a Ruby class comparable (e.g., allowing expressions like `a > b`), you need to implement the spaceship operator `<=>` and include the Comparable module. For simple classes, like a six-faced Die, you can compare based on a single attribute such as the Die's value. However, for more complex cases, like a Die with varying numbers of faces, you want to prioritize higher values and more faces. A common method to implement the spaceship operator is using `Array#<

Published: 2025-06-23 | Origin: /r/programming

Undo/redo systems in creative software are essential yet often overlooked until they malfunction. Designing an effective system for Alkemion Studio, a visual brainstorming and writing tool for tabletop role-playing games (TTRPGs), presented numerous challenges but proved rewarding. The complexity stems from the multiple contexts users navigate, such as moving tokens, editing text, and adjusting metadata, which require a context-aware system to prevent confusion and potential bugs. Additionally, each undoable action serves as a structured autosave, emphasizing the

Published: 2025-06-23 | Origin: /r/programming

The article explores the history of Java, detailing its development by Sun Microsystems and key figures like James Gosling, Mike Sheridan, and Patrick Naughton. The aim was to create a universal programming language that could operate across various devices, but differing hardware architectures posed a challenge. To address this, they developed Java to compile code into an intermediate format called bytecode, which runs on the Java Virtual Machine (JVM), allowing for platform independence. The article also hints at interesting connections with oak trees,

Published: 2025-06-23 | Origin: /r/programming

The content discusses the importance of caching in system design for enhancing performance and scalability. However, it highlights the complexities surrounding cache invalidation, which can lead to serving outdated data if not managed properly, resulting in bugs and user experience issues. The author introduces the upcoming article's focus on cache invalidation fundamentals, including necessary strategies like write-through, write-behind, and time-to-live (TTL) approaches, especially in modern distributed systems. Additionally, the post mentions various resources and courses for those preparing for

Published: 2025-06-23 | Origin: Hacker News

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Published: 2025-06-23 | Origin: /r/programming

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Published: 2025-06-23 | Origin: Hacker News

The content discusses the polystate library, which facilitates the creation of Composable Finite State Machines (FSMs). It emphasizes the importance of user feedback and encourages communication for any clarifications. The library aims to enhance programming through composability and type safety, making FSMs more effective. It provides instructions for downloading and adding polystate as a dependency in projects, along with examples to illustrate its usage. The author acknowledges the effort in explaining the library clearly and offers support for any questions. A basic example

Published: 2025-06-23 | Origin: Hacker News

arXivLabs is a platform that enables collaborators to create and share new features for the arXiv website, adhering to values of openness, community, excellence, and user data privacy. Only partners who uphold these principles are included. If you have a project idea that could benefit the arXiv community, you are encouraged to learn more about arXivLabs. Additionally, users can receive notifications about arXiv's operational status via email or Slack.

Published: 2025-06-23 | Origin: /r/programming

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Published: 2025-06-22 | Origin: Hacker News

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Published: 2025-06-22 | Origin: /r/programming

This week's newsletter, sponsored by Cerbos, focuses on securing non-human identities (NHIs) in the context of AI agents and microservices. An accompanying ebook outlines a roadmap based on Zero Trust principles, detailing real-world NHI security threats, governance principles, and a vendor evaluation checklist to enhance NHI security. The newsletter also discusses a recent article analyzing the state of engineering leadership, highlighting a troubling trend where 51% of engineering leaders now perceive AI negatively, an increase from 42%

Published: 2025-06-22 | Origin: Hacker News

The author recently submitted their PhD thesis and explored using Typst, a modern typesetting language, instead of LaTeX. They describe Typst as a blend of markdown and Rust, offering a comfortable writing experience without cumbersome syntax. One of the main advantages of Typst is its fast compile times, essential for maintaining focus while writing—compared to their friend's LaTeX setup, which took 90 seconds to compile. Typst allows for near-instant previews during document changes, making the

Published: 2025-06-22 | Origin: /r/programming

The article discusses lesser-known features of POSIX shells, highlighting the importance of writing portable shell scripts rather than relying on Bash-specific features. The author shares useful tricks for common tasks, such as removing prefixes and suffixes from filenames, which are applicable in any POSIX shell. They emphasize that these methods do not involve external commands like `basename` or `dirname`, making them faster and more efficient, especially on platforms like Windows where forking is costly. The author encourages the use of these POSIX