Published: 2025-06-29 | Origin: /r/programming

The passage discusses the purpose and significance of tests in software development. It emphasizes that tests serve as a means of communication—not just with the computer, but primarily with other programmers, future developers, and oneself. Tests capture the intent behind the software, documenting the problems it aims to solve and the expected behavior under various circumstances. Writing tests helps clarify and organize thoughts about the system's functionality, ensuring that developers understand what they want the software to achieve. The author stresses the importance of clearly describing the required behavior

Published: 2025-06-29 | Origin: /r/programming

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Published: 2025-06-29 | Origin: /r/programming

The article by Hong Minhee discusses the challenge of effectively passing context or "invisible" parameters (such as loggers or HTTP request contexts) through software programs without excessive verbosity. It reviews historical and contemporary methods for addressing this issue, including: 1. **Dynamic Scoping**: Originating in 1960s Lisp, dynamic scoping determines a variable's value based on the call site rather than definition. While simple and powerful, its unpredictability led to its decline in popularity, despite its

Published: 2025-06-29 | Origin: /r/ruby

El texto discute el concepto de Value Objects (VO) en programación, explicando su inmutabilidad y comparación por valor, utilizando ejemplos en C# y Ruby. En C#, se usa la palabra clave `record` para crear un VO inmutable, mientras que en Ruby, aunque se pueden crear clases que imiten este comportamiento, la mutabilidad puede ser un problema debido a la flexibilidad del lenguaje. Se presenta un enfoque para hacer más seguro un VO en Ruby utilizando el método `freeze

Published: 2025-06-29 | Origin: Hacker News

New research from Caltech and UC Berkeley has revealed how zebrafish can regrow and repair their hearts after damage, providing insights that could inform future human heart repair strategies. The study, published in the Proceedings of the National Academy of Sciences, was conducted by Marianne Bronner and Megan Martik, focusing on neural crest cells, which contribute to various cell types in the heart. The researchers discovered that heart cells derived from these neural crest cells play a key role in orchestrating the heart's repair process

Published: 2025-06-28 | Origin: /r/programming

The content discusses a programming trend where people are solving online games, specifically highlighting the UK-based "Passport Application" game created by His Majesty's Passport Office (HMPO). This text-based adventure puzzle game, which can be quite expensive at around £100, is humorously described as a cultural phenomenon among British citizens who play it roughly every decade. The game's objective is to collect various documents to prove British citizenship, adhering to complex bureaucratic rules documented in acts of parliament. Players enjoy a challenge that can

Published: 2025-06-28 | Origin: Hacker News

Rollie Pemberton, known as Cadence Weapon, began his rapping career as a teenager in Edmonton, where the local hip-hop scene was minimal. He developed his skills online by recording verses on his mother's desktop computer, garnering attention for his talent in the music blogosphere. In 2003, while attending university, he began writing album reviews for Pitchfork, which helped him gain recognition. He caught the interest of Toronto's Upper Class Recordings, which offered him a 360

Published: 2025-06-28 | Origin: Hacker News

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Published: 2025-06-28 | Origin: /r/programming

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Published: 2025-06-28 | Origin: /r/programming

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Published: 2025-06-28 | Origin: Hacker News

The content outlines the upcoming ARRL Field Day, which is set for June 28-29, 2025. This event is an annual open house for amateur radio, where over 31,000 participants in North America set up temporary stations to showcase ham radio's contributions to science, community service, and emergency preparedness. It has been celebrated since 1933 and remains a prominent event in the ham radio community. Participants aim to make as many contacts as possible across various HF bands, including

Published: 2025-06-28 | Origin: Hacker News

On June 18, 2025, the Trademark Trial and Appeal Board (TTAB) dismissed a fraud claim against Oracle that accused the company of misleading the USPTO by using a screenshot of the Node.js website to support its "JavaScript" trademark renewal in 2019. The author, associated with Node.js, finds this particularly offensive, as Node.js is not an Oracle product, and believes Oracle's use of the screenshot indicates a lack of credible evidence. Despite the dismissal, the core

Published: 2025-06-28 | Origin: Hacker News

Ubicloud is an open-source alternative to AWS that provides managed cloud services based on technologies like PostgreSQL, Kubernetes, and vLLM. vLLM is an open-source inference engine for large language models, allowing the deployment of multiple instances across GPUs and managing them through load balancing, health checks, and upgrades. Customers access the service by sending prompts to API endpoints, which determine the serving vLLM instance. The blog post explains the flow of an inference request through vLLM's OpenAI

Published: 2025-06-28 | Origin: /r/programming

DevInsight is a platform focused on technology and development, offering expert insights and tutorials to help users stay updated with the latest trends in IT. Currently, it features a Day 14 entry in the Node.js Interview Q&A series, which discusses backend tooling, performance, and best practices for scaling Node.js applications. It emphasizes the use of middleware like multer for handling multipart/form-data and suggests implementing size limits and MIME type checks for security. The platform also boasts a community of developers, writers, and learners

Published: 2025-06-28 | Origin: /r/ruby

The content discusses common pitfalls in optimizing Rails applications, emphasizing that many developers waste time on optimizing code that has little impact on overall performance. It highlights that most performance issues often stem from just a small portion of the codebase, following the Pareto Principle (80/20 rule), where around 80% of problems arise from 20% of the code. The text advises against making assumptions and encourages developers to use Application Performance Monitoring (APM) tools like New Relic or Scout to identify genuine

Published: 2025-06-28 | Origin: Hacker News

The author reflects on feeling increasingly overwhelmed by global issues but finds solace in breakthroughs in their research field, particularly in Busy Beaver theory. They recount significant advancements in understanding the sixth Busy Beaver number (BB(6)). Initially, it was established by Pavel Kropitz that BB(6) exceeds 1510, and later, through the efforts of the BBchallenge team, new bounds were reached: first to BB(6) > 10,000,00010, and then to even greater levels

Published: 2025-06-28 | Origin: /r/programming

Using OpenEvolve, an open-source version of Google DeepMind's AlphaEvolve, we have made significant advances in the automated discovery of highly efficient GPU kernels that outperform those created by experts. This project focused on optimizing Metal kernels for transformer attention on Apple Silicon and showcased the potential of automated code optimization in practical applications. In an ambitious test, we applied OpenEvolve to enhance the Grouped Query Attention (GQA) implementation of the Qwen3-0.6B model, aiming to

Published: 2025-06-28 | Origin: Hacker News

The article discusses the cycle of social media platforms that attempt to address the negative aspects of existing ones, such as BeReal promising authenticity and Clubhouse aiming for intimacy. The author shares their experience building a platform, Circliq, designed to encourage real-life connections rather than algorithm-driven engagement. Despite good intentions, the project failed due to the inherent challenges of scaling within a flawed economic framework that prioritizes growth and profit over genuine social interaction. The author realizes that every effort to "fix" social media

Published: 2025-06-28 | Origin: /r/programming

The content discusses the Helix editor, highlighting its advantages and critiquing traditional 'search and replace' popup windows in modern editors as poor design. Helix is a modal terminal editor that emphasizes multiple cursors and selection-based editing, making it effective for processing loosely structured data like logs and JSON files. The author demonstrates Helix's simplicity in extracting data from a large JSON file efficiently, contrasting it with the complexities of configuring other editors like Vim and VSCode. The author appreciates Helix's out

Published: 2025-06-28 | Origin: Hacker News

The article discusses the unexpected versatility of USB-C technology and MCP (Model Context Protocol). Initially perceived as a simple means for charging and data transfer, USB-C has proven capable of connecting diverse devices creatively, as illustrated by the anecdote of a friend using a toaster with an HDMI output. The author compares this to car cigarette lighters, which serve as universal power outlets for various devices. The discussion shifts to MCP, originally intended to enhance AI capabilities. However, the author posits that if MCP can