Published: 2025-03-16 | Origin: /r/ruby

In 2025, Stan Lo shares essential debugging tips for Ruby developers. He recommends using the launch request in `launch.json` rather than attaching manually to streamline the debugging process. For Rails projects, he suggests including `gem "debug", require: "debug/prelude"` in the Gemfile to avoid unnecessary activation of debug.gem unless debugging is needed. Developers can also control the use of debug.gem in certain environments by setting `RUBY_DEBUG_ENABLE` to 0, which is

Published: 2025-03-16 | Origin: Hacker News

The article discusses the flaws of the on-call system in large tech companies compared to smaller firms, which often manage this better. Drawing on personal experience from military service, where being on guard was a necessary but disliked responsibility, the author likens that to the on-call duties in his IT career. He points out that in startups, on-call responsibilities are often part of regular work hours and focused on customer service rather than merely troubleshooting system failures. However, in larger tech companies, despite having more resources,

Published: 2025-03-16 | Origin: /r/ruby

The author shares their experience with the ruby_llm gem after seeing a post about it on Hackernews that highlighted Ruby's syntax. They noted a potential security vulnerability when a user pointed out that the gem's Readme examples utilized `eval`, which could allow for code execution if user input is passed. The author attempted to demonstrate this vulnerability by creating examples, but initially found that the gem filtered out their attempts. Ultimately, they succeeded in executing a system command through a more complex prompt. They emphasize two

Published: 2025-03-16 | Origin: /r/ruby

The content you provided appears to be a raw binary data snippet, likely from a compressed image file in PNG format (given the headers such as IHDR and IDAT). The data does not convey any coherent text or information but instead encapsulates binary values that represent graphical information, colors, and possibly metadata for rendering an image. This type of data is typically not human-readable and is meant for processing by software capable of interpreting the PNG format.

Published: 2025-03-16 | Origin: Hacker News

The VisuAlgo project, funded by Optiver from mid-2023 to mid-2025 and possibly longer, aims to enhance mobile-friendliness and online quiz capabilities. The platform is trilingual, with English, Chinese, and Indonesian versions, striving for near 100% translation rates. It offers users the ability to input their own data for algorithms, particularly in nine graph-related visualizations. New features include dual visualization scales and improved link handling in linked list operations. Starting June 9

Published: 2025-03-16 | Origin: Hacker News

The content introduces "Docs," an open-source collaborative note-taking, wiki, and documentation platform built with Django and React, positioned as an alternative to Notion or Outline. It emphasizes the importance of user feedback and provides resources for documentation and getting started. Users can test the platform in their browser by logging in but are cautioned that local installations are for testing only. To run Docs locally, users need Docker and Docker Compose, with specific commands suggested for setting up the project, installing dependencies, running database

Published: 2025-03-16 | Origin: Hacker News

"Artificial Intelligence: Foundations of Computational Agents, 3rd edition" by David L. Poole and Alan K. Mackworth is a comprehensive textbook that explores the design of intelligent computational agents within the field of artificial intelligence (AI). Aimed at both undergraduate and graduate students, the book presents an accessible overview of AI as a serious scientific and engineering discipline. It emphasizes a coherent vision of the field, presenting it as an integrated science through a multi-dimensional design space that has been explored to varying ext

Published: 2025-03-16 | Origin: Hacker News

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Published: 2025-03-16 | Origin: Hacker News

The OLMo 2 32B model claims to be the first fully open AI model, with all data, code, and weights publicly available, that outperforms GPT-3.5 Turbo and GPT-4o mini. A user shared a successful method to install and run it on a Mac using the llm-mlx plugin, which downloads 17GB of files. Users can start an interactive chat or run prompts with the model, and modifying the output token limit allows for longer

Published: 2025-03-16 | Origin: /r/programming

Eventure is a robust event-driven framework designed for simulations, games, and complex systems. It features comprehensive capabilities for event sourcing, querying, and analysis. Key characteristics include: - **Event-Driven Architecture**: Implements a publish-subscribe model, facilitating event dissemination. - **Event Sourcing**: Treats events as the primary source of truth, allowing for clear implementation and practical benefits. - **Tick-Based System**: Enhances deterministic execution, discrete time steps, performance optimization, and flexible

Published: 2025-03-16 | Origin: /r/programming

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Published: 2025-03-16 | Origin: /r/programming

Semgrep has announced $100 million in Series D funding, led by Menlo Ventures. The company focuses on enhancing code security through various tools, including static application security testing (SAST), software composition analysis (SCA), and semantic analysis for hardcoded secrets. Semgrep provides AI-driven triage and code fix recommendations, and aims to automate and enforce security across organizations while minimizing false positives. The platform enables users to write and share custom rules, stay updated on developments, and mitigate software supply chain

Published: 2025-03-16 | Origin: Hacker News

The content introduces "rust-stakeholder," a CLI tool designed to generate impressive but meaningless terminal output, allowing users to appear productive and knowledgeable without actually coding. It highlights the benefits of looking busy, suggesting that visual complexity in the terminal can impress stakeholders, even leading to promotions and reduced queries about deadlines. User testimonials emphasize the tool's effectiveness in creating an illusion of expertise and importance in the workplace, while humorously noting the lack of actual test coverage and the theoretical nature of its functionalities. The overall

Published: 2025-03-16 | Origin: /r/programming

Late at night, the author's phone alerts them to a high error rate in their system, which had been functioning well until then. Upon investigating, they discovered a single bug had caused a significant service failure, leading to a flood of user complaints. After lengthy debugging, they resolved the issue and restored service. This incident highlighted a critical lack of observability in their system. Many engineers believe they have adequate monitoring, but when issues arise, they often struggle to diagnose problems effectively. The author argues that software

Published: 2025-03-16 | Origin: Hacker News

The author shares a personal journey of rescuing a piece of obscure Apple software history from an old 160 MB Conner hard drive that had malfunctioned. The story begins with an intriguing blog post by Pierre Dandumont, which discussed a hidden feature in the Macintosh Performa 550. This feature involves a secret partition on the hard drive containing a miniature, invisible System Folder designed to assist users in case of system failures. When issues arise, users are prompted to either fix the problem themselves or reinstall

Published: 2025-03-15 | Origin: Hacker News

The tj-actions repository, a widely used tool in GitHub Actions, was recently compromised, prompting a notable response from the infrastructure and security teams at Carta. This incident underscored the limitations of LLMs in fully replacing essential software roles. Additionally, Jennifer Palkha's "Recoding America" emphasizes that decision-makers can act irrationally longer than professionals can remain employed, resonating with recent discussions about the challenging job market in 2025. Many individuals who entered senior roles between 201

Published: 2025-03-15 | Origin: Hacker News

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Published: 2025-03-15 | Origin: /r/programming

TracePerf is a tool designed for advanced console logging and performance tracking in Node.js applications. It allows users to visualize execution flows using ASCII art, identify bottlenecks, and receive optimization suggestions. The tool includes features like structured logs, conditional modes, and memory tracking to enhance debugging efficiency. Additionally, TracePerf offers a browser-compatible version for frontend applications. Feedback from users is valued and taken seriously, with available documentation for further details. The tool is released under the MIT license.

Published: 2025-03-15 | Origin: Hacker News

The study published in *Scientific Reports* explores the potential use of human DNA found in air and dust as evidence in criminal investigations, particularly in situations where visible traces are absent, such as in a vacated drug factory. Samples were taken from various indoor settings with differing occupancy and cleaning practices, and DNA profiles were analyzed against those of 55 known individuals. Results indicated that indoor dust is a rich source of DNA, providing a historical record of past occupants. Notably, DNA was also detected in ultra

Published: 2025-03-15 | Origin: /r/ruby

The content discusses the use of Postgres as a versatile database management system, particularly in web applications where it handles multiple users simultaneously. It highlights the challenges of maintaining data consistency while serving concurrent clients and introduces a rudimentary booking platform for event reservations written primarily in SQL, with minimal Ruby code. The article promises to explore transaction-related issues and the isolation property of transactions, starting with the creation of a bookings table that includes customer identification and reserved seats. It emphasizes the importance of atomicity, ensuring that multiple