Published: 2025-11-26 | Origin: Hacker News

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Published: 2025-11-26 | Origin: /r/programming

The content invites participants to join the Coder Cafe leaderboard for Advent of Code (with a specific leaderboard code) and mentions potential prizes for winners. It references a past blog post for newcomers and informs about a Discord channel for discussions. The main discussion focuses on a recent comment by Linus Torvalds criticizing a late pull request for introducing a "helper function," `make_u32_from_two_u16()`. Torvalds argues that it makes the code less comprehensible compared to writing the operation explicitly

Published: 2025-11-26 | Origin: Hacker News

The content discusses the valuable feedback users provide and emphasizes the importance of their input. It introduces Gemini CLI, an open-source AI assistant that integrates Google's Gemini model into the command line, serving as a conversational tool for coding tasks, debugging, content generation, and system automation. The guide offers around 30 pro tips for effectively using Gemini CLI, which operates like an enhanced pair programmer. To install Gemini CLI, users can leverage npm for a global installation or use npx to run it without installation. It

Published: 2025-11-26 | Origin: /r/programming

The content discusses the challenges of testing functions in applications where business logic is tightly coupled with various operations like database access and HTTP requests. This coupling complicates unit testing, as it requires setting up test databases or using mocks, leading to more time spent on configuring tests rather than writing code. The article advocates for a different approach to handling side effects in code. Instead of executing operations immediately, developers should first describe the work to be done. This approach is likened to writing a recipe instead of cooking

Published: 2025-11-26 | Origin: /r/ruby

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Published: 2025-11-26 | Origin: /r/programming

Ilya Sutskever and Yann LeCun, two key figures in AI, suggest that large language models (LLMs) are nearing their limits. Sutskever, co-founder of OpenAI, believes the industry is shifting from "scaling" to "research," emphasizing the need for new ideas rather than just increased model size and data. He describes the evolution of AI over the past decade in three phases: initial experimentation, a phase dominated by scaling laws leading to significant breakthroughs (

Published: 2025-11-26 | Origin: /r/programming

The author recounts an experience where a quant researcher spent an entire weekend—forty hours—running a backtest that involved parsing millions of NASDAQ ITCH messages with a Python script. The parsing process, which took microseconds per message, accumulated to significant downtime. The researcher was not engaged in complex data transformations; rather, they were simply reading and passing data, highlighting a significant speed issue in parsing. This inspired the creation of a new parser that could handle NASDAQ ITCH data more efficiently

Published: 2025-11-26 | Origin: /r/ruby

In the second part of a series on developing a Flappy Bird clone using the DragonRuby toolkit, Julian Rubisch discusses implementing game mechanics and interfacing with an HTTP server for publishing on itch.io. The focus is on adding a game-over condition when the player’s plane collides with obstacles or falls off the screen. The game code is organized to include a `game_over?` method that checks the plane's position relative to the screen's lower boundary. When the game ends, it switches to

Published: 2025-11-26 | Origin: Hacker News

NASA's Voyager 1, launched in 1977, is nearing a historic milestone as it will be 16.1 billion miles (25.9 billion km) from Earth by November 15, 2026, resulting in a radio signal taking 24 hours to reach it. As the most distant human-made object, Voyager 1 entered interstellar space in 2012 and travels at about 11 miles per second. It continues to send data thanks to its long-lasting power sources.

Published: 2025-11-26 | Origin: /r/programming

As AI coding tools evolve, the industry is exploring how to leverage their strengths while addressing their limitations. Spec-Driven Development (SDD) is proposed as a method where polished specifications become the primary guide for AI agents to produce reliable software. However, after attempting to use SDD with Spec Kit on a hobby app feature, the experience was frustrating, marked by excessive documentation, prolonged agent run-times, and various challenges. The author reflects on the complexities of instructing AI agents, particularly whether to provide

Published: 2025-11-26 | Origin: /r/programming

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Published: 2025-11-26 | Origin: /r/ruby

Vishnu M. discusses a problem encountered after upgrading NeetoCal from Rails 7.1.5.2 to 7.2.1.1, which led to production crashes due to a "SystemStackError: stack level too deep." The issue arose within the `Slots::SyncAllCalendarsService`, a service for syncing multiple calendars with the Async gem. The error seemed to originate from a peculiar deep stack trace related to visiting SQL "OR" nodes, which raised questions

Published: 2025-11-26 | Origin: /r/ruby

The content appears to be a binary file or data stream, rather than coherent textual information. It contains a series of non-readable characters, numbers, and symbols, which suggests it is not intended for direct comprehension as written text. If this is part of an encoded or compressed file, it may require the appropriate decoding software to interpret its meaning or extract useful data.

Published: 2025-11-26 | Origin: /r/ruby

On November 26, 2025, Hiroshi Shibata announced the release of RubyGems 4.0.0.beta2 and Bundler 4.0.0.beta2, both of which include various deprecations, enhancements, and bug fixes. Users can update RubyGems and Bundler using specific commands. A section on how to install RubyGems manually is available on the Download RubyGems page. RubyGems.org serves as the Ruby community’s gem

Published: 2025-11-26 | Origin: /r/ruby

**Summary:** The content discusses a Black Friday sale offering 20% off on a product using the code TWENTYOFF2025, valid until December 31, 2025. It also outlines the development journey of Broadcast, a self-hosted email marketing platform released in 2024. Key challenges included ensuring ease of installation and maintenance for users unfamiliar with Ruby on Rails. Instead of distributing source code, Broadcast is delivered as a Docker image, with a setup that includes a Rails app

Published: 2025-11-26 | Origin: /r/programming

Anthropic has unveiled its latest AI model, Claude Opus 4.5, which it describes as the most powerful and cost-effective version to date, claiming it can outperform human engineers while reducing costs by 67%. This model is now available across Claude’s web and mobile apps, APIs, and major cloud platforms like AWS, Google Cloud, and Microsoft Azure. One of the key highlights is its performance on the SWE-bench Verified test, where it achieved an accuracy of 80.9%,

Published: 2025-11-26 | Origin: /r/programming

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Published: 2025-11-26 | Origin: Hacker News

Ridley Scott, in a 1979 interview, discussed his influences for the Nostromo and its claustrophobic design in "Alien," citing "2001: A Space Odyssey" and John Carpenter's "Dark Star." While "2001" presents a clean, clinical view of space, "Dark Star" offers a more comedic and gritty perspective, showcasing a rundown spaceship to illustrate a sense of reality in space living. Scott valued the idea of a "used universe," as expressed by Dan O

Published: 2025-11-26 | Origin: /r/ruby

Jon Sully discusses the development of a new "Utilization"-based autoscaling option, elaborating on the challenges faced in tracking process utilization for web servers. Following two previous articles outlining use-cases and high-level concepts, this post dives into the practical difficulties encountered while attempting to measure utilization metrics directly in a real application. The approach involved creating a background thread that periodically checks if a process is handling requests, but issues arose with this method. Key challenges included aliasing, where rapid bursts of traffic

Published: 2025-11-26 | Origin: Hacker News

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