Published: 2025-01-30 | Origin: Hacker News

Many home and office printers embed invisible yellow dots, known as machine identification codes, into printed documents. These dots vary by brand and can contain information like the printer's serial number and print time, serving as a "signature" for forensic analysis by law enforcement. To see these dots, one needs a magnifying glass or a high-resolution image with adjusted color channels. Notably, not all printers leave these dots; industrial offset printers used for magazines and posters do not include them. Different brands have unique

Published: 2025-01-30 | Origin: /r/programming

The content serves as a comprehensive web technology reference for developers, covering various aspects of web development, including the structure of web content, document styling with CSS, and general scripting with JavaScript. It emphasizes the importance of making web projects universally accessible and offers resources for learning, such as HTML and CSS guides. Key highlights include: - Introduction to web technologies and tools for developers. - A focus on learning resources for structuring and styling web content. - A mention of MDN Plus for enhanced support and

Published: 2025-01-30 | Origin: /r/programming

The author reflects on the importance of taking time to think before making decisions, particularly in high-pressure situations. They share a personal experience during a client call where they hastily provided a deadline estimate, which led to regret. Since then, they have implemented a rule of not giving estimates on the spot and instead promise to follow up after taking time to consider. This approach helps them detach from emotions, identify blind spots, and gain perspective. The author cites Daniel Kahneman's similar practice of postponing

Published: 2025-01-30 | Origin: /r/programming

The content describes a file named "signature.asc," which contains a digitally signed message part.

Published: 2025-01-30 | Origin: /r/programming

The latest major version of Codon has been released, marking its first significant update in 2025. Notably, Codon is now fully open source under the Apache License, allowing free commercial use. Exaloop will still provide enterprise licenses with support services for organizations that need them. A key new feature is a complete Codon-native implementation of NumPy, built from the ground up to leverage Codon’s multithreading and GPU capabilities. This addresses previous limitations, as many users found Num

Published: 2025-01-30 | Origin: /r/programming

The author reflects on their experience landing a "full-stack" developer role, initially feeling excited about the multifaceted nature of the job. However, six months in, they found themselves overwhelmed and overburdened, highlighting that the term "full-stack" often means being expected to handle multiple positions for a single salary. They criticize job postings that demand extensive knowledge across numerous technologies, implying that this trend exploits developers rather than celebrates their skills. The piece emphasizes the challenging realities of the profession, contrasting initial

Published: 2025-01-30 | Origin: Hacker News

In the early 1980s, printed circuit boards (PCBs) in 8-bit home computers were designed differently compared to the early 2010s, where significant advancements in miniaturization and design occurred, notably the introduction of copper pours. Copper pours are computer-generated zones that fill the spaces between traces on a PCB, improving signal integrity and reducing RF emissions, which became increasingly important due to FCC regulations on unintentional radiators imposed in the 1980s. These changes were

Published: 2025-01-30 | Origin: Hacker News

A passenger jet from Wichita, Kansas, collided midair with a U.S. Army Black Hawk helicopter near Ronald Reagan Washington National Airport in northern Virginia on Wednesday night. Flights at the airport are currently halted as search and rescue teams operate in the Potomac River, where at least 18 bodies have been recovered. The plane involved is identified as a PSA Airlines Bombardier CRJ700, with 60 passengers and four crew members on board. There were also three soldiers on the helicopter. A webcam

Published: 2025-01-30 | Origin: /r/programming

The content discusses the longstanding presence and evolution of SQL, likening it to a person who has improved over time despite an initially unappealing reputation. Despite numerous attempts to replace it, SQL remains a core aspect of databases. The Carnegie Mellon University Database Research Group is hosting a seminar series called "SQL or Death?" to explore methods to either enhance SQL's performance or find better alternatives. The online talks are open to the public through Zoom, and recordings will be made available on the CMU-DB

Published: 2025-01-30 | Origin: Hacker News

Mathesar is an open-source web application designed to simplify the process of working with PostgreSQL databases. It features an intuitive spreadsheet-like interface that enables users of all technical skill levels to view, edit, query, and collaborate on data without coding. The application is self-hosted, ensuring that data remains secure on local servers and utilizes native PostgreSQL access control for security. As a project maintained by the Mathesar Foundation, a nonprofit, it supports scalable and complex data workflows while requiring minimal setup.

Published: 2025-01-30 | Origin: Hacker News

The content emphasizes the importance of user feedback and directs readers to documentation for additional qualifiers. It introduces the Blueskyfeedbot, which posts RSS feeds to Bluesky using GitHub Actions. Users are instructed to create an app password, set up a new GitHub repository with a secret containing an access token, and add a specific workflow file. It also notes that the status template employs Handlebars for templating. Importantly, it clarifies that the service is not certified by GitHub and is

Published: 2025-01-29 | Origin: Hacker News

The author shares insights with a friend who wants to start a blog, emphasizing the importance of authenticity and individuality in writing. They suggest that what makes a person unique can be more interesting than trying to conform to standard writing styles. Embracing contradictions—such as a love for classical architecture alongside a punk aesthetic—can enrich one's style. Writing should be reflective of personal interests and emotions, and a more conversational, chat-like writing style can fuel livelier content. The author advises that while it’s crucial

Published: 2025-01-29 | Origin: /r/ruby

The JRuby community has released JRuby 9.4.11.0, which is compatible with Ruby 3.1. This update addresses two critical bugs found in the previous version, JRuby 9.4.10.0, and users are advised to skip that version when upgrading. The community expresses gratitude to the contributors for their support in advancing JRuby.

Published: 2025-01-29 | Origin: /r/ruby

On January 27, 2025, a keynote speaker shared insights from their talk at the EuRuKo conference in September 2024, expressing their deep connection to the topic. With 25 years of software development experience, primarily in Ruby, the speaker contributes to the Ruby community and leads the Ruby Changes project. They also serve as a principal engineer at Hubstaff while actively serving in the Ukrainian Armed Forces, emphasizing their duty to protect their homeland amidst a backdrop of conflict. The talk included reflections

Published: 2025-01-29 | Origin: /r/programming

TypeScript 5.8 Beta has been released, and it introduces improved handling of the return types in functions like `showQuickPick`. The function in question allows users to select single or multiple options based on a `selectionKind` parameter. Previously, TypeScript's type signature for `showQuickPick` returned a broad type of `string | string[]`, which required callers to perform explicit checks. The beta version enhances this by using conditional types to make the return type more precise. However,

Published: 2025-01-29 | Origin: Hacker News

The content emphasizes the importance of user feedback and provides an overview of a minimal PyTorch implementation for training a small language model (LLM) from scratch, designed for educational purposes. Key features include efficient training, flash attention, and modern sampling techniques. The implementation is based on the TinyStories dataset, with a validation loss of 1.0491. Users are encouraged to modify key parameters in the config.py file and are invited to contribute through issues or pull requests. It notes that while the setup

Published: 2025-01-29 | Origin: Hacker News

The ARC Prize Foundation extends gratitude to Tuhin, Abu, and Yuchen for hosting the r1-zero model variant, which is rare and vital for research. The foundation aims to encourage innovation towards Artificial General Intelligence (AGI) but acknowledges that we have not yet achieved AGI and that the prevailing focus on scaling large language models (LLMs) is limiting progress. In 2023-24, investments in LLM startups reached around $20 billion, while AGI startups received only about $

Published: 2025-01-29 | Origin: /r/programming

The content discusses the challenge of safely accessing and modifying a complex variable protected by a mutex while performing operations outside of the lock. The conventional approach can lead to issues, such as unnecessary object construction and exception handling complexities. An alternative method using an immediately-invoked lambda is proposed, which allows for the retrieval of the variable's value under the lock without constructing a temporary object, thanks to Return Value Optimization (RVO). This approach can be used to move values out of locked objects or exchange values while

Published: 2025-01-29 | Origin: /r/programming

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Published: 2025-01-29 | Origin: /r/programming

The text discusses the importance and limitations of trust in both personal relationships and software. Trust is essential for society, allowing people to rely on one another, but it also has boundaries. For instance, while one may feel justified in leaving their home unsecured, it's wise to recognize that not everyone will respect that trust, necessitating precautions like locking doors. Similarly, in the realm of software, we place trust in various applications and their interdependencies. However, as software increasingly relies on many direct and transitive