Published: 2024-12-26 | Origin: /r/programming

Continuation-Passing Style (CPS) is an intermediate representation used in compilers for functional programming languages like SML and Scheme. CPS is based on two main rules: function arguments must always be trivial, and function calls do not return. This post introduces CPS by implementing a basic CPS transformation for a small Scheme-like language, highlighting the language's features such as integers, operations, variable bindings, single-parameter functions, and control flow through branching. The implementation of a recursive function, referred to as

Published: 2024-12-26 | Origin: Hacker News

Axiom Space has adjusted its assembly sequence in collaboration with NASA to enhance its operations as a free-flying space station and minimize reliance on the International Space Station (ISS) during the assembly process. In January 2020, NASA awarded Axiom a contract to develop at least one commercial habitable module to be attached to the ISS, with the intention of creating a standalone destination in low Earth orbit before the ISS's planned retirement in 2030. Initially, Axiom intended to attach its first module

Published: 2024-12-26 | Origin: Hacker News

The book, distributed at the 2024 FIDO Authenticate conference, discusses the inadequacies of passwords as a method of authentication. It highlights common user behaviors such as reusing weak passwords and the vulnerabilities that arise when password databases are compromised, which can lead to account breaches across multiple sites. The author notes the prevalence of phishing attacks and other security issues, such as inadvertent logging of passwords by companies and JavaScript injection vulnerabilities. To address these problems, the book proposes the use of public key signature

Published: 2024-12-26 | Origin: /r/programming

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Published: 2024-12-26 | Origin: /r/programming

The author discusses their experience with a Dropbox engineering blog about Robinhood, a load balancing service that dynamically adjusts node weights using Proportional Integral Derivative (PID) controllers. Although they had a vague understanding of control theory, they took the opportunity during Christmas to implement a simple version of a PID controller in Python to better grasp its functionality. A PID controller is a feedback mechanism used to manage processes requiring continuous control and automatic adjustments. It calculates the difference between desired and actual outputs—referred to as

Published: 2024-12-26 | Origin: /r/ruby

Ruby 3.4 introduces significant enhancements to its documentation, alongside new language features. These updates, visible on docs.ruby-lang.org and in RDoc, aim to improve the user experience for both existing Ruby developers and newcomers. Some key changes include: - A dedicated index page for quicker access to commonly used classes like Array and String. - An improved Standard Library page for easier navigation to related documentation and GitHub repositories. - Over 50 dead links have been fixed due to new RDoc features

Published: 2024-12-26 | Origin: /r/programming

The content emphasizes the importance of user feedback and provides a curated list of significant papers relevant to Software Engineering for students and professionals. It includes classic works by notable figures, covering topics such as computer history, artificial intelligence, information theory, software design, programming paradigms, concurrency, operating systems, databases, networking, cryptography, distributed systems, human-computer interaction, and more. Each paper is noted for its impact on the respective areas of software engineering. For more information on qualifiers, the documentation is

Published: 2024-12-26 | Origin: /r/programming

Stefan Judis discusses common failures in end-to-end testing, highlighting two main issues: test flakiness and long test execution times. Test flakiness leads to unreliable results and delayed deployments, as teams often waste time on tests that only pass intermittently. Long execution times, especially exceeding 30 minutes, can hinder timely production releases. To address these problems, Judis suggests making Playwright tests faster primarily by parallelizing tests, which involves running multiple tests simultaneously to reduce overall execution time

Published: 2024-12-26 | Origin: Hacker News

Toby Rush and his friends at Kansas State University were profoundly influenced by advice from elder mentors about the importance of relationships over material possessions. They were encouraged to invest deeply in their connections, leading them to become lifelong neighbors in the Kansas City metro area, sharing responsibilities and supporting one another. However, maintaining friendships can be challenging due to life changes like relocating for jobs or personal reasons. This struggle to sustain connections is more pronounced today, contributing to a larger societal issue known as the “loneliness epidemic,”

Published: 2024-12-26 | Origin: /r/programming

Bashform allows users to create and share forms using SSH without requiring any additional installations. To participate, users need an SSH key and can interact with the forms via specific commands. These include filling out forms, creating new forms with a defined number of questions, and listing forms and their responses. The process is straightforward, and contributions for improvement are encouraged. For more details, users can refer to the documentation.

Published: 2024-12-26 | Origin: Hacker News

The content humorously discusses poor typography and font mistakes, particularly highlighting extreme kerning issues referred to as "keming." It serves as a playful warning about the importance of proper font spacing. The message concludes with a festive greeting for Christmas.

Published: 2024-12-26 | Origin: Hacker News

The latest publication includes a variety of articles related to banknotes, such as the Alves Reis case, the Oxford Old Bank, the Romanian Athenaeum's depiction on banknotes, economic crises related to currency, government counterfeiting, and unusual foreign motifs on banknotes. The nominees for the 2024 Banknote of the Year include notable notes from China, Thailand, Japan, Mozambique, Argentina, the Eastern Caribbean States, and Morocco. Additionally, the International Bank Note Society (IB

Published: 2024-12-26 | Origin: Hacker News

Black Candy is a self-hosted music streaming server that allows users to create their personal music center. It can be easily installed using a Docker image. A demo is available at https://demo.blackcandy.org, where users can log in with demo credentials (email: [email protected], password: foobar) to explore its features, although the demo user lacks administrative privileges and features a limited music selection from the Free Music Archive. For installation, users can access the server via http://localhost

Published: 2024-12-26 | Origin: Hacker News

Bird flu is on the rise in Washington state, significantly impacting the Wild Felid Advocacy Center in Shelton, where 20 big cats—over half of the sanctuary's population—have died in recent weeks. The first death occurred around Thanksgiving, and the deceased include five African Servals, four bobcats, four cougars, two Canada Lynxes, and an Amur-Bengal tiger mix. The sanctuary is currently under quarantine and closed to the public to prevent further spread, and it is collaborating

Published: 2024-12-26 | Origin: Hacker News

SiYuan is a privacy-focused, self-hosted personal knowledge management software that is fully open-source and developed in TypeScript and Go. It supports fine-grained block-level references and offers a Markdown WYSIWYG editor. Most features are free for all users, including commercial use, but some functionalities require payment. Users are encouraged to install SiYuan through application markets for easier updates. For server deployment, using Docker is recommended, with specific instructions on setting up permissions using PUID and PG

Published: 2024-12-26 | Origin: /r/programming

F* (pronounced F star) is a versatile proof-oriented programming language that supports both functional and effectful programming. It integrates dependent types with proof automation techniques, such as SMT solving and interactive theorem proving. By default, F* programs compile to OCaml, but they can also be extracted to F#, C, WebAssembly, or assembly using various tools. F* is open source, developed by Microsoft Research, Inria, and the community, and is available under the Apache 2.

Published: 2024-12-26 | Origin: Hacker News

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Published: 2024-12-26 | Origin: Hacker News

The content discusses a common misconception about POSIX time (Unix time), which is often described as the number of seconds since the Unix epoch (January 1, 1970). However, it clarifies that this is not entirely accurate. For instance, as of December 25, 2024, the reported POSIX time is 1735152686 seconds, which is 29 seconds less than the actual seconds that have elapsed since the epoch. This discrepancy arises because POSIX time is

Published: 2024-12-25 | Origin: Hacker News

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Published: 2024-12-25 | Origin: Hacker News

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