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My reflection on Ruby/Rails upgrade in a project Published: 2025-06-30 | Origin: /r/ruby Failed to fetch content - HTTP Error - Failed to open TCP connection to :80 (Connection refused - connect(2) for nil port 80) |
After nine years, Ninja has merged support for the GNU Make jobserver Published: 2025-06-30 | Origin: /r/programming After a request made on April 27, 2016, for support of the GNU Make jobserver, Ninja—a build system similar to GNU Make—has finally integrated this feature following several attempts and forks. Ninja is designed to manage file creation efficiently by executing tasks in parallel while avoiding unnecessary file recreation. However, a challenge arises when a Ninja process spawns a child Ninja process, potentially doubling the number of concurrent processes and overwhelming system resources, especially on multi-threaded CPUs. Traditional solutions, like |
Bought an Ampere Altra System Published: 2025-06-30 | Origin: Hacker News The author, an ARM developer, details their experience in creating a custom development machine based around an Ampere Altra processor. After moving away from using an Apple MacBook Pro due to its limitations (not supporting 64k page size), they opted for an Ampere Altra system to meet their work requirements. The key components for the system included an AsrockRack ALTRA8BUD-1L2T motherboard, a used Q80-30 processor with 80 cores, and eight |
Gridfinity: The modular, open-source grid storage system Published: 2025-06-30 | Origin: Hacker News Gridfinity is a modular storage system designed for workshops, aimed at enhancing productivity, organization, and safety. It is open source, mostly 3D printable, and inspired by Alexander Chappels' Assortment System and Zack Freedman's initial designs. First introduced in a video titled "Gridfinity: Your Ultimate Modular Workshop is FREE!" under the MIT license, Gridfinity has evolved through a collaborative community that adapts it to meet various needs. Users are encouraged to join and customize the system. |
NativeJIT: A C++ expression –> x64 JIT Published: 2025-06-30 | Origin: Hacker News NativeJIT is an open-source, cross-platform library designed for high-performance just-in-time (JIT) compilation of C data structures expressions. Developed by the Bing team for the Bing search engine, it runs on Linux, OSX, and Windows without dependencies beyond the standard C++ runtime. The compiler is lightweight, fast, and optimized for register allocation, focusing on throughput and latency to efficiently process queries. NativeJIT compiles custom expressions for queries to score documents based on keyword matches with user intent |
Continuous Glucose Monitoring Published: 2025-06-30 | Origin: Hacker News Continuous glucose monitoring (CGM) devices have traditionally been prescription-only and expensive, primarily used by type 1 diabetics for blood glucose regulation. However, recent advancements in technology and regulation have made CGMs available over the counter for around $50, allowing non-diabetics to explore the technology. The CGM resembles a thick guitar pick housed in a larger plastic casing. It takes glucose readings every five minutes and transmits data every 15 minutes, requiring a smartphone for data reception. The device |
Duke Nukem 3D code review by Tariq10x Published: 2025-06-30 | Origin: /r/programming Sure! Please provide the content you would like me to summarize. |
Flecs v4.1, an Entity Component System for C/C++/C#/Rust is out! Published: 2025-06-30 | Origin: /r/programming Flecs is an open-source Entity Component System (ECS) for C and C++ aimed at developing games and simulations. It is licensed under the MIT license, and users can support it by giving a star on its GitHub page. Since the release of version 4.0, several exciting games have utilized Flecs, including: 1. **Tempest Rising** - A real-time strategy game set in a post-apocalyptic Earth after a nuclear war. 2. **Resistance is |
Cell Towers Can Double as Cheap Radar Systems for Ports and Harbors (2014) Published: 2025-06-29 | Origin: Hacker News Researchers at the Fraunhofer Institute in Germany have developed a new security system for detecting ships at seaports using existing cellular towers, leveraging a technology called Passive Coherent Location (PCL). This method utilizes the radio signals emitted by cell towers to identify the location of vessels, much like radar, but with weaker signals that are more challenging to interpret. By analyzing how these signals bounce off objects in the water, the PCL system creates a dynamic map of port traffic. The key challenge is filtering |
Ask HN: What Are You Working On? (June 2025) Published: 2025-06-29 | Origin: Hacker News The content discusses two main topics: 1. **Mochi Language Development**: An individual is creating Mochi, a small programming language with a custom virtual machine (VM) designed for efficiently querying structured data formats like CSV and JSON. Initially an experiment for LINQ-style queries, it has evolved to include features such as declarative queries, a register-based VM for optimization, an intermediate representation with various analyses, static type inference, and testing support. 2. **Nest Thermostat Support Update** |
I built a CPU emulator with its own assembler in java Published: 2025-06-29 | Origin: /r/programming The content discusses a custom-built 32-bit CPU emulator named Neptune, developed in Java for educational and experimental purposes. It includes an integrated assembler and assembly language, simulating RAM, ROM, VRAM, stack, heap, and memory-mapped I/O devices. Neptune employs little-endian word addressing and fixed-size instructions, allowing for 32 general-purpose registers and a FLAGS register with four boolean flags. Contributors are encouraged to submit pull requests for enhancements. The project is released under the MIT License or |
Reimplementing Dynamic Arrays Published: 2025-06-29 | Origin: /r/programming The message indicates that all feedback is valued and taken seriously. It also mentions that additional qualifiers can be found in the documentation. Additionally, it reports an error during loading and suggests reloading the page. |
Code is skimmed more often than it is written, so it should be clear at a glance Published: 2025-06-29 | Origin: /r/programming In software engineering, it is often said that "code is read more than it is written," highlighting the importance of code maintenance over initial creation. As we spend more time fixing bugs and adding features than writing new code, the ability to understand existing code becomes crucial. Code is often skimmed rather than thoroughly read, as developers navigate complex codebases to quickly grasp functionality without recalling every detail. This skimming occurs multiple times for each piece of code read. To facilitate this process, it's essential to write |
Tools I love: mise(-en-place) Published: 2025-06-29 | Origin: /r/programming Mise is a transformative tool for managing software installation and environment configurations, streamlining processes associated with language-specific version and package managers like asdf and pyenv. It simplifies the installation and use of software while enabling users to manage environment variables and declare task commands. To get started with mise, users are encouraged to install a tool of their choice; it supports a variety of applications. For instance, the author successfully installed the tool "jj" using the command `mise use jj`, which also generated |
A Primer on Memory Management Published: 2025-06-29 | Origin: /r/programming A variable is an abstraction in programming that stores data in memory, characterized by two main attributes: the actual value (data) and the type of data it holds (data type). Variables can represent various forms of data, including integers, strings, and more complex structures. They may be stored in CPU registers, during compile time, or primarily in the device's memory (RAM). The primary memory is likened to an extensive array of bytes, with size considerations differing between 32-bit (4 Gi |
Sunday reads for EMs Published: 2025-06-29 | Origin: /r/programming Stephane introduces a new weekly series sharing his favorite reads, focusing on building resilient teams and improving engineering management. Key highlights include: 1. **Building Resilient Teams**: Charity discusses that the focus on "10x engineers" is misguided; success comes from effective teams supported by good systems, culture, and leadership rather than individual brilliance. Emphasizes shorter deploy cycles and inclusive practices. 2. **Product-First Engineering**: An article for engineering managers argues against viewing engineers solely as |
I made my VM think it has a CPU fan Published: 2025-06-29 | Origin: Hacker News Certain malware samples employ various techniques to detect if they are operating within a virtual machine (VM), including checking for hardware components not commonly emulated in virtualization, such as the CPU fan. One method involves looking for the Win32_Fan class in Windows Management Instrumentation (WMI), as malware aims to avoid running in VMs to hinder analysis by security researchers. The article focuses on the CPU fan, elaborating that malware can detect virtual hardware through multiple WMI classes. The computer identifies the |
Tracking Anticheat Updates Published: 2025-06-29 | Origin: /r/programming The author details their research into anti-cheat systems, motivated by a curiosity about tracking updates. They focus on EasyAntiCheat (EAC), noted for its advanced technology used in popular games like Rust and Fortnite. After EAC's acquisition by Epic Games, the update distribution shifted to a new CDN with a different URL structure. The author notes that the downloaded files have high entropy, indicating they are likely encrypted or compressed. While analyzing the data, they observed that the header remains consistent across versions |
Test names should be sentences 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 |
Dyson Sphere Program - The New Multithreading Framework Published: 2025-06-29 | Origin: /r/programming Sure! Please provide the content that you would like me to summarize. |