Published: 2025-06-30 | Origin: Hacker News

The article discusses a unique technique for creating type-safe generic data structures in C by utilizing unions to associate type information. The author demonstrates this approach using a basic linked list as an example, noting that their method can be applied to various data structures such as maps, arrays, and binary trees. The conventional method for achieving generics in C involves using macros in header files and including them multiple times for different types, though this has some drawbacks. Another popular but type-unsafe method involves using `void *

Published: 2025-06-30 | Origin: /r/programming

The content discusses a project called MSPaintComputer, which aims to build a functional computer that operates within Microsoft Paint. Initially sparked as a humorous idea about poorly executing statistics, it evolved into a hobby. The creator designed a complete set of logic gates using only the eyedropper and fill tools in MS Paint, which led to the creation of an 8-bit ripple-carry adder and an 8-bit adder/subtractor circuit. Instructions for executing an AND gate are provided, along with

Published: 2025-06-30 | Origin: /r/programming

The author shares a personal experience at the hospital during the birth of their newborn, highlighting the importance of admitting "I don’t know." As they asked multiple midwives about a specific symptom their partner was experiencing, they encountered hesitation and conflicting answers, leading to frustration. However, one midwife broke the pattern by openly admitting she didn't know the answer, which fostered trust. She later returned with the correct information after consulting a doctor, demonstrating the value of honesty. The storyteller reflects on how in their

Published: 2025-06-30 | Origin: Hacker News

Researchers at the Johns Hopkins Applied Physics Laboratory (APL) have developed a new solid-state thermoelectric refrigeration technology using nano-engineered materials that is twice as efficient as conventional bulk thermoelectric devices. This advancement addresses the increasing global demand for energy-efficient and compact cooling solutions, offering a scalable alternative to traditional compressor-based systems. In a study published in Nature Communications, the APL team collaborated with Samsung Research to demonstrate enhanced efficiency and capacity in refrigeration systems utilizing a novel material known as controlled hierarchically

Published: 2025-06-30 | Origin: Hacker News

The content discusses the significant advancements in artificial intelligence (AI) over the past fifteen years, particularly in the last five. While some claim there is a "Moore's Law for AI," suggesting exponential improvements in specific coding tasks, the author expresses skepticism about this framing but acknowledges ongoing progress. AI systems are becoming smarter, faster, and cheaper without any foreseeable end. This continuous improvement is attributed to the contributions from a mix of research communities in academia (e.g., MIT, Stanford, CMU)

Published: 2025-06-30 | Origin: /r/programming

In his blog, Leon Adato discusses his experience in the monitoring and observability field, focusing on OpenTelemetry (OTel) as a recent advancement. While he enjoys exploring OTel, he highlights a persistent issue with observability tools, specifically regarding their pricing structures. Adato compares consumption-based pricing models from various vendors, noting that many charge not only for data ingestion but also for storage and query services. He emphasizes that pricing information provided by companies can be misleading and that many are re-evalu

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)

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

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

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.

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

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

Published: 2025-06-30 | Origin: /r/programming

Sure! Please provide the content you would like me to summarize.

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

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

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**

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

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.

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

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