Published: 2025-04-30 | Origin: /r/programming

The post discusses the complexities involved in getting and limiting the length of strings in programming, which are common tasks but can lead to bugs and vulnerabilities. It emphasizes that while string length functions may appear straightforward, they can be misleading due to technical nuances. The author highlights four common measures of string length used in programming languages: UTF-8 bytes, UTF-16 code units, Unicode code points, and grapheme clusters. A "character" is defined as the smallest unit of written language, encompassing letters

Published: 2025-04-30 | Origin: Hacker News

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Published: 2025-04-30 | Origin: /r/ruby

The provided content appears to be a section of raw binary data from a PNG image file, rather than meaningful text. It includes elements such as the PNG header (IHDR), various binary codes, and metadata that are unreadable in standard text formats. Due to the binary nature of the content, it can't be summarized like a conventional text. For analysis or processing, specialized image software or tools would be required to interpret the data correctly.

Published: 2025-04-30 | Origin: Hacker News

Zhaoxin, a Chinese x86 CPU designer and joint venture between VIA Technologies and the Shanghai municipal government, has released its latest CPU, the KaiXian KX-7000, featuring a new architecture called "世纪大道" (Century Avenue). This architecture, named after a Shanghai landmark, aims to enhance performance, building on Zhaoxin's previous CPU, the KX-6640MA, which struggled with modern applications due to its older 2-wide core design. The KX

Published: 2025-04-30 | Origin: /r/programming

In April, significant advancements were made in running x86-64 programs on RISC-V Linux, particularly thanks to donor support, including a notable $1000 contribution from Sonicadvance1 of FEX-Emu for hardware and games. The process of using a GPU with a RISC-V board proved to be challenging. After initial attempts with an NVIDIA GTX 1050 Ti and an AMD Radeon HD 7790, success was achieved with an AMD HD 7350 due to better compatibility.

Published: 2025-04-30 | Origin: /r/programming

Developing applications that require secure storage of sensitive data can be challenging, particularly with Azure Key Vault, which is a reliable security product for protecting items like API keys and certificates. In a development environment, deploying an actual Azure Key Vault is often necessary, leading to complications such as navigating security policies and potential delays due to access issues. To address these hurdles, Microsoft has released a stable version of the Azure Key Vault Emulator, which allows developers to simulate the Key Vault functionality locally. This emulator can be run

Published: 2025-04-30 | Origin: Hacker News

The author recounts their journey into Linux kernel exploit development, sparked by a seemingly simple bug patch labeled exp237 from the KernelCTF submissions. Intrigued by the ease with which a researcher escalated privileges using this bug, they decided to explore it further, even at the cost of their GPA. The process involved setting up a debugging environment with QEMU and using the gef-kernel GDB extensions while working within WSL on a Windows computer. The patch in question addressed a transport reassignment

Published: 2025-04-30 | Origin: /r/programming

The content discusses a method to combine data from two separate computers—one that stores a user's name and another that stores a favorite color—into a single interactive component within React. It introduces the concept of splitting the component into two parts: **GreetingBackend**, which reads the color data from one computer, and **GreetingFrontend**, which interacts with the user and displays the greeting. The backend component serves as the source of truth, supplying the data to the frontend, and maintaining React's top-down data

Published: 2025-04-30 | Origin: /r/ruby

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Published: 2025-04-30 | Origin: /r/ruby

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Published: 2025-04-30 | Origin: /r/programming

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Published: 2025-04-30 | Origin: /r/ruby

The post discusses the challenges that arise in a Rails app as it gains consistent traffic, particularly regarding slow SQL queries. While ActiveRecord has improved in performance and user experience, it can still generate inefficient SQL due to common pitfalls like N+1 queries and unnecessary data loading. Although databases, such as MySQL and PostgreSQL, can provide information on slow queries, they often don't offer actionable insights, making it difficult to correlate performance issues with specific code in ActiveRecord. The process of analyzing slow query logs

Published: 2025-04-30 | Origin: /r/programming

The article discusses optimizing JavaScript performance for responsive web applications by focusing on how the V8 engine compiles JavaScript functions. It highlights that during script processing, V8 can either compile functions eagerly or defer their compilation, impacting webpage loading speed. Eager compilation of functions called during page load improves performance, with a study showing significant reductions in parse and compile times for various popular web pages. A new feature called Explicit Compile Hints allows developers to control which JavaScript files and functions are compiled eagerly,

Published: 2025-04-30 | Origin: Hacker News

The summary of the content is as follows: The document emphasizes the importance of user feedback and highlights the release of the MiMo-7B series, a set of language models designed specifically for reasoning tasks. These models were trained from scratch and report significant reasoning potential, even outperforming larger models like the 32B variants in code reasoning capabilities. The work discusses both pre-training and post-training strategies as crucial for enhancing reasoning abilities. The MiMo-7B series includes various model checkpoints and has been

Published: 2025-04-30 | Origin: Hacker News

Dr. Ellie Irwin, a 29-year-old doctor from Bristol, had her eyesight saved after a unique test revealed a rare bacterial infection that caused persistent inflammation in her right eye for five years. Despite various treatments, including steroid drops and immunosuppressants, her condition worsened and led her to consider having her eye removed. A "last resort" metagenomics analysis finally identified the infection, which was treated successfully with antibiotics. Dr. Irwin described the outcome as transformative, and Professor

Published: 2025-04-30 | Origin: /r/programming

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Published: 2025-04-30 | Origin: /r/ruby

In the April 24, 2025 edition, Matt Solt covers key highlights from RubyKaigi in Ehime, featuring a keynote by Yukihiro "Matz" Matsumoto, the creator of Ruby. Matz discussed Ruby's potential in the AI era, emphasizing its conciseness and extensibility. The edition also includes an innovative SC2AI gem for building competitive StarCraft bots, developed by Dyson Returns, complete with documentation and tutorials available on GitLab and YouTube.

Published: 2025-04-30 | Origin: /r/programming

The post discusses Automatic Sparse Differentiation (ASD) as an underutilized method in machine learning, despite the common use of automatic differentiation (AD). It highlights the benefits of leveraging the sparsity in Hessians and Jacobians, which can lead to significant computational and memory efficiency improvements. The article aims to connect the machine learning and automatic differentiation communities by explaining key techniques in ASD, including sparsity pattern detection and matrix coloring. It covers the computation of sparse Jacobians and Hessians and concludes

Published: 2025-04-30 | Origin: Hacker News

The content emphasizes the importance of user feedback and provides a brief overview of a project involving running Linux within Excel. The project utilizes a mini-rv32ima emulator, which is built as a separate DLL and accessed through a VBA macro that inputs the emulator's output into Excel cells. Although the project is functional, it is described as "buggy" and was primarily conducted for fun, without rewriting the emulator in VBA or Excel formulas. Additionally, it mentions using MSVC to build the DLL and provides

Published: 2025-04-30 | Origin: Hacker News

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