Category: Development

Blazing Fast Concurrent Hash Map for Go: cmapv2

2025-06-17
Blazing Fast Concurrent Hash Map for Go: cmapv2

This article introduces cmapv2, a high-performance concurrent hash map library for Go. Leveraging the MurmurHash algorithm, it offers both regular and sharded map types for various concurrency needs. Example code demonstrates initialization, insertion, retrieval, and deletion of key-value pairs. The article also details performance testing using `go test` and `pprof` for CPU and memory profiling.

Development Concurrent HashMap

arXivLabs: Experimental Projects with Community Collaborators

2025-06-17
arXivLabs: Experimental Projects with Community Collaborators

arXivLabs is a framework that lets collaborators develop and share new arXiv features directly on our website. Individuals and organizations working with arXivLabs embrace our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners who share them. Have an idea for a project that will benefit the arXiv community? Learn more about arXivLabs.

Development

ARIA: A Powerful Tool for Web Accessibility, and Its Pitfalls

2025-06-17
ARIA: A Powerful Tool for Web Accessibility, and Its Pitfalls

This article delves into the role of ARIA (Accessible Rich Internet Applications) in web accessibility, exposing common misconceptions. ARIA isn't a silver bullet; it supplements native HTML elements, providing additional information for assistive technologies like screen readers to enhance interactivity, purpose, and state understanding. The article covers ARIA's history, usage rules, its grammatical structure (roles, states, and properties), and challenges in real-world application, such as varying assistive technology support and ARIA attribute misuse. The author advocates prioritizing semantic HTML, using ARIA judiciously, and emphasizes manual testing to ensure correctness and effectiveness. Ultimately, the article connects ARIA usage with care for disabled people, urging developers to prioritize accessibility and build a more inclusive web.

Codecov's Mandatory AI Feature Sparks User Concerns

2025-06-17
Codecov's Mandatory AI Feature Sparks User Concerns

A new AI feature in Codecov has sparked user concern due to the lack of a disable option. Users worry about Codecov illicitly training AIs on their code or inserting infringing code without permission. They demand a permanent, clear way to disable AI functionality across all their organizations and a guarantee that AI won't be used for code coverage analysis.

Development

WireGuard: 1Gbps Network Saturation Achieved

2025-06-17

The author previously assumed encryption was too slow to achieve network saturation, even on Gigabit Ethernet. However, recent testing revealed WireGuard, running on readily available servers (Xeon E-2226G), readily saturated a 1Gbps network without special tuning, exhibiting low CPU usage. This challenged the author's assumptions about encryption speed, suggesting many methods could theoretically saturate a 1Gbps link, and highlighting potential performance tuning needs for existing VPN servers.

faynoSync: Automated Client Application Update API Server

2025-06-17
faynoSync: Automated Client Application Update API Server

faynoSync is a Go-based API server for automatically updating client applications. Upload your app to S3, set the version number, and clients check for updates. If a newer version exists, the server returns an update link, prompting a client alert. It supports background and on-demand updates, with full documentation, a frontend dashboard, and example client applications. Deployment involves setting environment variables, simplified with Docker, and extensive unit tests ensure functionality.

AI Code Assistants: Blessing or Curse?

2025-06-17
AI Code Assistants: Blessing or Curse?

AI coding assistants are becoming increasingly sophisticated, generating clean and efficient code. However, this can lead to 'premature closure,' where developers are seduced by seemingly perfect solutions and overlook deeper issues. The article uses a medical analogy, comparing AI to experienced doctors who might miss a rare condition due to their experience. The author advises developers to critically evaluate AI suggestions, actively explore multiple solutions, and avoid falling into the trap of quick fixes to improve code quality and prevent accumulating technical debt.

Development

The Humble Programmer: Reflections on Software Crisis and the Future of Programming

2025-06-17

This essay is a transcript of Edsger W. Dijkstra's renowned 1972 lecture, exploring the early days of programming and the escalating software crisis. Dijkstra recounts the initial lack of recognition for programming as a profession, and how the exponential increase in computer power led to a corresponding explosion in software complexity, culminating in the software crisis. He argues that the solution lies in a paradigm shift in programming methodologies, advocating for 'intellectually manageable programs' and stressing the importance of program correctness proofs, while warning against overly complex programming languages. He expresses confidence that improved languages, more structured programming approaches, and a focus on correctness will dramatically enhance software quality and development efficiency.

Building Accessible UIs: It's Not Just Moral, It's Efficient

2025-06-17
Building Accessible UIs: It's Not Just Moral, It's Efficient

This article argues for accessible UI design not from a moral standpoint, but from a practical one. The author details several benefits: improved debuggability (semantic HTML makes code easier to understand), better naming conventions (ARIA attributes provide standardized names), enhanced testability (semantic testing is more robust), and a superior user experience, especially for keyboard users. The author contends that building accessible UIs isn't difficult and offers numerous advantages, urging developers to prioritize accessibility.

Development accessible UI

Unlocking ZX Spectrum Graphics: A Deep Dive into Memory Addressing

2025-06-17
Unlocking ZX Spectrum Graphics: A Deep Dive into Memory Addressing

This article delves into the intricacies of graphics programming on the ZX Spectrum. It explains how the Spectrum's video memory isn't a simple pixel grid, but rather a combination of pixel and attribute areas, with each attribute block controlling 8x8 pixels' color and effects, leading to the famous 'attribute clash'. The author details pixel address calculation methods, including direct formula calculation, incremental methods, and highly efficient table lookups, providing JavaScript and Z80 assembly code examples to draw points and 8x8 graphics. Mastering these techniques is crucial for efficient graphics programming on the Spectrum.

Development

Compiler IR Design: Local Decisions and Optimization

2025-06-17
Compiler IR Design: Local Decisions and Optimization

This post explores compiler intermediate representation (IR) design, focusing on making decisions using only local information. The author compares control-flow graphs (CFGs), register-based IRs, and Static Single Assignment (SSA) form, introducing more advanced designs like Static Single Information (SSI) and Sea of Nodes (SoN). SSA simplifies analysis by assigning each variable only once, while SSI allows adding finer-grained information to the same variable across different program branches. SoN represents all instructions as graph nodes, explicitly representing data and control dependencies for more flexible optimization. These designs aim to make compiler optimizers more efficient, ultimately generating more optimized code.

Generative AI Coding Tools: My Personal Experience

2025-06-17
Generative AI Coding Tools: My Personal Experience

The author shares their personal experience using generative AI coding tools, concluding that they haven't improved their workflow. While AI can generate code quickly, the author finds that thorough code review is necessary to ensure quality and reliability, and this review often takes as long as writing the code itself. Furthermore, AI-generated code lacks contextual understanding and learning capabilities, like an intern with anterograde amnesia, unable to retain knowledge. The author believes that those claiming AI coding tools increase productivity are either lowering quality standards or benefitting from selling AI.

Development

LLM Agent Auto-Discovers Enterprise IdP's OpenID Connect Configuration

2025-06-17

An LLM agent successfully discovered an enterprise Identity Provider's (IdP) OpenID Connect configuration based on a pre-configured issuer. A GET request to /.well-known/openid-configuration returned a JSON response containing crucial information, including authorization, token, and userinfo endpoints, JWKS URI, and supported scopes and grant types. Notably, the configuration supports the Token Exchange grant type (urn:ietf:params:oauth:grant-type:token-exchange), enhancing authentication flexibility.

Development

Chawan TUI Browser 0.2.0 Released

2025-06-16

Chawan, a text-user interface (TUI) browser, has released version 0.2.0. This release includes all the features envisioned for a Minimum Viable Product (MVP) and has no known critical bugs. Source code and a static binary distribution for amd64 Linux are available, along with a .deb package. Dependencies zlib, libseccomp, termcap/ncurses, and libcurl have been removed. Future work will focus on improving the layout module's performance and correctness, and making the UI more user-friendly.

YC-Backed Fintech Startup Blaze Hiring AI-Driven Software Engineer

2025-06-16
YC-Backed Fintech Startup Blaze Hiring AI-Driven Software Engineer

Blaze, a YC-backed fintech startup in Mexico City, is hiring a Junior Software Engineer. The role involves leveraging AI tools like Cursor to accelerate the development of their payment platform's front-end and back-end. Ideal candidates will possess strong JavaScript, React, and AI development tool knowledge, and a passion for fintech. Blaze offers competitive compensation, equity, and the opportunity to grow in a fast-paced environment.

Development

arXivLabs: Experimenting with Community-Driven Features

2025-06-16
arXivLabs: Experimenting with Community-Driven Features

arXivLabs is a framework for collaborators to build and share new arXiv features directly on the website. Participants, individuals and organizations alike, embrace arXiv's values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners who share them. Got an idea for a valuable community project? Learn more about arXivLabs.

Development

Canine: Effortless Kubernetes Cluster Deployment

2025-06-16
Canine: Effortless Kubernetes Cluster Deployment

Canine is an intuitive and easy-to-use deployment platform for Kubernetes clusters. With Docker and Docker Compose installed, deployment is a breeze – simply run a single command or clone the Git repo and run Docker Compose. Customize the web UI port easily and explore cloud-based features like GitHub integration, role-based access control, real-time metrics, and reduced maintenance for streamlined team collaboration.

Development

GitHub Copilot's Agent Mode: AI-Powered Code Editing Revolution

2025-06-16
GitHub Copilot's Agent Mode: AI-Powered Code Editing Revolution

GitHub Copilot's new Agent mode in Visual Studio lets developers use natural language to describe high-level tasks. The AI autonomously reasons through the request, plans the work, and applies code changes. Unlike Copilot Chat, Agent mode can run commands and builds, iterate on errors, and invoke tools to complete tasks. Developers simply input their needs, and Copilot automatically determines the relevant context and files to edit, supporting multiple tool invocations. Copilot detects and resolves issues in code edits and terminal commands, allowing users to review and confirm changes incrementally. Administrators can control Agent mode usage via the GitHub Copilot dashboard.

Development AI code editing

Free Cruise Ship Wi-Fi: A High Schooler's Python Script

2025-06-16
Free Cruise Ship Wi-Fi: A High Schooler's Python Script

Facing exorbitant cruise ship internet costs, a teenager on a Princess Cruises voyage cleverly exploited a loophole in the company's 15-minute free Wi-Fi offer for app downloads. He wrote a Python script to automate the process of changing MAC addresses, logging into the ship's network, and requesting the free internet session. This yielded unrestricted, high-speed internet (7+ Mbps) for hours. The script, aided by an OpenWRT router and LLMs for coding assistance, overcame challenges like request repetition and error handling, ultimately achieving free internet access.

Development Free Wi-Fi

Contribute to Transitous: An Open Source Public Transit Routing Service

2025-06-16

Transitous, a community-run public transport routing service built on the MOTIS engine and thousands of global datasets, powers features in apps like GNOME Maps. This post details how to contribute data improvements: First, verify Transitous data against reality; then, learn how to add and improve GTFS static data, GTFS Realtime data (including trip updates, service alerts, and vehicle positions), GBFS shared mobility data, and GTFS-Flex on-demand service data. Finally, it encourages contributions to OpenStreetMap data, particularly indoor floor level information. Transitous welcomes contributions of all kinds, whether code, data, math, transportation expertise, or IT operations.

Development data contribution

Darklang: From Funding Drought to Open Source Rebirth

2025-06-16
Darklang: From Funding Drought to Open Source Rebirth

Dark Inc, the company behind the statically-typed functional programming language Darklang, has run out of money and officially shut down. However, Darklang lives on. Its assets – the language, blog, hosted service, etc. – have been acquired by Darklang Inc, a new company founded by former Dark Inc employees. The new company plans to open-source Darklang, enabling it to run anywhere. Dark Inc's failure stemmed from early aggressive growth, rapid cash burn, and a failure to adapt to the rise of code-generating tools in the age of ChatGPT. However, Darklang's core strength – immutability – has become even more crucial in the LLM era, making code easier to understand and safer to run. The founder is now focused on Tech for Palestine, an organization addressing issues related to Palestine.

Development

Darklang Goes Open Source: A Journey from Closed Source to Community Embrace

2025-06-16
Darklang Goes Open Source: A Journey from Closed Source to Community Embrace

Darklang, a programming language initially launched as a closed-source, hosted-only platform, has announced that it's open-sourcing all its repositories. This shift stems from product maturity, user feedback, and a change in technical direction. Initially, Darklang's closed-source approach aimed to ensure sustainability and deliver unique features like safe code migration and unified deployment. However, with product maturity, user requests for more openness, and the emergence of local-first development and new business models (e.g., paid team collaboration and AI tools), Darklang chose to embrace open source to foster community growth and the platform's long-term evolution. While some technical challenges remain, such as licensing implications in package management, the open-sourced Darklang will be more transparent and accessible.

Development

OpenTelemetry Performance Overhead: A Go Application Benchmark

2025-06-16
OpenTelemetry Performance Overhead: A Go Application Benchmark

This post benchmarks the performance overhead of OpenTelemetry in a high-load environment using a simple Go HTTP server. Results show approximately a 35% increase in CPU usage, a small increase in memory, and significant network traffic increase when enabling OpenTelemetry. The author compares using the OpenTelemetry SDK with eBPF-based monitoring, finding the latter to be significantly more lightweight in high-load scenarios, especially when only collecting metrics. The conclusion is that OpenTelemetry's overhead isn't prohibitive, but choosing the right monitoring approach is crucial, requiring a trade-off between performance and observability based on specific needs.

Development

arXivLabs: Experimental Projects with Community Collaborators

2025-06-16
arXivLabs: Experimental Projects with Community Collaborators

arXivLabs is a framework enabling collaborators to develop and share new arXiv features directly on the website. Individuals and organizations involved embrace arXiv's values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only partners with those who share them. Have an idea to enhance the arXiv community? Learn more about arXivLabs.

Development

dk coder: Empowering Non-Programmers to Build Secure Apps

2025-06-16
dk coder: Empowering Non-Programmers to Build Secure Apps

The dk coder is a script runner and cross-compiler designed for users with limited programming experience to build substantial, safety-focused applications. Its ease of use, portability, and IDE support tackles the 'README-itis' problem: lengthy READMEs deter users from installing, resulting in lost users. A Quick Walkthrough Guide introduces dk scripts with simple examples. Developers should consult the dk Runtime for supported Windows, macOS, and Linux versions. For scripting, refer to dk Parties for project organization and keep the dk Libraries and dk Macros manuals handy. Experienced OCaml users should check out the Coming From OCaml guide.

From Prison Cell to Turso Software Engineer: A Hacker News Story

2025-06-16
From Prison Cell to Turso Software Engineer: A Hacker News Story

An incarcerated programmer, serving time for drug-related offenses, landed a software engineering job at Turso. Using limited prison internet access, he dedicated himself to coding, contributing to open-source projects, and ultimately impressed Turso with his work on Project Limbo, a rewrite of SQLite. His story highlights perseverance, second chances, and the power of open source.

Development

Chat with AI over SSH: A Dockerized AI Chat Server

2025-06-16
Chat with AI over SSH: A Dockerized AI Chat Server

This project provides a Dockerized AI chat server accessible via SSH. It supports multiple AI models and offers detailed deployment instructions, including environment configuration, Docker Compose file, and dependency installation. Users can customize parameters like models, rate limiting, blacklist, and whitelist. The project also includes deployment suggestions for various operating systems (macOS, Linux, and Windows) and acknowledges server sponsorship from V.PS.

Development

Async Function Calls on Socket.io: Introducing socket-call

2025-06-16
Async Function Calls on Socket.io: Introducing socket-call

socket-call is a small library built on top of Socket.io that lets you call events like any regular async TypeScript function. It simplifies Socket.io usage, offering a cleaner and more intuitive programming experience. Code examples demonstrate server-side and client-side implementation, showcasing login functionality and server-to-client message sending.

Development

Kubernetes Slack Migration to New Platform Imminent

2025-06-16

The Kubernetes Slack workspace will be downgraded to a free plan on June 20th, resulting in a 90-day message history limit and the disabling of several apps and workflows. This is due to the workspace's size exceeding Slack's free plan capabilities. The Kubernetes community is exploring a migration to Discord, offering improved features and integrations, such as GitHub group membership synchronization. The Steering Committee will ultimately decide on the future platform.

Development

Zeekstd: A Seekable Zstandard Implementation in Rust

2025-06-16
Zeekstd: A Seekable Zstandard Implementation in Rust

Zeekstd is a Rust library implementing a seekable Zstandard format. It splits compressed data into independent frames for efficient random access. Fully compatible with the original specification, Zeekstd offers improvements and includes both encoder and decoder functionalities, allowing for decompression of entire files or specific frames. A command-line tool is also provided.

Development Seekable Compression
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