Category: Development

Lakehouse Tiering Strategies: Shared Tiering vs. Materialization?

2025-08-21
Lakehouse Tiering Strategies: Shared Tiering vs. Materialization?

This article explores data tiering strategies in lakehouse architectures. Direct access to shared tiers poses reliability risks; API access is preferable. Data lifecycle management requires a canonical metadata service coordinating primary and secondary storage locations. Schema management should be controlled by the primary system, ensuring compatibility with secondary storage. The choice between shared tiering and materialization depends on the location of stitching/conversion logic (client or server-side) and their respective pros and cons. With client-side stitching, the difference is minimal; server-side stitching requires careful consideration of metadata maintenance and real-time data processing integration.

Running Common Lisp in the Browser: Progress on the Web Embeddable Common Lisp Project

2025-08-21

The Web Embeddable Common Lisp (WECL) project aims to bring the Common Lisp runtime environment into web browsers. The project currently allows running Common Lisp code via `` tags and provides JS-FFI for low-level interaction between Common Lisp and JavaScript. Furthermore, LIME/SLUG enables interaction with WECL from Emacs. However, the project is still in its early stages, with limitations such as insufficient threading support and room for performance optimization. Future plans include porting to WASI to address these issues.

Development

Daemonless Docker Compose Builds with Podman, BuildKit, and a Pinch of Bakah

2025-08-21

Due to Docker's incompatibility with nftables and a preference for a rootless, daemonless approach, the author uses Podman to build a Docker Compose project. The article explores the shortcomings of using both the official Docker Compose CLI and podman-compose, ultimately achieving builds under Podman using the Docker Compose CLI and BuildKit by enabling the Podman socket, creating a Docker context. To avoid a BuildKit daemon, the author developed Bakah, a tool that converts Compose projects into Bake JSON files and uses Buildah for building, resulting in a completely daemonless build process.

Development

Revitalizing Your Mavericks: Giving an Old System New Life

2025-08-21

This guide shows you how to breathe new life into your aging OS X Mavericks system. It involves a simple script to update the system, replacing the outdated browser with a modern Firefox (Firefox Dynasty), using Aqua Proxy to fix HTTPS compatibility issues, adding new emojis, and setting up Time Machine backups. The guide also instructs users on deleting unwanted pre-installed apps such as Chess, iTunes, and iBooks for a personalized experience. The entire process is straightforward, making your Mavericks system run smoother and more tailored to your needs.

Development

CSS Infinity: A Curious Journey Through Browser Interpretations

2025-08-21
CSS Infinity: A Curious Journey Through Browser Interpretations

This article explores the quirky behavior of the `infinity` keyword in CSS calculation functions. By applying `infinity` to properties like `text-indent`, `word-spacing`, and `letter-spacing`, the author discovers inconsistencies in how different browsers handle infinite values, although the visual results consistently lead to horizontal overflow. More intriguingly, when used with `z-index`, the computed value of `infinity` is capped at the maximum integer value across browsers, resulting in unexpected stacking order. Finally, the author experiments with `infinity` for animation duration, finding that it translates to extremely long times, even causing Safari to render the page unresponsive. In short, the experiment reveals the different strategies browsers employ in handling infinite values in CSS and some surprising side effects.

Development

Elegant Dependency Injection in OCaml: An Object-Oriented Approach

2025-08-21

This article explores different approaches to dependency injection in OCaml and proposes a novel object-oriented solution. The author contrasts the shortcomings of existing methods using user-defined effects and modules as first-class values, arguing they are overly verbose and prone to errors in real-world applications. The new approach leverages OCaml's powerful object model, utilizing features like structural object types and row variables to achieve type-safe dependency injection with easy composition and extension. The article demonstrates the elegance and maintainability of this method through simple and more complex examples, comparing it to other approaches and ultimately recommending the object-oriented method for straightforward dependency injection scenarios.

Development Object Model

Mysterious `d4d4` Instructions in LLD: Not a Trap, But a Conditional Branch

2025-08-21

A programmer discovered numerous `d4d4` instructions in disassembled ARM code, always unreachable and identified by LLVM's objdump as a relative branch to -0x58. Experiments and analysis revealed these weren't added by the LLVM compiler, but by the LLD linker during object file boundary alignment. LLD uses `d4d4` as padding, intending it as a trap instruction. However, it's actually a conditional branch, acting as a relative jump in the Thumb instruction set. This seems like an LLD bug; it's not a true trap, potentially causing unpredictable jumps. The GNU linker uses zeros for padding, avoiding this issue.

Development

illumos Cafe: Another Cozy Corner for OS Diversity

2025-08-21
illumos Cafe: Another Cozy Corner for OS Diversity

Following the success of the BSD Cafe, the illumos Cafe project has launched. Similar in spirit to the BSD Cafe, illumos Cafe aims to provide services running on illumos-based operating systems, demonstrating their usability and promoting open-source OS diversity. Currently, it hosts Mastodon and snac instances, with plans to expand services. The project embraces a positive and inclusive philosophy, seeking to create a free and independent community, free from the control of large tech companies.

Development

Pure CSS 3D Engine: Building Realistic 3D Worlds with HTML Elements

2025-08-21
Pure CSS 3D Engine: Building Realistic 3D Worlds with HTML Elements

A developer spent months creating a stunning 3D environment demo using only CSS 3D transforms, HTML elements, and JavaScript. The demo features complex models, realistic lighting and shadows, and even collision detection. The article details the technical aspects, including creating 3D objects from rectangular elements, cleverly using gradients and canvas for lighting and shadow effects, and heightmap-based collision detection. This is not just a technical showcase; it demonstrates the immense potential of CSS in the field of 3D graphics.

Development 3D Engine

Deep Dive into Bluesky's Architecture: A Decentralized Social Network Under the Hood

2025-08-21
Deep Dive into Bluesky's Architecture: A Decentralized Social Network Under the Hood

This article provides a deep dive into the architecture of the ATProto protocol powering the decentralized social network Bluesky. It thoroughly explains core concepts like Records, Blobs, Lexicons, DIDs, and Handles, and details how server components such as PDS (Personal Data Server), Relay, AppView, Labellers, and Feed Generators work together. The author contrasts ATProto with the Fediverse and provides an overview of relevant SDKs, documentation, and community resources, offering developers a comprehensive guide to understanding and contributing to the Bluesky ecosystem.

Development

Zedless: A Privacy-Friendly, Local-First Fork of Zed

2025-08-21
Zedless: A Privacy-Friendly, Local-First Fork of Zed

Zedless is a work-in-progress fork of Zed designed to prioritize privacy and local-first principles. It removes reliance on proprietary cloud services, telemetry, and automatic crash reporting. It emphasizes bring-your-own-infrastructure, allowing users to configure providers for network services (with no defaults and disabled by default). Importantly, it avoids contributor license agreements and ensures proper licensing for all third-party dependencies.

Development

Formalizing Fermat's Last Theorem in Lean: A Collaborative Open Source Project

2025-08-21

An international collaboration led by Kevin Buzzard is undertaking the ambitious task of formally proving Fermat's Last Theorem using the Lean theorem prover. Funded by the UK's Engineering and Physical Sciences Research Council and hosted at Imperial College London, this project pushes the boundaries of mathematical proof verification. By using a computer to verify the proof, the project explores the potential of formalization and automated verification in mathematics, with implications for future research.

Development Lean theorem prover

SimpleIDE: Bringing Professional VB.NET Development to Linux

2025-08-21
SimpleIDE: Bringing Professional VB.NET Development to Linux

SimpleIDE is a lightweight, professional VB.NET IDE built with GTK# 3 on Linux using .NET 8.0. It provides a modern development environment for VB.NET projects, featuring multi-file tabbed editing, syntax highlighting, intelligent code completion, an integrated build system, debugging capabilities, and Claude AI assistance. SimpleIDE also boasts Git integration, customizable themes, and extensive keyboard shortcuts. This open-source project welcomes contributions.

Development

Python f-string Cheat Sheet: Mastering String Formatting

2025-08-21

This blog post presents a cheat sheet for Python's f-string formatting, covering various formatting options for numbers, integers, and strings, including fill, width, grouping, precision, and type. It also explores modifiers common to all objects, such as !s, !r, !a, and how to mix and match these modifiers with other format specifications. Whether you're working with numbers, integers, or strings, this cheat sheet empowers you to easily harness the power of Python f-strings, enhancing code readability and efficiency.

Development string formatting

UTCP 1.0.1: A Flexible and Extensible Universal Tool Calling Protocol

2025-08-21
UTCP 1.0.1: A Flexible and Extensible Universal Tool Calling Protocol

The Universal Tool Calling Protocol (UTCP) 1.0.1 is a modern, flexible, and scalable standard for defining and interacting with tools across various communication protocols. Its modular core and plugin-based architecture enhance extensibility, testability, and packaging. UTCP emphasizes scalability, interoperability, and ease of use, offering plugins for HTTP, SSE, CLI, and more. The new version features a refactored architecture separating the core library from optional plugins, along with an improved search strategy and variable substitution mechanism.

The Fundamental Flaw of Programming Languages: The Data vs. Object Debate

2025-08-21
The Fundamental Flaw of Programming Languages: The Data vs. Object Debate

The author argues that existing programming languages have a fundamental flaw in how they handle data and objects. They point out that languages need to distinguish between data (e.g., the integer 1) and objects (entities with identity and mutability). Many languages fail to clearly differentiate between the two, leading to code bloat and design challenges. The author believes ideal languages should allow developers to explicitly choose data or object representations and provide appropriate support. The article uses Java and Haskell as examples to contrast object-oriented and functional languages' approaches to data and objects, analyzing Erlang's advantages in this regard. The conclusion advocates for clearer distinctions between data and objects in programming language design to improve efficiency and code quality.

Development objects

DiffMem: Git-Based Differential Memory for Smarter AI Agents

2025-08-21
DiffMem: Git-Based Differential Memory for Smarter AI Agents

DiffMem is a lightweight, Git-based memory system designed for AI agents and conversational systems. It leverages Markdown for human-readable storage, Git for version control and tracking memory evolution, and an in-memory BM25 index for fast retrieval. This proof-of-concept demonstrates how version control can create efficient, scalable memory for AI. DiffMem treats memory as a versioned repository, separating the current state from historical changes. This allows for efficient queries on the current knowledge while preserving the full history for deeper analysis. It addresses challenges in traditional AI memory systems like scalability and query efficiency, offering a human-readable, easily portable, and auditable solution. The system is composed of a writer agent, context manager, searcher agent, and an API layer. While currently a prototype, DiffMem showcases a promising approach to long-term AI memory management.

Development

Failed Experiment: A Git-Based Code Review Tool

2025-08-21
Failed Experiment: A Git-Based Code Review Tool

The author experimented with a tool called `git-review` to improve GitHub's code review process. The core idea was to treat code review as a commit stored within the repository, using in-code comments for review. However, the experiment was not successful. While adding comments directly to the code was highly efficient, modifying code under review proved tricky, especially dealing with conflicts and the friction of using `git push --force-with-lease`. The author ultimately abandoned the project but believes the core idea—in-code review—is valuable, and looks forward to future possibilities of improving code review through Git improvements.

Development

PlutoPrint: Lightweight Python Library for Generating PDFs and Images from HTML/XML

2025-08-21
PlutoPrint: Lightweight Python Library for Generating PDFs and Images from HTML/XML

PlutoPrint is a lightweight Python library for generating high-quality PDFs and images directly from HTML or XML. Based on PlutoBook's rendering engine, it offers a simple API for creating reports, invoices, or visual snapshots. Use it via command line or Python API; pre-built binaries are available for Windows and Linux 64-bit. It even integrates with Matplotlib for generating and embedding charts.

AI Revolutionizes Chip Design: Experts Weigh In

2025-08-20
AI Revolutionizes Chip Design: Experts Weigh In

Semiconductor engineering experts discussed how AI can be applied to chip design to maximize its value and impact the design process. They envision AI shifting chip design from broadly domain-specific to a more granular approach with domains and sub-domains, catering to the unique needs of different verticals (e.g., automotive or mission-critical applications). AI tools promise to automate processes, improve debug analysis, and ultimately lead to fully autonomous workflows (Level 5), potentially reducing reliance on junior engineers. However, challenges remain in ensuring AI reliability and making its decision-making process transparent and understandable to engineers, guaranteeing design quality and efficiency.

Development

Google's Pytype Project to End Support After Python 3.12

2025-08-20
Google's Pytype Project to End Support After Python 3.12

Google's static type checker for Python, Pytype, is reaching the end of its development lifecycle. Since its inception in 2012, Pytype has served Google developers well, contributing significantly to Python's type system. However, its bytecode-based design has proven limiting for future feature development. Google is shifting its focus to newer approaches, making Python 3.12 the last supported version. The team expresses gratitude to all contributors, especially Rebecca Chen for her decade of dedication. The Python typing ecosystem is robust; developers are encouraged to explore other mature solutions.

Development

Luminal: A High-Performance Deep Learning Library with Search-Based Compilation

2025-08-20
Luminal: A High-Performance Deep Learning Library with Search-Based Compilation

Luminal is a deep learning library achieving high performance through search-based compilation. Its core is remarkably minimal, built upon just 12 primitive operations yet capable of supporting complex models like Transformers and convolutional networks. By aggressively fusing kernels and compiling shape-specific kernels at compile time, Luminal overcomes typical RISC limitations and automatically derives complex optimizations like Flash Attention. Its static compilation approach avoids runtime overhead, with Metal and CUDA support enabling fast execution on Macs and Nvidia GPUs. Significant performance gains have been demonstrated on models such as Llama 3 8B.

Development

Visual Drum Machine Built with React Flow

2025-08-20
Visual Drum Machine Built with React Flow

A visual drum machine and pattern sequencer built with Strudel.cc, React Flow, and styled with Tailwind CSS. Create complex musical patterns by connecting instrument and effect nodes via a drag-and-drop interface. Features include a wide array of instruments and effects, real-time pattern editing, group controls, and a well-organized project structure using Zustand for state management. A comprehensive getting-started guide is provided.

Development visual drum machine

Zed IDE Raises $32M Series B to Revolutionize Code Collaboration

2025-08-20
Zed IDE Raises $32M Series B to Revolutionize Code Collaboration

Zed, a blazing-fast IDE, announced a $32M Series B funding round led by Sequoia Capital, bringing its total funding to over $42M. Zed's vision is to fundamentally change how software is built by connecting conversations about code directly to the code itself, moving beyond outdated snapshots and scattered tools. They're building DeltaDB, a new operation-based version control system that incrementally tracks code evolution with edit-level granularity, integrating it into Zed for seamless human-AI collaboration. This investment will fuel Zed's mission to create a collaborative workspace where code, discussions, and AI assistance converge, reshaping the future of software development.

Development

typed-arrow: Zero-Runtime-Overhead Arrow Schemas in Rust

2025-08-20
typed-arrow: Zero-Runtime-Overhead Arrow Schemas in Rust

typed-arrow is a Rust library providing a strongly typed, fully compile-time way to declare Arrow schemas. It maps Rust types directly to arrow-rs typed builders/arrays and arrow_schema::DataType, eliminating runtime DataType switching. This results in zero runtime overhead, monomorphized column construction, and ergonomic ORM-like APIs. The library supports a wide range of data types, including nested structs, lists, dictionaries, and timestamps, offering flexible building methods for efficient and safe Arrow data manipulation.

Development

Moving Objects in 3D Space with Math

2025-08-20
Moving Objects in 3D Space with Math

This article explores moving objects in 3D space, specifically along a spherical helix path. Starting with simple circular motion, the author explains how sine and cosine functions can control an object's x, y, and z coordinates to create spirals and more complex trajectories. The core concept is using parametric equations, defining the object's 3D position as a function of time. What appears as complex dynamic effects are ultimately derived from simple mathematical functions.

Development 3D graphics

OCaml Editor Gets a Major Boost: Powerful Refactoring Capabilities

2025-08-20
OCaml Editor Gets a Major Boost: Powerful Refactoring Capabilities

During my internship, I added powerful refactoring capabilities to OCaml's Merlin compiler, starting with an "extract toplevel expression" feature. This feature extracts selected expressions into new `let` bindings, supporting constants and expressions (including those using variables), and cleverly handling OCaml's purity issues. Implemented via the Language Server Protocol (LSP) with both code action and custom request interaction methods, the feature is in PRs and nearing merge. This marks a significant step towards an IntelliJ-like editor experience for OCaml, with plans for more refactoring tools in the future.

Development

Rails in 2025: Lago's Case for Sticking with the Familiar

2025-08-20
Rails in 2025: Lago's Case for Sticking with the Familiar

Lago shares its experience building its API with Ruby on Rails. Despite the rise of Python, Go, and JS, they've stuck with Rails, prioritizing its speed in delivering a product. They address scalability concerns, arguing it's an architectural and operational issue, not a framework limitation. With proper design and optimization, Rails handles millions of API requests. The article also acknowledges Rails' weaknesses—performance, concurrency, and 'magic'—and how they use Go and Rust to compensate. Ultimately, they argue that language choice depends on quickly delivering a great product, and Rails fits the bill for their team.

Development

arXivLabs: Experimenting with Community Collaboration

2025-08-20
arXivLabs: Experimenting with Community Collaboration

arXivLabs is a framework for collaborators to develop and share new arXiv features directly on the site. 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 partners with those who share them. Got an idea for a project that will benefit the arXiv community? Learn more about arXivLabs.

Development

Ship Faster, Better: Parallel AI-Assisted Development with Claude Code

2025-08-20
Ship Faster, Better: Parallel AI-Assisted Development with Claude Code

Claude Code PM revolutionizes software development by combining spec-driven development, GitHub Issues, Git worktrees, and multiple parallel AI agents. It tackles common team collaboration woes: context switching, merge conflicts, requirements drift, and invisible progress. The system transforms PRDs into epics, epics into GitHub issues, and issues into production code with full traceability. Multiple Claude instances work concurrently, enabling true team collaboration and seamless human-AI handoffs. The result? Increased speed, fewer bugs, and a dramatically improved workflow.

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