Hasty Briefsbeta

Bilingual

PipeWire Guide
4 months ago
- PipeWire is a multimedia server and API for handling audio and video pipelines with low latency.
- It supports PulseAudio, JACK, ALSA, and GStreamer applications, featuring a multiprocess architecture.
- Default in major Linux distributions like Fedora, Debian, Ubuntu, and openSUSE.
- Includes security features for containerized applications.
- Key tools: WirePlumber (session manager), EasyEffects (audio effects), Helvum (patchbay), qpwgraph (graph manager).
- Supports real-time audio/video processing and seamless integration with existing audio systems.
- Installation guides provided for Debian, Ubuntu, openSUSE, and Arch Linux.
- OBS Studio supports PipeWire for video recording and streaming.
- Wayland compatibility discussed, including tools like Weston, XWayland, and Sway.
- Creative Commons Attribution 4.0 license for the guide.
Show HN: Minimalist editor that lives in browser, stores everything in the URL
4 months ago
- A minimalist text editor that operates entirely in the browser and stores data in the URL hash.
- Features compression using deflate for text storage.
- Allows sharing notes via URLs, though they can be up to 500 characters long.
- Includes dark mode to respect user color scheme preferences.
- Auto-saves content with a 500ms debounce to prevent excessive saves.
- Mobile-friendly design for on-the-go usage.
- No backend required; operates without server support.
- Simple usage: open textarea.my, type, and observe URL changes.
- Supports custom page titles by starting the document with '# Title'.
- Advanced users can add styles via DevTools, which are saved in the URL.
Show HN: LoongArch Userspace Emulator
4 months ago
- High-performance LoongArch userspace emulator library for embedding and scripting applications.
- Built on libriscv architecture with competitive interpreter performance (~18k line codebase).
- Features include fast LoongArch interpreter with optional JIT, ultra-low latency call overheads (~4ns), and support for 64-bit LoongArch (LA64).
- Supports vector LSX and LASX instructions, with C++ API and Rust/Go bindings.
- Zero dependencies, execution timeout, memory safety, and first-class pause/resume support.
- Ideal for game engine scripting with significantly lower call overhead compared to traditional methods.
- CMake configuration options available for debug, binary translation, threaded bytecode dispatch, and memory settings.
- Example provided for loading and running a LoongArch ELF binary.
- Performance benchmarks show high memory rates and CoreMark scores, with JIT reaching up to 77% of native performance.
Show HN: Vibium – Browser automation for AI and humans, by Selenium's creator
4 months ago
- Vibium is a browser automation infrastructure designed for AI agents, test automation, and other browser-related tasks.
- It includes a single Go binary (~10MB) that handles browser lifecycle, WebDriver BiDi protocol, and exposes an MCP server.
- Vibium supports both synchronous and asynchronous APIs for browser control, including navigation, clicking elements, and taking screenshots.
- The tool automatically downloads and manages Chrome for Testing, eliminating manual setup.
- Vibium is compatible with multiple platforms (Linux, macOS, Windows) and architectures (x64, arm64).
- It integrates with Claude Code and other MCP clients, enabling AI agents to control browsers with minimal setup.
- Future roadmap includes Python and Java clients, AI-powered locators, video recording, and more.
- Vibium is open-source under the Apache 2.0 license.
Show HN: LazyPromise = Observable – Signals
4 months ago
- LazyPromise is a lazy, cancelable alternative to Promise with typed errors and synchronous emission.
- Key differences from Promise: lazy execution, cancelable, typed errors, synchronous emission (no microtask queue).
- Designed with simplicity in mind, avoiding the complexity and misuse potential of RxJS Observables.
- Avoids mandatory microtasks, giving developers full control over execution order.
- Supports typed errors, enhancing error handling with type safety.
- Creation involves an optional teardown function for cleanup, e.g., clearing timeouts.
- Execution starts only upon subscription, unlike Promises which execute immediately.
- Cancelable: if unsubscribed before resolution, the teardown function is called.
- Once resolved or rejected, it caches the result for future subscribers.
- API mirrors Promise but uses pipes instead of chaining, with functions like `map`, `catchRejection`, and `finalize`.
- Utility functions `eager` and `lazy` convert between LazyPromise and Promise.
- Includes a third 'failure' channel for untyped errors, complementing the typed error handling.
- Designed to prevent silent failures; illegal operations throw errors.
- Can check if a LazyPromise settled synchronously via unsubscribe handle comparison.
- GitHub repository available for further exploration and usage.
Show HN: Tonbo – an embedded database for serverless and edge runtimes
4 months ago
- Tonbo is an embedded database for serverless and edge runtimes, storing data as Parquet on S3 with stateless compute.
- Key features include async-first design, no server management, Arrow-native data types, and compatibility with various runtimes like Tokio, WASM, and edge environments.
- Tonbo supports open formats like Parquet, enabling data to be read by any tool without vendor lock-in.
- Use cases include building serverless/edge apps needing durable state, storing append-heavy data in S3, and embedding a lightweight MVCC + Parquet storage engine.
- Provides Rust API for schema definition, data insertion, and querying with predicates, supporting local development and S3 storage.
- Implements a merge-tree optimized for object storage with MVCC for snapshot isolation and manifest-based coordination.
- Includes features like projection pushdown, composite keys, streaming, nested types, and time-travel queries.
- Currently in alpha, with ongoing development for storage, schema & query, backends, runtime, and integrations.
- Documentation includes user guides, API references, and RFCs for contributors.
- Licensed under Apache License 2.0.
Starlog Is Prolog with Nested Predicate Calls
4 months ago
- The Starlog Converter is a bidirectional translation tool between standard Prolog and Starlog syntax.
- Starlog uses a functional notation where the output parameter is represented using an 'is' operator.
- Special operators in Starlog include ':' for string concatenation, '&' for list append, and '•' for atom concatenation.
- The converter supports a wide range of built-in Prolog predicates, translating them into Starlog format.
- Examples include converting 'string_concat(A, B, C)' to 'C is (A : B)' and 'append(A, B, C)' to 'C is (A & B)'.
- The tool also performs reverse conversions, transforming Starlog code back to standard Prolog syntax.
- Commands are provided for running the converter in both directions using SWI-Prolog.
Show HN: CodinIT, local open-source Lovable alternative (Electron desktop app)
4 months ago
- CodinIT.dev is an open-source, AI-powered full-stack development platform for Node.js applications.
- It integrates code generation, project management, and deployment tools into a single workflow.
- Supports 19+ AI providers, both cloud and local, with no vendor lock-in.
- Quick start involves cloning the repository, installing dependencies, configuring environment, and running the dev server.
- Features include Docker-ready deployment, Supabase integration, data visualization, and voice prompting.
- Available as a web app, desktop app (Electron), and supports Docker for deployment.
- Can be used with various AI providers like OpenAI, Anthropic, Google, Groq, Ollama, and more.
Dronage Terminal: a terminal based drone workstation
4 months ago
- Dronage Terminal is a drone workstation featuring 4 clones of a famous open-source macro oscillator synth module.
- Available for macOS (Apple Silicon/Intel), Linux (x64/ARM64), and Windows (x64, experimental).
- Key features include extensive modulation capabilities, custom effects, and Euclidean rhythm patterns.
- Requires a modern terminal emulator (e.g., iTerm2, Alacritty, Rio) and a monospace Nerd Font for proper rendering.
- Audio playback is optimized for 48kHz, though other sample rates are supported with potential detuning or crackles.
- Includes 24 synthesis models from the famous oscillator module, each with unique parameters for Harm, Timbre, and Morph.
- Modulation options include 8 LFOs with various waveforms and a mod sequencer with 5 tracks.
- Effects include bipolar delay (normal/reverse), shimmer reverb, and a dirt processor with tape hiss/vinyl crackle.
- Presets are saved automatically in platform-specific locations and include all oscillator settings and modulation routings.
- Performance controls include a MACRO controller for real-time parameter morphing and scene management (8 scenes).
Open source USB to GPIB converter (for Test and Measurement instruments)
4 months ago
- New firmware version V2.2 released on 30th Nov 2025.
- User manual for UsbGPIB V2 added under Tutorials on 23rd Nov 2025.
- Pre-built GPIB-USB converters available via Elecrow for hassle-free setup.
- Project goals include USBTMC protocol support, small size, affordability, and compatibility with various test equipment.
- ATMEGA32U4 microcontroller chosen for 5V I/O support and internal 3.3V regulator.
- Two PCB revisions available: REV 1 with USB Type-B and REV 2 with USB Type-C.
- 3D printable housing designs provided for both revisions.
- Device only appears in device manager when GPIB device is connected.
- Supports standard USBTMC Test and measurement class for compatibility with VISA tools.
- Firmware allows configuration of read termination, auto ID query, and string length for VISA resource names.
Rusty-JVM – JVM Implemented in Rust
4 months ago
- A JVM implemented in Rust to run Java programs independently.
- Current version executes Java bytecode in interpreted mode; JIT compiler is a future milestone.
- Next objectives include garbage collection and multithreading support.
- Supports a wide range of Java features including opcodes, lambda expressions, arrays, exceptions, and more.
- Partially supports Dynamic Language Support, Stream API, Reflection, and some Java libraries.
- Requires JDK 25 (LTS) installed with JAVA_HOME environment variable set.
- Example provided to compile and run a Java program using rusty-jvm.
- Licensed under the MIT License.
Komodo: Build and deploy software to unlimited servers
4 months ago
- Tool for building and deploying software across multiple servers.
- Demo available with login credentials: demo/demo.
- Build server accessible with login: komodo/komodo.
- Komodo dragon mentioned as the largest lizard in the Monitor family.
- No limit on the number of servers or APIs for automation.
- No 'business edition'; fully open-source under GPL-V3 license.
- No warranties; users assume all risks.
Lsp-CLI: CLI language client for LSP language servers
4 months ago
- lsp-cli is a command-line interface (CLI) implementation of the Language Server Protocol (LSP).
- It allows language servers to be used outside of editors, enabling scripting and build pipeline integration.
- Primary use case is LTEX LS (LanguageTool language server), but most LSP-compatible servers should work.
- Features include printing diagnostics (linting), code actions, client configuration, and customization via JSON.
- Limitations: Client-side diagnostic requests are not supported by LSP; relies on server notifications.
- System requirements: 64-bit Linux, Mac, Windows, or any OS with Java 11+.
- Installation involves downloading platform-specific or platform-independent releases from GitHub.
- Startup scripts (bin/lsp-cli or bin\lsp-cli.bat) are recommended, with environment variables for Java settings.
- Command-line arguments include server configuration, working directory, verbosity, and file paths.
- Help messages and default values can be customized via a JSON file (.lsp-cli.json).
- Exit codes indicate success (0), exceptions (1), invalid arguments (2), or diagnostics found (3).
Learn Lisp/Fennel Programming Against Neovim
4 months ago
- Introduction to Neovim Plugin Development using Fennel, covering Lisp, FP, and advanced programming concepts.
- Exploration of new development paradigms in the AI era, emphasizing interactive development and functional programming.
- Comprehensive content on Fennel language syntax, Lisp thinking, and practical FP techniques.
- Guidance on Neovim plugin development from basics to advanced patterns and principles.
- Discussion on project-specific solutions like auto-conjure, WebSocket, and Tree-sitter integration.
- Insights into patterns and principles addressing bottlenecks, uncertainty, complexity, and tacit knowledge in development.
Redis vs. BoltCache
4 months ago
- BoltCache is a high-performance, Redis-compatible in-memory cache system built in Go.
- It offers a RESTful API alongside TCP protocol support for modern HTTP/JSON interfaces.
- Features include Pub/Sub messaging with WebSocket support, TTL for automatic key expiration, and thread-safe operations.
- Supports complex data types like strings, lists, sets, and hashes, with Lua scripting for custom operations.
- Includes security features like token-based authentication and rate limiting.
- Provides built-in monitoring, health checks, and YAML-based configuration management.
- Performance benchmarks show BoltCache outperforming Redis in operations per second and memory usage.
- Easy to deploy with Docker and Kubernetes, and supports clustering for high availability.
- Comes with a comprehensive RESTful API for cache operations, list, set, hash manipulations, and Pub/Sub messaging.
- Includes development tools like a web client, Postman collection, and cURL scripts for testing.
immer – a library of persistent and immutable data structures written in C++
4 months ago
- immer is a C++ library for persistent and immutable data structures.
- It enables simpler architectures for interactive and concurrent programs with high performance.
- Features include interactivity, concurrency, parallelism, idiomatic C++ usage, and high performance.
- The library is customizable and leverages C++14 features.
- Installation options include manual inclusion, Nix package manager, CMake, vcpkg, and build2.
- Development requires additional tools, easily installed via Nix, with CMake for project generation.
- Testing and benchmarking are supported, with results saved for analysis.
- Licensed under the Boost Software License 1.0.
X-ray: a Python library for finding bad redactions in PDF documents
4 months ago
- x-ray is a Python library for detecting improper redactions in PDF documents.
- Improper redactions often involve black rectangles or highlights over text, which can still be selected and read.
- The tool analyzes PDFs to identify such bad redactions and outputs JSON with details like page numbers, bounding boxes, and hidden text.
- x-ray can be installed via pip or uv and used via command line or as a Python module.
- It supports local files, URLs, and in-memory PDF bytes.
- Under the hood, x-ray uses PyMuPDF for PDF parsing and image-based rectangle inspection.
- The project is open-source (BSD license) and welcomes contributions, though a signed CLA is required.
- Releases are automated via GitHub Actions, triggered by version updates and tags.
Un-Redactor
4 months ago
- A PDF editing tool for forensics that allows writing over redaction boxes.
- Does not recover truly destroyed data but replaces redaction boxes with new information.
- Enables selecting exact dimensions of redaction boxes for replacement.
- Disclaimer: User assumes all legal liability for documents created with the tool.
- Warning: Republishing altered documents is illegal.
Micro QuickJS: a JavaScript engine for microcontroller
4 months ago
- MicroQuickJS (MQuickJS) is a JavaScript engine for embedded systems, requiring as low as 10 kB of RAM and about 100 kB of ROM.
- It supports a subset of JavaScript close to ES5, with a stricter mode that disables error-prone or inefficient constructs.
- MQuickJS uses a tracing garbage collector, stores strings in UTF-8, and avoids using the CPU stack for the VM.
- The REPL is called 'mqjs' and supports various options including memory limits, interactive mode, and bytecode output.
- Bytecode can be saved and run later, with format depending on CPU endianness and word length (32 or 64 bit).
- MQuickJS enforces strict mode, disallowing constructs like 'with', global variables without 'var', and array holes.
- Only global 'eval' is supported, and value boxing (e.g., 'new Number(1)') is not allowed.
- Arrays in MQuickJS cannot have holes, and out-of-bound sets are errors unless at the end of the array.
- The engine has minimal dependencies on the C library, using a provided memory buffer for allocations instead of 'malloc' or 'free'.
- The C API is similar to QuickJS but requires handling of moving objects due to the compacting garbage collector.
- MQuickJS includes its own tiny mathematical library and floating-point emulator for CPUs without FP support.
- Strings are stored in UTF-8, maintaining compatibility with JavaScript while optimizing for memory usage.
- The standard library resides in ROM, enabling fast instantiation with minimal RAM usage.
- MQuickJS is released under the MIT license, with sources primarily copyright Fabrice Bellard and Charlie Gordon.
Executorch: On-device AI across mobile, embedded and edge for PyTorch
4 months ago
- ExecuTorch is PyTorch's solution for deploying AI models on-device, supporting smartphones to microcontrollers.
- It enables deployment of LLMs, vision, speech, and multimodal models using familiar PyTorch APIs.
- Key features include native PyTorch export, a tiny runtime (50KB), and support for 12+ hardware backends.
- ExecuTorch uses ahead-of-time (AOT) compilation for model export, compilation, and execution.
- It supports various platforms including Android, iOS, Linux, Windows, macOS, and embedded systems.
- Includes tools for quantization, memory planning, and developer tools like ETDump profiler.
- Provides APIs for multiple languages including Python, C++, Java/Kotlin, and Swift.
- Supports advanced features like custom operators, dynamic shapes, and selective build for optimization.
- Community contributions are encouraged via GitHub, Discord, and issue reporting.
- ExecuTorch is BSD licensed and part of the PyTorch ecosystem.

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Bilingual

PipeWire Guide
4 months ago
- PipeWire is a multimedia server and API for handling audio and video pipelines with low latency.
- It supports PulseAudio, JACK, ALSA, and GStreamer applications, featuring a multiprocess architecture.
- Default in major Linux distributions like Fedora, Debian, Ubuntu, and openSUSE.
- Includes security features for containerized applications.
- Key tools: WirePlumber (session manager), EasyEffects (audio effects), Helvum (patchbay), qpwgraph (graph manager).
- Supports real-time audio/video processing and seamless integration with existing audio systems.
- Installation guides provided for Debian, Ubuntu, openSUSE, and Arch Linux.
- OBS Studio supports PipeWire for video recording and streaming.
- Wayland compatibility discussed, including tools like Weston, XWayland, and Sway.
- Creative Commons Attribution 4.0 license for the guide.
Show HN: Minimalist editor that lives in browser, stores everything in the URL
4 months ago
- A minimalist text editor that operates entirely in the browser and stores data in the URL hash.
- Features compression using deflate for text storage.
- Allows sharing notes via URLs, though they can be up to 500 characters long.
- Includes dark mode to respect user color scheme preferences.
- Auto-saves content with a 500ms debounce to prevent excessive saves.
- Mobile-friendly design for on-the-go usage.
- No backend required; operates without server support.
- Simple usage: open textarea.my, type, and observe URL changes.
- Supports custom page titles by starting the document with '# Title'.
- Advanced users can add styles via DevTools, which are saved in the URL.
Show HN: LoongArch Userspace Emulator
4 months ago
- High-performance LoongArch userspace emulator library for embedding and scripting applications.
- Built on libriscv architecture with competitive interpreter performance (~18k line codebase).
- Features include fast LoongArch interpreter with optional JIT, ultra-low latency call overheads (~4ns), and support for 64-bit LoongArch (LA64).
- Supports vector LSX and LASX instructions, with C++ API and Rust/Go bindings.
- Zero dependencies, execution timeout, memory safety, and first-class pause/resume support.
- Ideal for game engine scripting with significantly lower call overhead compared to traditional methods.
- CMake configuration options available for debug, binary translation, threaded bytecode dispatch, and memory settings.
- Example provided for loading and running a LoongArch ELF binary.
- Performance benchmarks show high memory rates and CoreMark scores, with JIT reaching up to 77% of native performance.
Show HN: Vibium – Browser automation for AI and humans, by Selenium's creator
4 months ago
- Vibium is a browser automation infrastructure designed for AI agents, test automation, and other browser-related tasks.
- It includes a single Go binary (~10MB) that handles browser lifecycle, WebDriver BiDi protocol, and exposes an MCP server.
- Vibium supports both synchronous and asynchronous APIs for browser control, including navigation, clicking elements, and taking screenshots.
- The tool automatically downloads and manages Chrome for Testing, eliminating manual setup.
- Vibium is compatible with multiple platforms (Linux, macOS, Windows) and architectures (x64, arm64).
- It integrates with Claude Code and other MCP clients, enabling AI agents to control browsers with minimal setup.
- Future roadmap includes Python and Java clients, AI-powered locators, video recording, and more.
- Vibium is open-source under the Apache 2.0 license.
Show HN: LazyPromise = Observable – Signals
4 months ago
- LazyPromise is a lazy, cancelable alternative to Promise with typed errors and synchronous emission.
- Key differences from Promise: lazy execution, cancelable, typed errors, synchronous emission (no microtask queue).
- Designed with simplicity in mind, avoiding the complexity and misuse potential of RxJS Observables.
- Avoids mandatory microtasks, giving developers full control over execution order.
- Supports typed errors, enhancing error handling with type safety.
- Creation involves an optional teardown function for cleanup, e.g., clearing timeouts.
- Execution starts only upon subscription, unlike Promises which execute immediately.
- Cancelable: if unsubscribed before resolution, the teardown function is called.
- Once resolved or rejected, it caches the result for future subscribers.
- API mirrors Promise but uses pipes instead of chaining, with functions like `map`, `catchRejection`, and `finalize`.
- Utility functions `eager` and `lazy` convert between LazyPromise and Promise.
- Includes a third 'failure' channel for untyped errors, complementing the typed error handling.
- Designed to prevent silent failures; illegal operations throw errors.
- Can check if a LazyPromise settled synchronously via unsubscribe handle comparison.
- GitHub repository available for further exploration and usage.
Show HN: Tonbo – an embedded database for serverless and edge runtimes
4 months ago
- Tonbo is an embedded database for serverless and edge runtimes, storing data as Parquet on S3 with stateless compute.
- Key features include async-first design, no server management, Arrow-native data types, and compatibility with various runtimes like Tokio, WASM, and edge environments.
- Tonbo supports open formats like Parquet, enabling data to be read by any tool without vendor lock-in.
- Use cases include building serverless/edge apps needing durable state, storing append-heavy data in S3, and embedding a lightweight MVCC + Parquet storage engine.
- Provides Rust API for schema definition, data insertion, and querying with predicates, supporting local development and S3 storage.
- Implements a merge-tree optimized for object storage with MVCC for snapshot isolation and manifest-based coordination.
- Includes features like projection pushdown, composite keys, streaming, nested types, and time-travel queries.
- Currently in alpha, with ongoing development for storage, schema & query, backends, runtime, and integrations.
- Documentation includes user guides, API references, and RFCs for contributors.
- Licensed under Apache License 2.0.
Starlog Is Prolog with Nested Predicate Calls
4 months ago
- The Starlog Converter is a bidirectional translation tool between standard Prolog and Starlog syntax.
- Starlog uses a functional notation where the output parameter is represented using an 'is' operator.
- Special operators in Starlog include ':' for string concatenation, '&' for list append, and '•' for atom concatenation.
- The converter supports a wide range of built-in Prolog predicates, translating them into Starlog format.
- Examples include converting 'string_concat(A, B, C)' to 'C is (A : B)' and 'append(A, B, C)' to 'C is (A & B)'.
- The tool also performs reverse conversions, transforming Starlog code back to standard Prolog syntax.
- Commands are provided for running the converter in both directions using SWI-Prolog.
Show HN: CodinIT, local open-source Lovable alternative (Electron desktop app)
4 months ago
- CodinIT.dev is an open-source, AI-powered full-stack development platform for Node.js applications.
- It integrates code generation, project management, and deployment tools into a single workflow.
- Supports 19+ AI providers, both cloud and local, with no vendor lock-in.
- Quick start involves cloning the repository, installing dependencies, configuring environment, and running the dev server.
- Features include Docker-ready deployment, Supabase integration, data visualization, and voice prompting.
- Available as a web app, desktop app (Electron), and supports Docker for deployment.
- Can be used with various AI providers like OpenAI, Anthropic, Google, Groq, Ollama, and more.
Dronage Terminal: a terminal based drone workstation
4 months ago
- Dronage Terminal is a drone workstation featuring 4 clones of a famous open-source macro oscillator synth module.
- Available for macOS (Apple Silicon/Intel), Linux (x64/ARM64), and Windows (x64, experimental).
- Key features include extensive modulation capabilities, custom effects, and Euclidean rhythm patterns.
- Requires a modern terminal emulator (e.g., iTerm2, Alacritty, Rio) and a monospace Nerd Font for proper rendering.
- Audio playback is optimized for 48kHz, though other sample rates are supported with potential detuning or crackles.
- Includes 24 synthesis models from the famous oscillator module, each with unique parameters for Harm, Timbre, and Morph.
- Modulation options include 8 LFOs with various waveforms and a mod sequencer with 5 tracks.
- Effects include bipolar delay (normal/reverse), shimmer reverb, and a dirt processor with tape hiss/vinyl crackle.
- Presets are saved automatically in platform-specific locations and include all oscillator settings and modulation routings.
- Performance controls include a MACRO controller for real-time parameter morphing and scene management (8 scenes).
Open source USB to GPIB converter (for Test and Measurement instruments)
4 months ago
- New firmware version V2.2 released on 30th Nov 2025.
- User manual for UsbGPIB V2 added under Tutorials on 23rd Nov 2025.
- Pre-built GPIB-USB converters available via Elecrow for hassle-free setup.
- Project goals include USBTMC protocol support, small size, affordability, and compatibility with various test equipment.
- ATMEGA32U4 microcontroller chosen for 5V I/O support and internal 3.3V regulator.
- Two PCB revisions available: REV 1 with USB Type-B and REV 2 with USB Type-C.
- 3D printable housing designs provided for both revisions.
- Device only appears in device manager when GPIB device is connected.
- Supports standard USBTMC Test and measurement class for compatibility with VISA tools.
- Firmware allows configuration of read termination, auto ID query, and string length for VISA resource names.
Rusty-JVM – JVM Implemented in Rust
4 months ago
- A JVM implemented in Rust to run Java programs independently.
- Current version executes Java bytecode in interpreted mode; JIT compiler is a future milestone.
- Next objectives include garbage collection and multithreading support.
- Supports a wide range of Java features including opcodes, lambda expressions, arrays, exceptions, and more.
- Partially supports Dynamic Language Support, Stream API, Reflection, and some Java libraries.
- Requires JDK 25 (LTS) installed with JAVA_HOME environment variable set.
- Example provided to compile and run a Java program using rusty-jvm.
- Licensed under the MIT License.
Komodo: Build and deploy software to unlimited servers
4 months ago
- Tool for building and deploying software across multiple servers.
- Demo available with login credentials: demo/demo.
- Build server accessible with login: komodo/komodo.
- Komodo dragon mentioned as the largest lizard in the Monitor family.
- No limit on the number of servers or APIs for automation.
- No 'business edition'; fully open-source under GPL-V3 license.
- No warranties; users assume all risks.
Lsp-CLI: CLI language client for LSP language servers
4 months ago
- lsp-cli is a command-line interface (CLI) implementation of the Language Server Protocol (LSP).
- It allows language servers to be used outside of editors, enabling scripting and build pipeline integration.
- Primary use case is LTEX LS (LanguageTool language server), but most LSP-compatible servers should work.
- Features include printing diagnostics (linting), code actions, client configuration, and customization via JSON.
- Limitations: Client-side diagnostic requests are not supported by LSP; relies on server notifications.
- System requirements: 64-bit Linux, Mac, Windows, or any OS with Java 11+.
- Installation involves downloading platform-specific or platform-independent releases from GitHub.
- Startup scripts (bin/lsp-cli or bin\lsp-cli.bat) are recommended, with environment variables for Java settings.
- Command-line arguments include server configuration, working directory, verbosity, and file paths.
- Help messages and default values can be customized via a JSON file (.lsp-cli.json).
- Exit codes indicate success (0), exceptions (1), invalid arguments (2), or diagnostics found (3).
Learn Lisp/Fennel Programming Against Neovim
4 months ago
- Introduction to Neovim Plugin Development using Fennel, covering Lisp, FP, and advanced programming concepts.
- Exploration of new development paradigms in the AI era, emphasizing interactive development and functional programming.
- Comprehensive content on Fennel language syntax, Lisp thinking, and practical FP techniques.
- Guidance on Neovim plugin development from basics to advanced patterns and principles.
- Discussion on project-specific solutions like auto-conjure, WebSocket, and Tree-sitter integration.
- Insights into patterns and principles addressing bottlenecks, uncertainty, complexity, and tacit knowledge in development.
Redis vs. BoltCache
4 months ago
- BoltCache is a high-performance, Redis-compatible in-memory cache system built in Go.
- It offers a RESTful API alongside TCP protocol support for modern HTTP/JSON interfaces.
- Features include Pub/Sub messaging with WebSocket support, TTL for automatic key expiration, and thread-safe operations.
- Supports complex data types like strings, lists, sets, and hashes, with Lua scripting for custom operations.
- Includes security features like token-based authentication and rate limiting.
- Provides built-in monitoring, health checks, and YAML-based configuration management.
- Performance benchmarks show BoltCache outperforming Redis in operations per second and memory usage.
- Easy to deploy with Docker and Kubernetes, and supports clustering for high availability.
- Comes with a comprehensive RESTful API for cache operations, list, set, hash manipulations, and Pub/Sub messaging.
- Includes development tools like a web client, Postman collection, and cURL scripts for testing.
immer – a library of persistent and immutable data structures written in C++
4 months ago
- immer is a C++ library for persistent and immutable data structures.
- It enables simpler architectures for interactive and concurrent programs with high performance.
- Features include interactivity, concurrency, parallelism, idiomatic C++ usage, and high performance.
- The library is customizable and leverages C++14 features.
- Installation options include manual inclusion, Nix package manager, CMake, vcpkg, and build2.
- Development requires additional tools, easily installed via Nix, with CMake for project generation.
- Testing and benchmarking are supported, with results saved for analysis.
- Licensed under the Boost Software License 1.0.
X-ray: a Python library for finding bad redactions in PDF documents
4 months ago
- x-ray is a Python library for detecting improper redactions in PDF documents.
- Improper redactions often involve black rectangles or highlights over text, which can still be selected and read.
- The tool analyzes PDFs to identify such bad redactions and outputs JSON with details like page numbers, bounding boxes, and hidden text.
- x-ray can be installed via pip or uv and used via command line or as a Python module.
- It supports local files, URLs, and in-memory PDF bytes.
- Under the hood, x-ray uses PyMuPDF for PDF parsing and image-based rectangle inspection.
- The project is open-source (BSD license) and welcomes contributions, though a signed CLA is required.
- Releases are automated via GitHub Actions, triggered by version updates and tags.
Un-Redactor
4 months ago
- A PDF editing tool for forensics that allows writing over redaction boxes.
- Does not recover truly destroyed data but replaces redaction boxes with new information.
- Enables selecting exact dimensions of redaction boxes for replacement.
- Disclaimer: User assumes all legal liability for documents created with the tool.
- Warning: Republishing altered documents is illegal.
Micro QuickJS: a JavaScript engine for microcontroller
4 months ago
- MicroQuickJS (MQuickJS) is a JavaScript engine for embedded systems, requiring as low as 10 kB of RAM and about 100 kB of ROM.
- It supports a subset of JavaScript close to ES5, with a stricter mode that disables error-prone or inefficient constructs.
- MQuickJS uses a tracing garbage collector, stores strings in UTF-8, and avoids using the CPU stack for the VM.
- The REPL is called 'mqjs' and supports various options including memory limits, interactive mode, and bytecode output.
- Bytecode can be saved and run later, with format depending on CPU endianness and word length (32 or 64 bit).
- MQuickJS enforces strict mode, disallowing constructs like 'with', global variables without 'var', and array holes.
- Only global 'eval' is supported, and value boxing (e.g., 'new Number(1)') is not allowed.
- Arrays in MQuickJS cannot have holes, and out-of-bound sets are errors unless at the end of the array.
- The engine has minimal dependencies on the C library, using a provided memory buffer for allocations instead of 'malloc' or 'free'.
- The C API is similar to QuickJS but requires handling of moving objects due to the compacting garbage collector.
- MQuickJS includes its own tiny mathematical library and floating-point emulator for CPUs without FP support.
- Strings are stored in UTF-8, maintaining compatibility with JavaScript while optimizing for memory usage.
- The standard library resides in ROM, enabling fast instantiation with minimal RAM usage.
- MQuickJS is released under the MIT license, with sources primarily copyright Fabrice Bellard and Charlie Gordon.
Executorch: On-device AI across mobile, embedded and edge for PyTorch
4 months ago
- ExecuTorch is PyTorch's solution for deploying AI models on-device, supporting smartphones to microcontrollers.
- It enables deployment of LLMs, vision, speech, and multimodal models using familiar PyTorch APIs.
- Key features include native PyTorch export, a tiny runtime (50KB), and support for 12+ hardware backends.
- ExecuTorch uses ahead-of-time (AOT) compilation for model export, compilation, and execution.
- It supports various platforms including Android, iOS, Linux, Windows, macOS, and embedded systems.
- Includes tools for quantization, memory planning, and developer tools like ETDump profiler.
- Provides APIs for multiple languages including Python, C++, Java/Kotlin, and Swift.
- Supports advanced features like custom operators, dynamic shapes, and selective build for optimization.
- Community contributions are encouraged via GitHub, Discord, and issue reporting.
- ExecuTorch is BSD licensed and part of the PyTorch ecosystem.

Hasty Briefsbeta

PipeWire Guide

Show HN: Minimalist editor that lives in browser, stores everything in the URL

Show HN: LoongArch Userspace Emulator

Show HN: Vibium – Browser automation for AI and humans, by Selenium's creator

Show HN: LazyPromise = Observable – Signals

Show HN: Tonbo – an embedded database for serverless and edge runtimes

Starlog Is Prolog with Nested Predicate Calls

Show HN: CodinIT, local open-source Lovable alternative (Electron desktop app)

Dronage Terminal: a terminal based drone workstation

Open source USB to GPIB converter (for Test and Measurement instruments)

Rusty-JVM – JVM Implemented in Rust

Komodo: Build and deploy software to unlimited servers

Lsp-CLI: CLI language client for LSP language servers

Learn Lisp/Fennel Programming Against Neovim

Redis vs. BoltCache

immer – a library of persistent and immutable data structures written in C++

X-ray: a Python library for finding bad redactions in PDF documents

Un-Redactor

Micro QuickJS: a JavaScript engine for microcontroller

Executorch: On-device AI across mobile, embedded and edge for PyTorch

PipeWire Guide

Show HN: Minimalist editor that lives in browser, stores everything in the URL

Show HN: LoongArch Userspace Emulator

Show HN: Vibium – Browser automation for AI and humans, by Selenium's creator

Show HN: LazyPromise = Observable – Signals

Show HN: Tonbo – an embedded database for serverless and edge runtimes

Starlog Is Prolog with Nested Predicate Calls

Show HN: CodinIT, local open-source Lovable alternative (Electron desktop app)

Dronage Terminal: a terminal based drone workstation

Open source USB to GPIB converter (for Test and Measurement instruments)

Rusty-JVM – JVM Implemented in Rust

Komodo: Build and deploy software to unlimited servers

Lsp-CLI: CLI language client for LSP language servers

Learn Lisp/Fennel Programming Against Neovim

Redis vs. BoltCache

immer – a library of persistent and immutable data structures written in C++

X-ray: a Python library for finding bad redactions in PDF documents

Un-Redactor

Micro QuickJS: a JavaScript engine for microcontroller

Executorch: On-device AI across mobile, embedded and edge for PyTorch