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Understanding Deflate

news.ycombinator.com Unknown 2025-09-22 02:12:40

Understanding Deflate I’m trying to understand how Deflate works so decided to compress a simple string TOBEORNOTTOBEORTOBEORNOT using GZIP then decode the resulting file by hand. Compressing the data Pretty simple here, text in bytes out: $ echo -n 'TOBEORNOTTOBEORTOBEORNOT' | gzip -n | xxd -ps -u 1F8B08000000000000030BF17772F50FF2F30F09013342605C00F14E3D2D 18000000 Reading the GZIP data Even though I’m really interested in the compressed data I have to decode the GZIP “wrapper” in order

Topics: code data distance literal symbol
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Apple's history is hiding in a Mac font

news.ycombinator.com Unknown 2025-11-28 14:31:54

Rome wasn't built in a day, and the same is true of desktop operating systems. The modern versions of Windows, macOS, and Linux we know and (sometimes) love today represent decades of iteration and overhauls, but much of that legacy is invisible. New design languages and interfaces show up every few years, and in the process, old applications and designs are covered up or replaced. It doesn't take long to find legacy holdovers in today's Windows 11—for example, that Windows 3.1-era file picker

Topics: apple font icons mac symbols
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For regulated industries, AWS’s neurosymbolic AI promises safe, explainable agent automation

venturebeat.com Emilia David 2025-12-08 02:05:50

Want smarter insights in your inbox? Sign up for our weekly newsletters to get only what matters to enterprise AI, data, and security leaders. Subscribe Now AWS is banking on the fact that by bringing its Automated Reasoning Checks feature on Bedrock to general availability, it will give more enterprises and regulated industries the confidence to use and deploy more AI applications and agents. It is also hoping that introducing methods like automated reasoning, which utilizes math-based valida

Topics: ai automated checks neurosymbolic reasoning
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Show HN: Mathpad – Physical keypad for typing math symbols

news.ycombinator.com Unknown 2025-12-11 08:43:07

Back this project to help bring it into existence. Funding ends on Sep 11, 2025 at 04:59 PM PDT. Mathpad is a specialized keypad that makes typing mathematical equations as simple as typing regular text. With over 100 mathematical symbols at your fingertips, this compact and powerful device eliminates the frustration and inefficiency of typing math on a computer. What if Mathematical Symbols Were as Easy to Type as Regular Letters? After 3 years of development, Mathpad finally makes this drea

Topics: equation mathpad symbols type windows
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Show HN: Mathpad – Physical keypad for typing 100+ math symbols anywhere

news.ycombinator.com Unknown 2025-12-11 20:43:07

Back this project to help bring it into existence. Funding ends on Sep 11, 2025 at 04:59 PM PDT. Mathpad is a specialized keypad that makes typing mathematical equations as simple as typing regular text. With over 100 mathematical symbols at your fingertips, this compact and powerful device eliminates the frustration and inefficiency of typing math on a computer. What if Mathematical Symbols Were as Easy to Type as Regular Letters? After 3 years of development, Mathpad finally makes this drea

Topics: equation mathpad symbols type windows
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QRS: Epsilon Wrangling

news.ycombinator.com Tim Bray 2026-01-31 00:45:19

I haven’t shipped any new features for Quamina in many months, partly due to a flow of real-life distractions, but also I’m up against tough performance problems in implementing Regular Expressions at massive scale. I’m still looking for a breakthrough, but have learned things about building and executing finite automata that I think are worth sharing. This piece has to do with epsilons; anyone who has studied finite automata will know about them already, but I’ll offer background for those peop

Topics: closure input nfa state symbol
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SymbolicAI: A neuro-symbolic perspective on LLMs

news.ycombinator.com Unknown 2026-02-21 18:49:57

SymbolicAI: A neuro-symbolic perspective on LLMs What is SymbolicAI? SymbolicAI is a neuro-symbolic framework, combining classical Python programming with the differentiable, programmable nature of LLMs in a way that actually feels natural in Python. It's built to not stand in the way of your ambitions. It's easily extensible and customizable to your needs by virtue of its modular design. It's quite easy to write your own engine, host locally an engine of your choice, or interface with tools l

Topics: config configuration install symai symbolicai
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Bzip2 crate switches from C to 100% Rust

news.ycombinator.com Unknown 2026-03-14 04:06:54

Today we published bzip2 version 0.6.0 , which uses our rust implementation of the bzip2 algorithm, libbz2-rs-sys , by default. The bzip2 crate is now faster and easier to cross-compile. The libbz2-rs-sys crate can also be built as a C dynamic library, if you have a C project that would benefit from these improvements. Why though? Why bother working on this algorithm from the 90s that sees very little use today? The thing is that many protocols and libraries still need to support bzip2 to be

Topics: bzip2 crate level rust symbols
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Bzip2 crate switches from C to 100% rust

news.ycombinator.com Unknown 2026-03-14 09:06:54

Today we published bzip2 version 0.6.0 , which uses our rust implementation of the bzip2 algorithm, libbz2-rs-sys , by default. The bzip2 crate is now faster and easier to cross-compile. The libbz2-rs-sys crate can also be built as a C dynamic library, if you have a C project that would benefit from these improvements. Why though? Why bother working on this algorithm from the 90s that sees very little use today? The thing is that many protocols and libraries still need to support bzip2 to be

Topics: bzip2 crate level rust symbols
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Apple releases SF Symbols 7 beta with new animations, variable draw, gradients, more

9to5mac.com Marcus Mendes 2026-03-22 23:09:33

Alongside new design materials and resources for iOS 26, iPadOS 26, and macOS Tahoe 26, Apple has also released the beta version of SF Symbols 7, a major update to its system iconography toolkit. The update includes hundreds of new icons, alongside new animation tools and transitions. Here’s everything new. This year’s update brings a series of meaningful enhancements, including brand-new Draw animations, improved Magic Replace transitions, variable rendering support, and automatic gradients. A

Topics: 26 apple draw new symbols
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SVDQuant+NVFP4: 4× Smaller, 3× Faster FLUX with 16-bit Quality on Blackwell GPUs

news.ycombinator.com Muyang Li 2025-11-17 10:46:18

SVDQuant supports NVFP4 on NVIDIA Blackwell GPUs with 3× speedup over BF16 and better image quality than INT4. Try our interactive demo below or at https://svdquant.mit.edu/! Our code is all available at https://github.com/mit-han-lab/nunchaku. With Moore's law slowing down, hardware vendors are shifting toward low-precision inference. NVIDIA's latest Blackwell architecture introduces a new 4-bit floating point format (NVFP4), improving upon the previous MXFP4 format. NVFP4 features more precis

Topics: boldsymbol image int4 nvfp4 svdquant
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