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Show HN: wcwidth-o1 – Find Unicode text cell width in no time for JavaScript/TS

news.ycombinator.com Unknown 2025-09-24 23:53:43

A TypeScript/JavaScript port of Markus Kuhn’s wcwidth and wcswidth implementations, optimized to O(1). These functions are defined in IEEE Std 1003.1 (POSIX). Superior Performance ⚡️ Instant O(1) lookup time 🌏 Full Unicode 15.1 coverage Getting Started Install Wcwidth-O1 via npm: npm i wcwidth-o1 Usage JavaScript / TypeScript: import wcwidth from 'wcwidth-o1' ; const example1 = wcwidth ( 'a' ) ; // 1 const example2 = wcwidth ( '好' ) ; // 2 const example3 = wcwidth ( '😊' ) ; // 2 or i

Topics: column const wcswidth wcwidth width
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Das Problem mit German Strings

news.ycombinator.com Unknown 2025-10-24 09:59:35

German strings are everywhere I look. The impression I’ve gotten from working in the Rust Arrow/Datafusion ecosystem and related file formats for the last couple of months is that StringViews (the implementation of German strings in Arrow) are becoming, if they have not already, the canonical form of representing string columns at execution time. This is generally a good idea. German strings are a fantastic innovation rooted in simplicity that greatly improves most string processing use-cases i

Topics: buffer columns encoding string strings
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Show HN: Typed-arrow – compile‑time Arrow schemas for Rust

news.ycombinator.com Unknown 2025-11-01 17:34:36

typed-arrow provides a strongly typed, fully compile-time way to declare Arrow schemas in Rust. It maps Rust types directly to arrow-rs typed builders/arrays and arrow_schema::DataType — without any runtime DataType switching — enabling zero runtime cost, monomorphized column construction and ergonomic ORM-like APIs. Why compile-time Arrow? Performance: monomorphized builders/arrays with zero dynamic dispatch; avoids runtime DataType matching. matching. Safety: column types, names, and nullab

Topics: arrow column list nullable option
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Apache Iceberg V3 Spec new features for more efficient and flexible data lakes

news.ycombinator.com Unknown 2025-11-22 17:07:34

A Deeper Dive into Apache Iceberg V3: How New Designs Are Solving Core Data Lake Challenges The Next Chapter for Apache Iceberg: Welcoming the Iceberg V3 Spec by Talat Uyarer , BigQuery Managed Iceberg & Shane Glass , Google Open Source Programs Office The data community has long grappled with the challenge of how to bring database-like agility to petabyte-scale datasets stored in open cloud storage. The trade-off has often been between the scalability of data lakes and the performance and ea

Topics: column data iceberg row v3
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Android Auto may soon let you spend less time scrolling, more time driving (APK teardown)

androidauthority.com Unknown 2025-11-24 02:00:30

Andy Walker / Android Authority TL;DR Your in-car Android Auto screen could soon display more app columns, making app discovery easier and faster. We were able to surface up to seven app columns in a layout that previously supported a maximum of five columns. The number of app columns you see on your Android Auto screen will depend on the size of your in-car display. Android Auto’s app drawer can sometimes seem a bit cramped. Depending on your car’s display size, you’ll typically see four or

Topics: android app auto columns drawer
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Solving LinkedIn Queens Using Haskell

news.ycombinator.com Agnishom Chattopadhyay 2026-02-24 15:29:08

June 24, 2025 · Agnishom Chattopadhyay [Thanks to James Haydon for his suggestions on improving the post and the code quality] On LinkedIn, you can play a variant of the N-Queens problem. A community version of the game (rather, puzzle) can be found here. Recently, we saw it solved using SAT solvers, using SMT Solvers, using APL and MiniZinc. Today, I will try solving it using Haskell, a slightly more conventional language. The Puzzle You are given a N-colored square-shaped board of size N.

Topics: column partial problem row set
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