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🌍 Dev.to

I hand-scoped 2,768 CSS demos. Here's the convention that made it survivable.

You paste a snippet from a tutorial. Half your app's buttons change color. The snippet had .btn in it, and so does your codebase. Nothing logged the collision — CSS resolves duplicates silently, by source order, and whichever selector loaded last just won. Every dev who's copy-pasted CSS has hit some version of this. It's the most common way styles regress in a codebase and the least often called out. I ship 2,768 CSS demos across 138 collections on codefronts.com , all hand-written. Ev...
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Your model benchmark measures everything except the bill

Every model benchmark I read ranks the same two things: how good the output was, and sometimes how many tokens it took. Almost none of them print the number you actually get charged for. That gap matters, because the two rankings are not the same list. A model can win on quality, lose on tokens, and still be the cheapest way to finish your task — or the opposite. You cannot tell which without doing the multiplication yourself. Here is the multiplication. The formula co...
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🌍 Dev.to

The report says verified. Is the change safe to release?

How to keep table identity, evidence coverage, and release intent separate in a data investigation report. A schema-change report contains four lines: Previous state: Delta version 41 Current state: Delta version 42 Schema changes: Verified Fields added: 1 The feature request expected one new nullable double field named score . Can version 42 go to production? Not from those four lines. The report established an observed change between two table states. It did no...
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🌍 Dev.to

Why Comments Should Explain the Reason, Not Repeat the Decision

A code comment is useful when it adds context that cannot be understood from the code alone. Simply repeating what the code does creates noise without helping the next person make a change safely. The most valuable comments explain why a particular decision was made. The Code Already Shows What Happens A comment such as // retry the request three times adds little value when the code clearly contains a loop with three attempts. It duplicates information that can become outdated...
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🌍 Dev.to

Beyond Vector Search: Building Better RAG Retrieval with Hybrid Search and Reranking

The first two parts of this series covered why production RAG systems fail and how the quality of the data foundation directly affects everything that comes after it. We looked at document ingestion, parsing, chunking, and metadata design—the layers responsible for turning raw information into something a retrieval system can actually work with. But even perfectly processed documents are useless if retrieval cannot find the right information. In this third part, we'll move into the retriev...
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🌍 Dev.to

Building a RAG System From Scratch — Four Components, One Working Pipeline

Most RAG tutorials explain the concept. This one shows the code — a complete working pipeline using LangChain, ChromaDB, and a local LLM via LM Studio. No OpenAI API key. No cloud costs. The business problem: A company has hundreds of pages of HR documentation. Employees ask questions. An AI answers accurately from the actual documents in seconds. Stack: Python, LangChain, ChromaDB, nomic-embed-text, Qwen 9B via LM Studio pip install langchain langchain-community langchain-ch...
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🌍 Dev.to

I Built Five npm Packages to Solve the Five Problems Every Next.js Backend Ignores

A production-grade toolkit for Next.js backends, and the architectural thinking behind it. After years of building internal tools and SaaS products with Next.js, I kept copying the same five things across every project. Not because they were hard to write, but because no one had packaged them together in a way that was coherent, composable, and genuinely production-ready. So I built nx-safe-suite : a monorepo of five independently installable TypeScript packages that handle the found...
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HackerNews

Dutch Train Map Simulator

Article URL: https://spoorkaart.zaza.dev Comments URL: https://news.ycombinator.com/item?id=49269641 Points: 57 # Comments: 37
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HackerNews

What sort of maths are LLMs good at?

Article URL: https://gowers.wordpress.com/2026/08/12/what-sort-of-maths-are-llms-good-at/ Comments URL: https://news.ycombinator.com/item?id=49270022 Points: 86 # Comments: 21
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HackerNews

Show HN: Woxi - Open-source Mathematica / Wolfram Language reimplementation

Woxi is an interpreter for the Wolfram Language written in Rust. It comes with Woxi Studio, a Mathematica-like GUI built with iced, but you can also use Woxi through a CLI, Jupyter kernel, Python package, npm package, or WASM module. Compared with wolframscript / Mathematica, the main differences are: - Free and open source - Very fast startup - Typically milliseconds rather than seconds for the Wolfram kernel, making Woxi practical for shell scripts, one-liners, and other short-lived processes ...
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HackerNews

The Human Is the Loop

Article URL: https://brentfitzgerald.com/posts/the-human-is-the-loop/ Comments URL: https://news.ycombinator.com/item?id=49267108 Points: 81 # Comments: 29
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HackerNews

Dropbox is an obvious PE Target?

Article URL: https://s-1.vercel.app/posts/why-dropbox-is-a-obvious-pe-target/ Comments URL: https://news.ycombinator.com/item?id=49267818 Points: 44 # Comments: 62
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