How to create an XML sitemap from a URL list

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An XML sitemap is a list of public URLs that you want search engines to discover. It can help with discovery, but it does not guarantee crawling, indexing or rankings. If your site uses a CMS, check whether it already generates a sitemap. WordPress, Wix and other platforms can maintain one as pages are added or removed. Use that sitemap rather than creating a second file that will go stale.

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Stops Along the Path of Totality

皆既日食2026までに立体視を鍛える——Unity/XR開発者視点で見るAmblyoPunchの分離視VRアプローチ NASAが2026年8月12日の皆既日食パス（西アイスランド・スペイン北部）を公開しました。天体観測において「立体視（stereopsis）」がどれほど体験を豊かにするか——コロナの3次元構造、ダイヤモンドリングの奥行き——は、両眼視機能が正常な開発者なら直感的に理解できるはず。一方で、弱視（amblyopia）や両眼視機能障害（binocular vision dysfunction）を持つユーザーにとって、こうした立体現象は平面的にしか知覚できません。 AmblyoPunchは、Meta Quest（Meta XR SDK / Unity）で構築されたVRビジョントレーニングタイトルです。Seven Sportzによって開発され、弱視のための視覚スキル練習をインタラクティブなゲームプレイと構造化された分離視（dichoptic）トレーニングで提供します。タグラインは「Train Your Brain. Strengthen Your Vision. Beyond the Patch.」（脳を鍛え、視力を強化。アイパッチを超えて）。ガボールパターン刺激をゲームオブジェクト（コイン）として実装コインにはガボールパッチ刺激——視覚野でコントラスト、配向、微細ディテ

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ProgrammingDEV Community ·

oss buddy: a local gemma that picks weekend-sized issues so my cousin can finally land his first PR

This is a submission for the Hacktoberfest Weekend Challenge: Build for a Friend I have a cousin. He has been telling me he wants to contribute to open source for about a year. Every month or two he sends me a screenshot of a repo and asks "is this a good one to start with?" I say yes. He opens it, scrolls for twenty minutes, closes the tab. The screenshot never turns into a PR.

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ProgrammingDEV Community ·

Prop Drilling in React

In React, props are used to pass data from a parent component to a child component. Props are an important part of React because they allow components to share information. However, when data needs to travel through many levels of components, it can lead to a situation called Prop Drilling. Prop drilling means passing data from a parent component to a deeply nested child component through intermediate components, even when those intermediate components do not need the data. For example, imagine the component structure: App ↓ Parent ↓ Child ↓ GrandChild Suppose the App component has a username

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ProgrammingDEV Community ·

Git 3.0's SHA-256 default is a costly mistake, says Chacon

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