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An interactive intro to CRDTs. #article#js @thedevs https://thedevs.link/t9Rg2I

The optional chaining operator, “modern” browsers, and my mom. #article#js @thedevs https://kutt.it/U5Q49j

How we built the GitHub globe. #article#js @thedevs https://kutt.it/cBurik

Introducing Yarn 2. #article#js @thedevs https://kutt.it/brcXkt

Why is modern web development so complicated? A long yet hasty explanation. #article#js @thedevs https://kutt.it/uqd6tH

What's new in JavaScript for 2019. #article#js @thedevs https://kutt.it/bKySnU

Fear, trust and JavaScript: When types and functional programming fail. #article#js @thedevs https://kutt.it/6L10uj

The 12 things you need to consider when evaluating any new JavaScript library, #article#js @thedevs https://kutt.it/tLEoC2

10 things you will eventually learn about JavaScript projects. #article#js @thedevs https://kutt.it/Rxh7xG

The cost of JavaScript in 2018. #article#js @thedevs https://kutt.it/H3Jwrv

Marriage Describing life without marriage is not possible. At the right age, we do marriages if you don't want to marry people judge you differently, human is social animals. We need each other's help, this help may be for physical satisfaction or following culture and rules by the family. As you know two types of marriages happen all around the world first one is love marriage or 2 arrange marriage. I don't need to tell you about both you are aware of those things even in simple lines I would like to describe it. 1. Love marriage Love happens in school or colleges where we see new, new faces and characters. That attracts us their style of talking, face, spot or writing bla. bla... We can not fall in love exactly by one accident we fall in love by our habits and wishes match to each other and when we help each other. Many authors have described love in many forms. Love is always standing separately from any other subjects. Don't waste your life in love. You will get many people to tell you like this but what is there without love. Love gives you happiness and sadness, joy and gloom, daring and fear, respect and disesteem, victor and failure. Someone has said everything is possible in love and war. You can lose your mind and become crazy. I have not fallen in love yet it's my weakness and strength. I don't want to marry and fall in love. Because I'm not able to handle them they used to talk very silly. They are not crazy, they made to make us crazy. 2. Arrange Marriage. Doing arrangement means preparation. It goes with rules and customs if you are old-fashioned or believe in that custom you go through every single step. But nobody is following those rules. We can't stop ourselves to be quiet until the marriage ceremony. We talk on call after the first meeting And take two-three times kisses after fixed marriage we want a separate place to talk. Here everything is under the control of your elders. You know this life is not goes all the time as you think. Enjoy every aspect of life that is life. Either love marriage or arrange marriage. #review#article#marriage

#GitHub#Apple#Article 🔑和 AirTag 相关的几个折腾和原理 ☝️ AirTag 这个产品当年发布还是在果粉圈引起了不小的轰动，但时隔多年，AirTag 本身也没有推出第二代产品，并且价格也居高不小（相比同类防丢器产品），虽然拼多多上也有华强北的平替产品，但是仍需要苹果设备才能绑定，才能查看位置。不支持安卓/鸿蒙/PC，也不支持集成到 Home Assistant 中。这时候有些「动手能力强」的朋友就蠢蠢欲动了。 ⚠️ 今天看到关于 AirTag 的几个折腾，由于对「动手能力」要求很高，所以还是从这个事情本身的原理来窥探一下。摊主本人本人并不建议大家自己动手制作，以免产生不必要的麻烦（小心收律师函）。 🔋AirTag 的原理 ▶蓝牙信号广播：AirTag 持续发射低功耗 蓝牙信号（BLE），信号中携带唯一加密标识符。此信号可被附近（约 30-100 米内）的苹果设备（iPhone、iPad、Mac 等）检测到。 ▶FindMy 网络协作定位：当苹果设备接收到 AirTag 的蓝牙信号后，会通过匿名加密机制，将设备自身的 GPS 位置 和 信号接收时间 上传至苹果服务器。所有苹果设备共同构成 Find My 去中心化网络，通过群体协作实现定位。 ▶精确定位技术：若用户持有支持 U1 超宽频芯片（UWB） 的 iPhone（如 iPhone 11 及以上机型），可在近距离（约 10 米内）通过 AR 界面实现厘米级精度的指向性定位（如显示距离和方向）。 ♻️逆向工程方案的实现机制 通过 GitHub 开源项目 OpenHaystack，可模拟 AirTag 的加密蓝牙广播协议，使第三方设备（如 ESP32）伪装成 Find My 网络节点。设备定期广播特定格式的 BLE 数据包，由周围苹果设备被动接收并上传位置。 这样做对于非 Apple 产品用户和使用 Home Assistant 的用户而言，可以实现数据查看。利用插件将设备位置同步至智能家居系统，实现自动化联动（如宠物离家触发警报）。 还有一个比 Apple 更牛的功能是支持查看历史 n 天的 AirTag 活动轨迹，我理解其实 Apple 也可以做这个功能，但是目前并没有。 ⛄️方案致命缺点 由于是非官方方案，可能因苹果协议更新失效，且存在隐私泄露隐患。 📚相关材料 ▶[V2EX] 自制 AirTag，支持安卓/鸿蒙/PC/Home Assistant，无需拥有 iPhone ▶[GitHub] Macless-Haystack 👮‍♂️本文只作为相关原理和事物的观察分享，不提倡大家实践，请遵守当地法律法规！