# 100. Carefree Children

> I saw a group of children playing carefree on a small road in Hunan—one was even rolling around on the ground in pure joy. it’s 100 issues of the Weekly now, and I hope you’re just as happy!

- Issue: 100
- Published: 2022/10/17
- HTML: https://weekly.tw93.fun/en/posts/100
- JSON: https://weekly.tw93.fun/api/en/posts/100.json
- Chinese original: https://weekly.tw93.fun/posts/100.md

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<img src="https://gw.alipayobjects.com/zos/k/vf/100.jpg" width=900/>

<small>I saw a group of children playing carefree on a small road in Hunan—one was even rolling around on the ground in pure joy. it’s 100 issues of the Weekly now, and I hope you’re just as happy!</small>

> **Record the down-to-earth trending technologies seen every week, and publish them here after screening. If you find it good, you can follow this weekly to get update notifications.**

## Technical Related

**Introduction to WebRTC**  
<https://juejin.cn/post/7151932832041058340>  
A solid primer on the basics of WebRTC, including some simple demos to help you get started with real-time communication on the web.

**Deep Dive into Recoil State Management**  
<https://mp.weixin.qq.com/s/hwTdALHFbMHPRzJEYqvaVA>  
Recoil is Facebook’s state management library specifically for React. it represents a major trend in how we handle complex data needs in modern frontend applications. here’s a look at why its concepts are so advanced.

**The Fastest Way to Check if an Item Exists in a JS Array**  
<https://medium.com/@tiagobertolo/which-is-the-fastest-way-to-find-if-something-exists-in-an-array-in-javascript-49ab24051efb>  
A performance comparison of different array search methods in JavaScript. useful for when you need to squeeze out every bit of optimization from your loops.

**11 Amazing New JavaScript Features in ES13**  
<https://javascript.plainenglish.io/es13-javascript-features-eed7ed2f1497>  
JavaScript is evolving faster than ever. here’s a look at the latest features that arrived with ES13.

## Trending Open Source

**Pake: Bundle any Webpage into a Mac App with Rust**  
<https://github.com/tw93/Pake>  
I’ve open-sourced the tool I used to bundle the WeChat Reading Mac app. it’s built on Tauri and makes it incredibly easy to turn your favorite websites into standalone desktop applications.  
<img src="https://cdn.tw93.fun/blog/upic/9Y3lrP.jpg" width="800"/>

**duf: A Better 'df' Replacement**  
<https://github.com/muesli/duf>  
A modern, colorful, and more intuitive command-line tool for checking disk usage.  
<img src="https://cdn.tw93.fun/blog/upic/eR6Xnp.jpg" width="800"/>

**Boring Avatars: Tiny, Beautiful Placeholders**  
<https://boringavatars.com/>  
A tiny JavaScript library that generates custom, SVG-based avatars from any username and a color palette. perfect for dashboards and social apps.  
<img src="https://cdn.tw93.fun/blog/upic/E7x6G9.png" width="800"/>

**Apple Design Resources**  
<https://developer.apple.com/design/resources/>  
Did you know you can download official Apple design assets (fonts, icons, device frames) directly from their developer site? it’s a great way to ensure your apps feel right at home on iOS and macOS.  
<img src="https://cdn.tw93.fun/blog/upic/NdMpVh.png" width="800"/>

**sharing: Share Files between OSes via Terminal**  
<https://github.com/parvardegr/sharing>  
A clever CLI tool for sharing files between iOS and Android devices without needing to download a dedicated app on either end.

## Just Looking Around

**A "Slacking Off" Guide for Mac Users**  
<https://sspai.com/post/75805>  
A collection of tips and apps to help you be more efficient (and occasionally more stealthy) with your Mac. a great read for power users and beginners alike.

**Is Market Timing Useless? The Biggest Lie in Investing**  
A huxiu article arguing that market timing is actually a valid strategy for both retail and institutional investors in the Chinese stock market.

**Why Can't Millimeter Wave Radar Identify Static Objects?**  
A technical deep dive into why current autonomous driving systems struggle with recognizing stationary obstacles and what it means for the future of self-driving safety.

**The Death of the SIM Card?**  
With the iPhone 14 moving to eSIM-only in the US, is the physical SIM card finally on its way out? unfortunately, the transition is taking a bit longer in China.

**10 Little macOS Apps that Make a Big Difference**  
A curated list of small but mighty utilities that can significantly improve your daily macOS experience.