# 170. Hangzhou Spring

> The cover photo was taken over the weekend in my residential area. Hangzhou’s spring is beautiful, but it’s quite short—it feels like winter just a month ago and it’ll be short-sleeve weather next month. the current temperature is lovely, so it’s best to get out and enjoy it before the May heat sets in.

- Issue: 170
- Published: 2024/04/01
- HTML: https://weekly.tw93.fun/en/posts/170
- JSON: https://weekly.tw93.fun/api/en/posts/170.json
- Chinese original: https://weekly.tw93.fun/posts/170.md

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<img src="https://gw.alipayobjects.com/zos/k/3c/169.jpg" width="800" />

<small>The cover photo was taken over the weekend in my residential area. Hangzhou’s spring is beautiful, but it’s quite short—it feels like winter just a month ago and it'll be short-sleeve weather next month. the current temperature is lovely, so it’s best to get out and enjoy it before the May heat sets in.</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 Learning

**Modern C++ Tutorial**  
<https://learnmoderncpp.com/>  
A great introductory course for self-learning modern C++. updated as recently as January 2024.  
<img src="https://gw.alipayobjects.com/zos/k/wb/SCR-20240324-tqai.png" width="800" />

**Web Development History**  
<https://webdevelopmenthistory.com/index/>  
For those interested in the web’s past, this site feels like walking through a digital museum of "antiques"—even though most of it is only ~30 years old.  
<img src="https://gw.alipayobjects.com/zos/k/qt/SCR-20240324-tohu.png" width="800" />

## Trending Tools

**Morse Code Learning Tool**  
<https://www.perry.qa/morse>  
Want to learn Morse code? this tool makes it fun to learn the system of dots and dashes used for communication. it feels straight out of a spy movie.  
<img src="https://gw.alipayobjects.com/zos/k/tl/SCR-20240324-tlza.png" width="800" />

**Awesome Front-end Mini-interactions**  
<https://drams.framer.website/>  
This site showcases beautiful physical-style UI effects (like buttons and toggles) with cute sound effects. Perfect for inspiration on fun web micro-interactions.  
<img src="https://gw.alipayobjects.com/zos/k/9t/ilUcpS.png" width="800" />

**Hacker News Daily Top 10**  
<https://www.daemonology.net/hn-daily/>  
If you like Hacker News but don't want to browse everything, this site aggregates the top 10 most popular posts of the day. Saves a lot of time.  
<img src="https://gw.alipayobjects.com/zos/k/mu/SCR-20240324-tjtc.png" width="800" />

## Just Looking Around

**Sam Altman’s Playbook for Startups**  
<https://jxp73q7qjsg.feishu.cn/docx/WCNZdKDa4o2eUrxK5ElcfBXEnah>  
A must-read. Success is built on a great idea, team, product, and execution. most people try to skip the execution part, but that's where the hard work happens.

**Selected Insights from the Playbook:**

- **Product**: Your primary goal is to make something people love. Successful companies ALWAYS start with this.
- **Team**: A great team is the foundation. Founders need grit, toughness, and resourcefulness. choose co-founders carefully—it's your most important decision.
- **Development**: focus on real user needs. stay simple and easy to use.
- **Execution**: keeping growth is the key. as CEO, focus on the vision and strategy, and hire people based on talent over just experience.
- **Growth**: it's the solution to all problems. focus on retention and revenue, not vanity metrics.
- **Competitors**: focus on your internal problems. Most startups die from self-inflicted wounds, not competition.
- **Profitability**: find a way for people to pay for your value. focus on unit economics and LTV.