DZDanny Zhenginblog.hackunited.org·3d ago · 2 min readCookies and LocalStorage: the GOATs of Web Development You close a tab while ordering Chipotle, open it the next day, and your shopping cart is still the same. Your dark mode preference on Colab is exactly how you left it. Websites have a really cool/clev00
DZDanny Zhenginblog.hackunited.org·Aug 23 · 2 min readWhy Accuracy Isn't Enough: Evaluating Machine Learning Models the Right WayWhen building a machine learning model, accuracy is usually the first number people look at. If a model is 95% accurate, it sounds impressive. But accuracy doesn't always tell the full story. Imagine 20
DZDanny Zhenginblog.hackunited.org·Aug 16 · 2 min readWhat is a Package Manager?Let's say you are building your own app for some project and need a calendar feature. Writing hundreds of lines of code to calculate leap years and track days of the week is extremely annoying/tedious10
DZDanny Zhenginblog.hackunited.org·Aug 9 · 2 min readTaking the Initiative: The Power of Cold OutreachUnderstanding the value of a strong network is only the first step; actively building it requires stepping out of your comfort zone. Often, the bridge between where you are and the opportunity you wan10
DZDanny Zhenginblog.hackunited.org·Aug 3 · 2 min readHow WhatsApp Delivers Billions of Messages Every DaySending a message on WhatsApp feels almost instant. You type a message, tap Send, and within seconds it appears on someone else's phone sometimes on the other side of the world. But what actually happ20
