Will Teach Yu

Boost app engagement with chat, voice, and video APIs Sendbird is a service for helping you add social features to your app. Wanna add in-app chat? Sendbird does that. Wanna add in-app voice or video calls? Sendbird does that. Here’s how I always think about stuff like this. Whatever … Teaching Web Dev for Free is Good Business It feels like a trend (and a smart one) for tech platforms to invest in really high-quality learning material for their platform.

At Uber, business metrics are vital for discovering insights about how we perform, gauging the impact of new products, and optimizing the decision making process. The use cases for metrics can range from an operations member diagnosing a fares issue at the trip level to a machine learning model for dynamic pricing that shapes a balanced and robust marketplace in real time at global scale.

We’ve seen the checkbox hack and how it can be used to build a complete state machine in CSS. Today, we’ll take that line of thought a step further and build a simple game of Whack-A-Mole, where the player needs to react quickly to win … all without a touch of JavaScript. This might seem a little silly in a language that doesn’t have any notion of timers or intervals, but the secret is that CSS does — it’s just packaged in a little feature called CSS Animations.