I built a coding tutor that won't let me cheat my way through it. Here's the prompt.

Joel Cunningham is Lifehacker’s Deputy Editor. He has 15 years of experience as a writer and editor. Previously, he was managing editor of content marketing for Barnes & Noble, where he founded the ...

I have eight years of experience covering Android, with a focus on apps, features, and platform updates. I love looking at even the minute changes in apps and software updates that most people would ...