PeepCode has a series called "Play by Play" (https://peepcode.com/screencasts/play-by-play https://peepcode.com/screencasts/play-by-play) where you can see a lo

PeepCode has a series called "Play by Play" (https://peepcode.com/screencasts/play-by-play https://peepcode.com/screencasts/play-by-play) where you can see a lot of professionals solve a small problem in 1-2 hours. It goes through their thought process, design and implementation. I think I've seen Ruby, JS, Python and even C in some of those screencasts.