"Functional Programming is old. Ancient. Like right after FORTRAN. But it’s the future. Trust me, I’m named after the dude who knew about Jesus 700 years early. Seriously, it’s not going to take 700 years for FP to go mainstream. Some would argue that it already is. Python, Ruby, and others have adopted a number of FP features. Here’s all you need to get started right now and get ahead of the curve (right after you’ve installed Debian or Ubuntu)..."