LOUIS BRANDY PAUSES before answering, needing some extra time to choose his words. “I’m going to get in so much trouble,” he says. The question, you see, touches on an eternally controversial topic: the future of computer programming languages. Brandy is a software engineer at Facebook, and alongside a team of other Facebookers, he spent the last two years rebuilding the system that removes spam—malicious, offensive, or otherwise unwanted messages—from the world’s largest social network. That’s no small task—Facebook juggles messages from more than 1.5 billion people worldwide—and to tackle the problem, Brandy and team made an unusual choice: they used a programming language called Haskell.
Source: Facebook’s New Spam-Killer Hints at the Future of Coding | WIRED