Scale By The Bay 2021 : Dean Wampler, Lessons Learned from 15 Years of Scala in the Wild

ai.bythebay.io Nov 2025, Oakland, full-stack AI conference Scala 3 was introduced earlier this year. It introduced significant changes to the language, many of which were motivated by the lessons learned from the past 15 or so years of actual use in many open-source and commercial applications. I'll explore these lessons and how Scala 3 addresses them. Many revolve around the pros and cons of implicits. Also, changes to the type system make it more "regular", robust, and expressive. Finally, the new, optional, and controversial "Python-like" syntax promotes even more brevity. It also acknowledges how influential and pervasive Python has become across our industry.