Explore functional programming concepts through a live coding session that transforms imperative code into functional code. Learn key concepts like referential transparency, first-class functions, higher-order functions, closures, lambda calculus, currying, partial application, function composition, and point-free notation. Gain a clear understanding of these mathematical concepts applied to computing, demystifying functional programming for those new to the paradigm. Follow along as speakers Xavier Detant and Laurent Maillet, experienced developers and community organizers, guide you through this transformation, making complex ideas accessible and practical for everyday programming.