ReactiveML is an extension of a general purpose language a la ML with parallel and synchronisation primitives to develop reactive applications. It is based on the `reactive model’ introduced by Boussinot in the 90s, that retains the key principles of synchronous languages — at the programming level, time is discrete and global to all the processes whose parallel composition behave deterministically — but relaxes it to allow for the dynamic creation of processes. Therefore, it keeps the expressiveness and deterministic garantees of synchronous languages like Esterel but removes its real-time constraints. ReactiveML allows to program applications as diverse as network simulators, mixed-music, or chatbots.

In this tutorial, we will present the main concepts underlying the language and have a hands-on session where the participants see both how to program in ReactiveML and how to program ReactiveML.