elm. A delightful language for reliable webapps.
- elm-lang.org

Elm is a domain-specific, purely functional programming language used for declaratively creating client-side web apps which compile to JavaScript.

In this talk you'll be shown The Elm Architecture, a nestable pattern for building applications, and Elm's full type inference system that helps prevent users from running into errors.

We'll look at how Elm handles HTTP requests and websockets, how it handles uncertainty, the use of partial function application for reusable views, interaction with JS libraries, and how data immutability gives you undo/redo for only a few lines of code.