Julien Verlaguet


Programmer at Facebook

Julien has spent the last 6 years writing tools for developers at Facebook. His main contribution was Hack (a gradually typed variant of PHP). His current work revolves around reactive programming.

YOW! 2017 Sydney

Reflex: a new reactive programming language at Facebook.


Facebook is developing a new experimental programming language called Reflex. Its main characteristic is its “spreadsheet semantics”: the runtime recomputes the state of the program incrementally when changes occur. This talk will cover the basics of the language as well as how things work under the hood.