Functional Geekery Episode 26 – Phil Freeman

In this episode I talk with Phil Freeman on PureScript. We cover his reason for creating PureScript, how it differs between other languages that compile to JavaScript, PureScript Conf 2015, the future of PureScript, and different ways to get started with PureScript.

Our Guest, Phil Freeman

@paf31 on Twitter
paf31 on Github


This episode is sponsored by DigitalOcean. DigitalOcean makes it quick and easy to get up running with hosting your project. New users use the promo code GEEKERY to get $10 credit when signing up.

This episode is sponsored by The courses build good fundamentals and guide you to develop deep skills with the Clojure language and libraries. Listeners get a 25% discount by using the link


Code Mesh 2015 is going to take place on the 3rd and 4th of November, and listeners can use the code fngeekery10 to get 10% off when you register.

Chicago Erlang 2015 is coming up on the 10th of October, in the format of a two track, one day Erlang workshop. To find out more and to register visit

CityCode Chicago will be taking place on the 9th of October. City Code Chicago is a one day immersive technology conference for programmers to spark creativity and innovation. To find out more and to register visit

ElixirConf 2015 is happening in Austin, TX on October 1st-3rd. Keynote speakers include past guests José Valim and Jessica Kerr, with over 28 speakers and over 200 guests. To check the schedule and register visit

If you have a conference related to functional programming, contact me, and I will be happy to announce it.


About Phil Freeman
Need for Sum Types and Types around Strings
First version released around end of 2013
Sum Types vs Product Types
PureScript compilation going directly to JavaScript
JavaScript interop and FFI (Foreign Function Interface)
“PureScript is a better CoffeeScript, not a Haskell for the web”
Differences from Haskell
Halogen library
Functional Reactive Programming
Brian McKenna
PureScript Conf 2015
QuickCheck port for PureScript
Getting started with PureScript
PureScript by Example
Project Suggestions page on PureScript wiki
PureScript Contrib organization on Github
Near term future of PureScript
Improve error messages in PureScript
Improve compiler speed
Google Summer of Code and PureScript
Exhaustiveness Checker for PureScript
Allow to target multiple platforms for backend
Schedule for looking to release milestones
Looking for improving the editor support
Pulp by Bodil Stokke
#purescript on IRC
PureScript Google Group
Brian McKenna’s talk at CUFP

As always, a giant Thank You goes to David Belcher for the logo design.