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In this episode I talk with David Christiansen. We talk his introduction to functional programming, research in dependent types, Idris, Nuprl and LFC traits, work to add dependent types to macro-expansion in Racket, and much, much more.

Our Guest, David Christiansen

@d_christiansen on Twitter

http://davidchristiansen.dk/

Conference Announcements

RacketCon is October 7th & 8th at the University of Washington, with keynote speakers Dan Friedman and Will Byrd. Visit http://con.racket-lang.org/ for more information and to register.

Celebrate the 10th anniversary of the release of Clojure October the 12th – 14th at the Clojure/Conj in Baltimore, Maryland. Visit http://2017.clojure-conj.org/ for more information and to register.

LambdaWorld will be taking place in Cadiz, Spain on October 26th and 27th. For more information visit and to keep updated visit http://www.lambda.world/.

CodeMesh is coming up November 8th and 9th in London. For more information, and to keep an eye open for registration, visit http://www.codemesh.io/.

Moonconf will be taking place the 9th-11th of November. For more information visit http://moonconf.org/.

Clojure SYNC will be taking place in New Orleans on February 15th & 16th of 2018. For more information and to register visit: http://clojuresync.com/.

LambdaDays 2018 will be taking place February 22nd and 23rd in Kraków, Poland. For more information, and to register, visit http://www.lambdadays.org/.

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

Announcements

Some of you have asked how you can support Functional Geekery, in that vein,

Functional Geekery now has a Patreon Page.

If that is one of the ways you would like to show your support, you can

find out more at https://www.patreon.com/fngeekery.

Topics [@3:22]

About David

Idris

Indiana University Bloomington

Racket

Type Driven Development in Idris

The Type Theory Podcast

Dan Friedman on Functional Geekery

David’s introduction to programming and computers

MS-DOS GW-BASIC

Major in Philosophy with Minor in Computer Science

What put functional programming on David’s radar

Lisp

Haskell

A Gentle Introduction to Haskell

Structure and Interpretation of Computer Programs

PLTScheme, now Racket

Internship doing I.T.

QBasic

C

Perl

Smalltalk

David’s grad school work

Exposure to Idris at St Andrew’s summer school

General ML exposure around Copenhagen

False dichotomy between industry and “academic” languages

Progression to push into dependent types

“Part of my job description at the time was: learn about interesting things”

The Type Theory Podcast

Software Foundations

Adam Chlipala on Functional Geekery

Dependent Types as a aesthetic thing

Type Driven Development

Interactive programming environments from the 80’s

“Let the computer do what the computer is good at, which is the details”

Nuprl

Jon Sterling’s jonPRL and RedPRL

Types as predicates that describe behavior

Agda

Coq

Typed Racket

Using Racket as a proof language for Nuprl type system

Logic for Computable Functions by Dana S. Scott

Robin Milner

Edinburgh LCF

ML

Running LCF style proofs in Racket macro-expansion

Hackett

cur

miniKanren

µKanren

Scribble

Slideshow

video

Resources to get started understanding dependent types

Software Foundations

Upcoming _Little Schemer_ family book on dependent types with Dan Friedman

Little Schemer

Upcoming talks previewing book at RacketCon and CodeMesh

Oregon Programming Languages Summer School videos

Suggestions for a title in Little Schemer tradition

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