Hacker News: deech

Shen Trick Shots – LambdaConf 2016

deech — Sat, 01 Oct 2016 15:54:08 +0000

Article URL: https://www.youtube.com/watch?v=BUJNyHAeAc8

Comments URL: https://news.ycombinator.com/item?id=12618362

Points: 2

# Comments: 0

New comment by deech in "Shen: A Sufficiently Advanced Lisp [video] (2014)"

deech — Wed, 01 Apr 2015 02:18:42 +0000

You don't have to use any of the syntax if you don't want to. You can write directly in KLambda. Here's how `map` is defined in KLambda:

   (defun map (f l)
     (shen.map-h f l ()))

   (defun shen.map-h (f l accum)
     (cond ((= () l) (reverse accum))
           ((cons? l) (shen.map-h f (tl l) (cons (f (hd l)) accum)))
           (true (shen.f_error shen.map-h))))

New comment by deech in "Shen: A Sufficiently Advanced Lisp [video] (2014)"

deech — Tue, 31 Mar 2015 23:04:13 +0000

The second half of the talk (http://www.youtube.com/watch?v=lMcRBdSdO_U&t=17m30s) is about turning a JSON object into a type using macros and meta-programming.