konst-aa / fun

A collection of scripts and mini-projects

fun

A collection of scripts and mini-projects, hopefully a few will become something meaningful. See the rundown section for a description of what's in this repo, and some projects may have their own Replit that one can fork and experiment with. To run something locally, see the dependencies section. Everything here is licensed under the MIT License.

rundown:

• autodiff.scm is a short automatic differentiation library that comes with a repl. Its whole thing is being able to evaluate derivatives at a point, but the derivatives it prints out are in s-exps and can't be further manipulated. To get started, once in the program's repl, run the :h command. Writeup Replit

dependencies:

• autodiff.scm should be R5RS compliant, so it should work on any R5RS Scheme. I'd recommend chicken as I am most familiar with it. I made a replit for it too, but one needs to sign up to run it. Gambit is also a fantastic option, and it has a web version, though it makes the autodiff repl look weird, so it needs the following patch:

;; Patch for running on try.gambitscheme.org
;; Replace the readrepl function with this one.
(define (readrepl)
  (display ">> ")
  (flush-output-port) ; flush port to make sure the prompt is displayed
  (read))