[racket-users] Second Call for Papers: PACMPL issue ICFP 2018

2018-02-04 Thread 'Lindsey Kuper' via users-redirect
PACMPL Volume 2, Issue ICFP 2018 Call for Papers accepted papers to be invited for presentation at The 23rd ACM SIGPLAN International Conference on Functional Programming St. Louis, Missouri, USA

Re: [racket-users] Adding interactive overlays to racket plots

2018-02-04 Thread Jerzy Karczmarczuk
Le 04/02/2018 à 18:18, Alexander McLin a écrit : it is meaningless for there to be gaps in a histogram plot since it is intended to show a continuous distribution. ... Sorry if it seems nitpicky, I've done data processing... Good. ... And you have never seen histograms with gaps?? My turn to

Re: [racket-users] Adding interactive overlays to racket plots

2018-02-04 Thread Alexander McLin
Your interactive plot looks wonderful and would be a good replacement for some of R's statistical graphing features. I'm excited you're making this valuable contribution to Racket. I did noticed something in your documentation at https://alex-hhh.github.io/2018/02/interactive-overlays-with-the-

Re: [racket-users] Defining algebraic data types?

2018-02-04 Thread Sam Tobin-Hochstadt
A few answers: 1. Use struct subtyping to give a type that includes both kinds: (struct dual ()) (struct quaternion dual (scalar vector)) (struct dual-quaternon dual (real dual)) 2. Use a library that supports algebraic data types, such as https://pkgs.racket-lang.org/package/datatype

[racket-users] Defining algebraic data types?

2018-02-04 Thread HiPhish
Hell Racketeers, I am trying to write an implementation of the mathematical concept of dual quaternions in Racket. Dual quaternions are an algebraic type and there are several equally valid way to look at them. Let me give some background first. A dual number (a + bε) is similar to a complex numb