Reactive Programming is getting a lot of attention these days, and it promises to reduce frustration, bugs, and greenhouse gas emissions. Unfortunately, there’s a sizeable learning curve involved while you try and get your head to think in streams instead of imperative sequential processes.

For the web-based everything notebook that I’m working on, I’ve been writing backend hookups to various programming REPLs, including IPython and Gorilla. I wanted to be able to evaluate rust code as well in this notebook environment, and so I set about writing a simple server that would compile up a string in rust when asked. This proved do have a couple of gotchas, so I thought I’d air my thoughts here.

My blog used to use Hyde, a python clone of the popular jekyll platform. When Ghost came out, I quickly switched over, due in main part to the great editor and beautiful themes. I used buster to serialize the blog so that I could still serve it as a static site. I had two main regrets, though. 1) using buster to scrape ghost was a hack. 2) My posts were locked in an sqlite db, where git could only do a binary diff.

Go and Rust seem like natural competitors. They are both trying the role of a C-like low-level language with modern affordances, safety, and nice, clean concurrency. And they’re each backed by a major player in the browser race - go by Google, rust by Mozilla.

A while ago, I made a cellular automata simulator in Go, inspired by this video about a “rock, paper, scissors” simulation, where there are three “species” of cells which consume each other.

Last week I rewrote this in Rust

The perceptron is one of the most primitive learners, and is also of the easier ones to understand intuitively. I’ll first give some background, and then an animation in javascript with 2D data, and an implementation in python, with graphs of it running on some traditional datasets.

A few months ago I saw @scanlime’s “Zen Photon Garden” on hacker news, and was really impressed. In short, you draw walls/mirrors with your mouse, and it ray-traces light from a central source. Very beautiful and “zen”. However, as a programmer, drawing lines by hand was far too inaccurate. So I forked it and added a scriptable interface for adding walls.