Zig—a system programming language which prioritizes robustness, optimality, and clarity

made by andrewrk, submitted by hellerve
There are many factors that make Zig beautiful: its structure and ambition, its execution, and the way that the community is working together. I’m excited to see where this project is going!

PANE

made by joshuah, submitted by alicia
PANE is an innovative and beautiful way to visualize what's happening while you write code. I especially liked seeing the construction of fractals!

Relit: Typed Literal Macros for Reason

made and submitted by charlesc
Relit is the implementation of relatively recent research into typed literal macros: a generalization of custom literal syntax. (Any new literal type, i.e. regex literals or html literals, can be defined and exported by a library.)

Advent of Code 2018 day 3 solution in Julia

made and submitted by porterjamesj
This is my solution to day 3 of Advent of Code 2018 (https://adventofcode.com/2018/day/3). I was pretty excited about this code, because it maps very cleanly to how I thought about the problem in my head when I sat down to write it. I think it's a great illustration of how nice it can be to solve problems like this in languages with built-in support for multidimensional arrays!

Secrets of smooth Béziers revealed

made and submitted by Raph
An interactive visualization of the space of Euler spiral segments and their optimal conversion to cubic Béziers.

Ergodicity

made by squidarth, submitted by alicia
This blog post really clearly explains a fun concept related to probability and expected value.

Magic wand learns spells through machine learning and an IMU

made and submitted by jennifer
Jennifer Wang built a Harry Potter magic wand that uses machine learning to detect gestures. The wand contains an inertial measurement unit (IMU) to sense position & orientation. You can watch her talk on the ML design process and find the code on GitHub.

Stencilfy

made by scientiffic, submitted by alicia
This is such a useful and simple tool! Use Stencilfy to write text in any font you like, and turn it into a stencil you can cut out on a laser cutter. Read more about it here: https://medium.com/@scientiffic/stencilfy-creating-laser-cutter-friendly-type-b7b8ef1831ec 

Turnstyle

made by erinkshaw , submitted by porterjamesj
Beautiful visualization of NYC subway activity over the course of a week.

war in pieces

made by fiono, submitted by porterjamesj
It explores an interesting way to consume media, and is a great example of what you can get done in a week in an environment like RC.