geometric computations in a Performance-sensitive optimization algorithm that was drafted in Python. After confirmation, the whole algorithm was rewritten to C++, which was fine since it was part of a large science experiment
rewriting / wrapping some middleware + APIs so that other people can transition new work to rust. The resulting interfaces turned out very pleasant to use!
At home:
building command-line software for my Gemini PDA. This is an ARM device and Rust is far easier to cross-compile than C++.
Implementing a larger optimization & solver algorithm (a few thousand lines) which I coded some time ago in Clojure. Very easy to parallize.
Varies a bit with job, but by far the most in the last 15 years:
Linux (Debian), Emacs, tiling window manager (i3/sway/stumpwm), also gollum wiki + org-mode for writing docs. For small quick edits, I use vim.
On the job, I write mostly C++/Python/Go/Rust, at home more Rust, Python, and the Lisps.
What do you use rust for?
At work:
At home: