Optimising fizzbuzz with hand-written x86-64 assembly and AVX2: https://codegolf.stackexchange.com/a/236630
I guess it was only a matter of time, but it's an impressive achievement: 31GB/second!
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Achievement unlocked: when trying to work around an Emacs bug with long lines and pipes: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=6149#19 I hit a bug in Cask, the Emacs environment manager! https://github.com/cask/cask/pull/596
Software is hard.
My Linux systems used to use Xorg, but they all use Xwayland now. I'm not sure exactly when they switched.
That's a big a achievement! Replacing a major part of the desktop Linux stack (without hiccups) is no easy frat.
This seven-minute demo of creating a game with PICO-8 is the best dev tool demo I've seen in long time: https://www.youtube.com/watch?v=K5RXMuH54iw
In this short period, he shows writing code, sprites, maps, music, exporting and sharing projects! This is an amazing achievement.