This is a Rust "Hello World" program in 0x A presses.
$ vim hello.rs $ rustc --test hello.rs $ ./hello --quiet Hello, World!
If you don't know, [the A Button Challenge] is a Mario 64 speedrun category in which runners attempt to use the A button (the jump button!) as few times as possible. Make sure you watch the classic Watch for Rolling Rocks - 0.5x A Presses video linked above in order to understand.
This project is TJ "Henry" Yoshi approved:
Nice - TJ "Henry" Yoshi (@tj99er) https://twitter.com/tj99er/status/1185701669696204800