http://twitter.com/_rvklein_/status/1389459636848312324

rvk0

May 04, 2021 at 01:59AM — _rvklein_ —
var fx=[];console.log((function(fx){var x=fx[1]||0;var f=fx[0]||function(f,x){return([f(f,x),x]);};return(f(f,x+1));})(fx));

— http://twitter.com/_rvklein_/status/1389459636848312324