wq (c)tttiw (l)MIT
Site   https://wq-pl.com
Source https://codeberg.org/wqpl

wq               repl
wq -h            usage help
echo '!h'|wq     refcard

cargo install wqpl
# or, get a copy of source from https://codeberg.org/wqpl/wq, and
cargo run --release

fib:{(f_:{$[x=0;y;f_[x-1;z;y+z]]})[x;0;1]}
fib 90

{_:{$.[x=0;@r(0;1)];(a;b):_ floor[x/2];c:a*(2*b-a);d:a^2+b^2;$[x%2=0;(c;d);(d;c+d)]};_[x]0}9999

bug reports/questions/suggestions -> https://codeberg.org/wqpl/wq/issues