ref: 64462bb36f34be7ab4aa1fcf7195739eb617a044
dir: /test/gtrait.myr/
use std trait comparable @a = cmp : (a : @a, b : @a -> std.order) ;; impl comparable @a :: numeric @a = cmp = {a, b -> std.numcmp(a, b) } ;; const main = { std.put("{}", cmp(1, 2)) }