ref: d18c7f36b75feda3a11e54b00be8b131ea5caea2
dir: /lib/std/slpop.myr/
use "types"
use "alloc"
pkg std =
generic slpop : (sl : @a[:] -> (@a, @a[:]))
;;
generic slpop = {sl
var elt
elt = sl[sl.len - 1]
sl = slgrow(sl, sl.len - 1)
-> (elt, sl)
}