How to determine that if a folder is empty?

[David Cuthbert]

Mike Meyer wrote:
> Just out of curiosity, is there an OS out there where you can have the
> permissions needed to delete a directory without having the
> permissions needed to create it appropriately?

Not an OS, but AFS has a wider set of permissions (RLIDWKA - which, if I 
remember correctly, are read, look, index, delete, write, lock, 
administrate).