A systematic complete collection of statute law, from which all laws that have been superseded or have become obsolete have been eliminated; also a digest or compendium of rules or regulations. Among the famous legal codes are the laws of Hammurabi the Babylonian, in pre-Christian days, those of the Emperors Theodosius II (438) and Justinian (6th century), of King Alfred of England (887), and of Napoleon, and finally the Code of Canon Law, begun by Pope Pius X in 1904, and published in 1917 by Benedict XV.