The Storable package brings you persistency for your perl data structures containing SCALAR, ARRAY, HASH or REF objects, i.e. anything that can be convenientely stored to disk and retrieved at a later time. It can be used in the regular procedural way by calling store with a reference to the object to store, and providing a file name. The routine returns undef for I/O problems or other internal error, a true value otherwise. Serious errors are propagated as a die exception. To retrieve data stored to disk, you use retrieve with a file name, and the objects stored into that file are recreated into memory for you, and a reference to the root object is returned. In case an I/O error occurred while reading, undef is returned instead. Other serious errors are propagated via die. WWW: http://search.cpan.org/dist/Storable/