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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.
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