How do I keep persistent data across program calls?
For some specific applications, you can use one of the
DBM
modules. See
the AnyDBM_File manpage
. More generically, you should consult the FreezeThaw, Storable, or Class::Eroot modules from
CPAN.
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How do I determine whether a scalar is a number/whole/integer/float?
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How do I print out or copy a recursive data structure?
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