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CentOS 7.0 - man page for dbm_filter::null (centos section 3pm)

DBM_Filter::null(3pm)					 Perl Programmers Reference Guide				     DBM_Filter::null(3pm)

DBM_Filter::null - filter for DBM_Filter
use SDBM_File; # or DB_File, or GDBM_File, or NDBM_File, or ODBM_File use DBM_Filter ; $db = tie %hash, ... $db->Filter_Push('null');
This filter ensures that all data written to the DBM file is null terminated. This is useful when you have a perl script that needs to interoperate with a DBM file that a C program also uses. A fairly common issue is for the C application to include the terminating null in a string when it writes to the DBM file. This filter will ensure that all data written to the DBM file can be read by the C application.
DBM_Filter, perldbmfilter
Paul Marquess perl v5.16.3 2013-02-26 DBM_Filter::null(3pm)