rpms/perl-Tie-RefHash
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Use references as hash keys
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README.md

perl-Tie-RefHash

This module provides the ability to use references as hash keys if you first "tie" the hash variable to this module. Normally, only the keys of the tied hash itself are preserved as references; to use references as keys in hashes-of-hashes, use Tie::RefHash::Nestable, included as part of Tie::RefHash.