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Tie::Hash::Stack is a Perl module which maintains an array of hashes like a stack. SYNOPSIS use Tie::Hash::Stack qw(pop_hash push_hash merge_hash); my %hash; tie( %hash, "Tie::Hash::Stack" ); # Ties the hash $hash{ 1 } = "one"; $hash{ 2 } = "two"; $hash{ 3 } = "three"; push_hash... Platforms: *nix