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This is perl 5, version 12, subversion 1 (v5.12.1) built for MSWin32-x86-multi-thread
producesprint length keys %$hashref; print Dumper $hashref;
1 $VAR1 = { 'x/index.yaml' => 0, 'y/index.yaml' => 0, 'z/index.yaml' => 0 };