if (exists $hoh{$array_name}->{$to_find}) {

[download]
should normally be 
if (  exists( $hoh{$array_name} )
   && exists( $hoh{$array_name}->{$to_find} )
) {

[download]

to prevent autovivification of entries into %hoh. That might not matter here, though.

In reply to Re^4: specific array in hash of arrays by ikegami
in thread specific array in hash of arrays by kwn

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