Sorry, I just have a second to spend on this. If I understood correctly, somewhere you have 

$href->{$k} = $v;

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where you want 
push @{ $href->{$k} }, $v;

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which is short for 
push @{ $href->{$k} ||= [] }, $v;

[download]

In reply to Re: Hash handling error by ikegami
in thread Hash handling error by satzbu

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