Try 

foreach my $key (keys %Hash) {
 push @hasharraylengths, scalar @{$Hash{$key}};
}

[download]

The idea : $Hash{$key} is an array reference. Dereference, with @{}, and force scalar ccntext with scalar.

HTH

In reply to Re: Array length within a hash by arturo
in thread Array length within a hash by TStanley

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