Actually there is a way to avoid the explicit loop, but it is a little inefficient: 
sub option {
  my $self = shift;
  if (1 == @_) {
    return $self->{option}->{ shift(@_) };
  }
  else {
    %{$self->{option}} = (%{$self->{option}}, @_);
  }
}

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In reply to Re (tilly) 1: setting and retrieving sub-hash elements in an object by tilly
in thread setting and retrieving sub-hash elements in an object by Amoe

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