my %args = ( flags => 0x8001, img => "/path/file.jpg", ... );
if (ref $_[0] eq 'HASH') {
    @args{keys %{ $_[0] }} = values %{ $_[0] };
} else {
  for (qw( flags img name big gallery page caption num )) {
    $args{$_} = shift if @_;
  }
}
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