2 # hash_sf($row_data,'field'[,'subfield'])
4 # e.g. hash_sf($row,'700','a')
9 my $subfield = shift @_;
11 my $i = shift @_ || 0;
15 if ($row->{$field}->[$i]) {
17 # subfield list undef, empty or no defined subfields for this record
18 my $all_sf = $row->{record}->{$field}->[$i] || confess "can't find field $field:$i",Dumper($row);
19 $all_sf =~ s/[\^\$]./ /g; # nuke definitions
22 my $sf = $row->{$field}->[$i]->{$subfield};