I have a hash structure that I'd like to keep intact after a subroutine call. I've tried several things, but nothing works. There's got to be something simple I've overlooked:
my %myhash;
build_hash(\%myhash);
print Dumper(\%myhash); ## shows %myhash to be empty
sub build_hash {
my $href = shift;
my %results;
my $sth = $dbh->prepare( $query );
$sth->execute();
my $ct = 0;
while (my $tmp_href = $sth->fetchrow_hashref) {
$ct++;
$results{$ct} = $tmp_href;
}
%{ $href } = %results;
## also tried Storable's dclone(), but same results
## $href = dclone(\%results);
print Dumper($href); ## prints desired results
}
The resulting structure looks like this (it's exactly the way I want it):
<code>
$VAR1 = {
'1' => {
'f1' => undef,
'f2' => 'bleep@hotmail.com',
'f3' => 'OTH',
'f4' => 'N',
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