Exporting is bad 'mkay. This came out of a discussion
here. I use Exporter to manage my exports. This is not intended to replace it but merely for illustrative purposes for anyone who is thinking about rolling their own import. Doesn't support :tags (easily done though) , but does support @EXPORT, @EXPORT_OK, @EXPORT_FAIL and $VERSION checking.
Update Fixed bug. Wasn't removing the modulename from @_, which meant it tried to import a var with the name specified in use.
our @EXPORT = qw (@array $VAR );
our @EXPORT_OK = qw($OK_ONLY);
our @EXPORT_FAIL = qw ($DONTDOIT);
sub import {
no strict 'refs';
my $used_name = shift ; # Remove the Module name.
my ($Version) = grep { m/^\d[\d.]*$/} @_;
my @ex = grep { !m/^(\d[\d\.]+)$/} @_;
die "Insufficient or missing \$VERSION: $VERSION, $Version require
+d." if $Version && $VERSION <= $Version;
push @ex, @EXPORT ;
my %EXP = map {($_,'mKay')} @EXPORT,@EXPORT_OK;
$EXP{$_} = 'Bad' for @EXPORT_FAIL;
my $that_pack = caller();
foreach (@ex){
next if m/^\d[\d\.]+$/;
die "Denied. Can't export $_" if $EXP{$_} eq 'Bad';
die "Can't export unknown symbol $_" unless $EXP{$_} eq 'mKay'
+;
m/^([\@\$\*\&\%]?)(\w+)/;
my ($t,$v) = ($1,$2);
$t = '&' unless $t;
*{$that_pack.'::'.$v} = $t eq '@' && \@{$v} || $t eq '%' && \%
+{$v} ||
$t eq '&' && \&{$v} || $t eq '$' && \${$v} ||
$t eq '*' && \*{$v} || \*{$_};
}
}
