Eh? You will need to post code because it has nothing to do with $a and $b being in one package or another. You can see this example works fine.

You can declare a my $a or my $b in package main but not in package Sort as these vars need to be package globals there for sort() to work. 

package Sort;

# my($a,$b); # <<-- can't do that in this package

sub my_num_sort {
    my $list_ref = shift;
    # return as a list ref for efficiency
    return [sort { $b <=> $a } @$list_ref];
}

package main;

# my($a,$b); # <<-- you can do this in this package (no sorts)

my @list = ( 10, 42, 66, 1, 81, 32 );

# pass and return as a list ref for efficiency
my $sorted = Sort::my_num_sort(\@list);

print "$_ " for @$sorted;

[download]

cheers

tachyon

s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print

In reply to Re: package globals and sort() by tachyon
in thread package globals and sort() by Anonymous Monk

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