Hi, Today is my first day in the Perl world and have tons of questions. My questions could be silly, please help :) 
package DUMPVAR;
sub dumpvar {
    my ($packageName) = @_;
    local (*alias);             # a local typeglob
    # We want to get access to the stash corresponding to the package
    # name
    *stash = *{"${packageName}::"};  # Now %stash is the symbol table
    $, = " ";                        # Output separator for print
    # Iterate through the symbol table, which contains glob values
    # indexed by symbol names.
    while (($varName, $globValue) = each %stash) {
        print "$varName ============================= \n";
        *alias = $globValue;
        if (defined ($alias)) {
            print "\t \$$varName $alias \n";
        } 
        if (defined (@alias)) {
            print "\t \@$varName @alias \n";
        } 
        if (defined (%alias)) {
            print "\t \%$varName ",%alias," \n";
        }
     }
}

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I am not quite understand what does $, = " "; do in this package. Thank you.

In reply to What does $, = " " do in this code? by alwynpan

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