This will work: 
use warnings;
use PadWalker qw(var_name);;

my $var = 10;
print_name(\$var);

sub print_name {
    print var_name(1, shift);
}

[download]
However, according to the PadWalker docs, it works only if $var is a "my" variable.

Cheers,
Rob

In reply to Re: To print name of a scalar by syphilis
in thread To print name of a scalar by l33t

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