[Za-pm] Passing values

[Spike]

Hi All

First query of the year!

If I have a function (sub routine) like :

sub double {
my $num = shift;
return $num * 2;
}

I could say:

$value = 3;
$value = double($value);
print "$value\n";  #   6 expected

My question is how could I write that function so that it works directly on 
the variable that is passed to it in the same way that functions like chomp do?

$value = 3;
double($value);
print "$value\n";  #   6 expected





Spike Hodge

UNIX Programmer
M-Web Technology
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