Useful habit: when you type

sub mycheck 
{

[download]

go on and type

my () = @_;

right away. In the present case you would fill in the list of receiving variables with $db:

my ($db) = @_;

Since you want the default value to be the null string, you can go on and say

$db ||= "";

In reply to Re: passing a scalar to a function by Narveson
in thread passing a scalar to a function by nsupathy0

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