Arguments to subroutines are passed in the array @_, not in $_.

You could do something like this: 

sub mycheck {
   my $db = shift || "";
}
# or
sub mycheck2 {
   my $db = @_ ? $_[0] : "";
}

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

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