I personally think that 'main' variables, while able to be
accessed by subroutines declared in the same package, are
safe enough, as long as you don't access them directly in
a subroutine.
use strict;
my $foo = 'yo';
&bar($foo);
print "$foo\n";
sub bar {
my $bar = shift;
$bar .= ' dude';
}
Declare you variables in main, just don't use them directly
in your subroutines and you'll be okay.
Jeff
L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
F--F--F--F--F--F--F--F--
(the triplet paradiddle)
| [reply]
[d/l] |
If you are worried about the subroutines accessing these variables, this is the way to avoid the problem; go for it! It is a good programming practice to have subroutines get all their input through the argument list and not through external variables, because it makes the code more maintainable. | [reply] |