On Tue, Jan 15, 2008 at 03:54:54PM -0800, Mark Schoonover wrote:
The way I understand it all is that C pointers and Perl refs are the same, atleast in creating them. my $ref = \$a
If you try to do arithmetic on a ref, it turns into an integer. Can Perl cast that back to a reference?
int *p = &a;
p++; or p = (int*) 42;
Where's the difference?
The difference between references and pointers is that a language with references will only allow you to assign those references to valid things. Pointers can be arbitrarily manipulated. Usually, even interpreted languages that have C bindings will be able to manipulate pointers, but probably in an awkward way. Dave -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-lpsg
