On Fri, 2 Sep 2005, Luinrandir wrote:
> Can I pass a hash to a package?
Yes.
(Hint: passing any complex data around is generally best done with the
use of references, so that's the area you need to be studying up on.)
Pseudocode:
my $result = go_do_something_with( \%this_hash );
...
sub go_do_something_with {
my $hashref = shift;
...
return $result;
}
You just have to get the hash data back out of $hashref this way.
If you need to pass multiple hashes, the same idea applies:
my $new_result = act_upon( \%hash_a, \%hash_b, \%hash_c );
...
sub act_upon {
my ( $a_ref, $b_ref, $c_ref ) = @_;
...
return $result;
}
And, again, you just need to unpack $a_ref, $b_ref, and $c_ref in
exactly the same way you unpacked $hashref in the first example.
If you need to pass more complex data structures, this is the general
approach to doing so that most people seem to use.
--
Chris Devers
¯)làwÓ î¬
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