Just to expand on this point for the OP's benefit, consider:
use strict;
use Dumpvalue;
my $dumper = Dumpvalue->new();
my @a = (3, 1, 4, 1);
my @b = (5, 9);
my @c = (2, 6, 5);
sub ex1 {
map 10*$_, @_;
}
$dumper->dumpValue([ex1(@a)]);
print "\n";
# array refs
sub ex2 {
map scalar @$_, @_;
}
$dumper->dumpValue([ex2(\@a, \@b, \@c)]);
print "\n";
# implicit array refs through prototypes
sub ex3 (\@\@\@) {
map scalar @$_, @_;
}
$dumper->dumpValue([ex3(@a, @b, @c)]);
print "\n";
__END__
0 30
1 10
2 40
3 10
0 4
1 2
2 3
0 4
1 2
2 3
Note that the bodies of
ex2 and
ex3 are identical. IMO, however,
ex2 is superior, because it can take as arguments
any number of array refs, whereas
ex3 must take
exactly three arrays as arguments.
Follow-up question: is there any way to define a sub that takes as input one or more arrays?