\cat programming

Opposite to =~?

Pass-by-reference parameters?

http://www.perl.org

Perl is a scripting language specialized in text manipulation. I'm not a Perl expert, so I often forget its somewhat cryptic yet efficient syntax. This page will complement my short memory.

Opposite to =~?

=~!? !=~? This is sometimes really confusing. The answer is !~.

Pass-by-reference parameters?

sub foo{
	my $a = shift;
	${@$a}[0] = 2;
}
sub bar{
	my $a = shift;
	${%$a}{bar} = 2;
}

my @foo;
$foo[0] = 1;
print "$foo[0]\n";
foo(\@foo);
print "$foo[0]\n";

my %bar;
$bar{bar} = 1;
print "$bar{bar}\n";
bar(\%bar);
print "$bar{bar}\n";