So there I was, happily rolling along, writing my class, and using an array ref as my underlying data structure. I then wrote another method:
sub another_method {
my ($self, $magic_val) = @_;
$$[MAGIC_VALS]{$magic_val} = 1;
}
and ran it. There were no compile-time or run-time errors, but the logic did not work.
Can you spot the problem? That's right: it should be
$$self[MAGIC_VALS]{$magic_val}
instead!
What is this magical
@$? Perl does not complain about it and will happily use this array:
use strict;
use warnings;
$$[0] = 1;
$$[1] = 'dude!';
print "@$", "\n"; # Prints "1 dude!"
It's not in
perlvar... What's up with this variable?