=head1 DESCRIPTION
-=head1 Declaration and Access of Arrays of Arrays
+=head2 Declaration and Access of Arrays of Arrays
The simplest thing to build an array of arrays (sometimes imprecisely
called a list of lists). It's reasonably easy to understand, and
But you cannot do so for the very first one if it's a scalar containing
a reference, which means that $ref_to_AoA always needs it.
-=head1 Growing Your Own
+=head2 Growing Your Own
That's all well and good for declaration of a fixed data structure,
but what if you wanted to add new elements on the fly, or build
In fact, that wouldn't even compile. How come? Because the argument
to push() must be a real array, not just a reference to such.
-=head1 Access and Printing
+=head2 Access and Printing
Now it's time to print your data structure out. How
are you going to do that? Well, if you want only one
}
}
-=head1 Slices
+=head2 Slices
If you want to get at a slice (part of a row) in a multidimensional
array, you're going to have to do some fancy subscripting. That's