Michael Kraus wrote: > "A class that cannot have direct instances. The opposite of an > abstract class is a concrete class."
Your class is not an abstract class in this sense, as you can instantiate objects of the class. This is the meaning that I have always used (coming from C++).
To clarify, of course with Perl you can always instantiate objects of the class. I should have said that an abstract class lacks an *implementation* of the method in this definition.
Example:
package Abstract;
sub new {
my $self = bless {}, shift;
$self->foo();
}package Concrete;
@ISA = qw(Abstract);
sub foo {
my $self = shift;
$self->{foo} = 'Hello';
}package main;
$obj1 = Concrete->new(); # OK $obj2 = Abstract->new(); # Not OK
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