HaloO,
Larry Wall wrote:
Then we'd write our "done_by" role above as:
role Num-1.3-JRANDOM does STD:Num does Complex;
method re (--> STD:Num) { self }
method im (--> STD:Num) { 0.0 }
The first issue I see with this approach is that we get one
more contender for the plain name Complex because I think
one wants to define an authority Complex along with a role
and a class. I.e. I would want the import site to read:
use Complex:Num;
Which also brings us to the second issue. To actually use
the Complex itself one then needs to write:
use Complex;
use Complex:Num;
unless Complex is a module that provides in addition to
homonymous role and class Complex a modified version of
Num under authority Complex. How would such a module be
defined?
module Complex
{
role Complex {...} # for the type
class Complex does Complex {...} # for instanciation
role Num-1.3-Complex does STD:Num does Complex
{
method re (--> STD:Num) { self }
method im (--> STD:Num) { 0.0 }
}
}
Regards, TSa.
--
