> Am 06.02.2021 um 21:44 schrieb Luís Oliveira <luis...@gmail.com>:
>
> On Sat, 6 Feb 2021 at 20:07, Rudi Araújo <rudi.ara...@gmail.com> wrote:
>> Class::newInstance() doesn't have any parameters (also, it's deprecated:
>> better to use getConstructor() or getDeclaredConstructor() and call
>> newInstance() on it).
>
> I guess this bit about getConstructor() explains why it'd be more
> convenient to use a Factory, or the Factory method pattern, or some
> dependency injection framework.
>
Yeah. Could be.
But this constructor thingy could be hidden in a function similar as you would
create a constructor function make-foo in Common Lisp.
The reflection stuff is not considered a good practice in certain types of
applications.
Dependency injection is about something else IMO. Well, Abstract Factory is
about it, too, inversion of control.
It allows you to create something without having to know the concrete type and
without having to have a source dependency on it.
In Common Lisp this could be solved easily by just separating a protocol from
the implementation, maybe in separate packages.
Manfred
