On Thursday, 24 December 2020 at 11:02:11 UTC, Mike Parker wrote:
On Thursday, 24 December 2020 at 10:33:00 UTC, Dmitriy Asondo
wrote:
The idea is to store somewhere services (classes) first and
only when the app need - instantiate services for
app/thread/http-request (as option) and provide values to
constructors via DI
There's `Object.factory`, which constructs a class instance
from a fully-qualified name:
https://dlang.org/phobos/object.html#.Object.factory
But IIRC there are issues with it in some cases and I believe
it's supposed to be deprecated at some point.
I'd just give the classes an interface and use function
pointers to construct them:
```
interface IService { ... }
alias ServiceMaker = IService function();
ServiceMaker[string] serviceRegistry;
class FooService : IService { ... }
IService makeFooService() { return new FooService(); }
void registerServices() {
serviceRegistry["FooService"] = &makeFooService;
}
```
Hm... So, I need helpers like common interface for services &
function-factory for every. It would be difficult to automate)
Ok, I see, thank you!
Is there any way, for example on compile step, to get class name
from class pointer? To automate generation of factory via template
