On 8/9/20 5:16 AM, lexxn wrote:
I'm trying to get the factory pattern going with classes
class A {}
class B {}
class C {}
auto getClassById(uint id)
{
if (id == 0) {
return cast(A)Object.factory("A");
} else if(id == 1) {
return cast(B)Object.factory("B");
} else {
return cast(C)Object.factory("C");
}
}
I'm getting 2 errors:
main.d(69): Error: Expected return type of main.A, not main.B:
main.d(67): Return type of main.Ainferred here.
Change your return type to Object.
Also is it possible to completely skip the getClassById function and if
I've and array string classes = ["A", "B"] to just
cast(classes[0])Object.factory(classes[0]);. I understand that I need to
cast classes[0].
This won't work.
If you know what your class is going to be, I'd just import the file
that contains it and avoid the whole Object.factory deal. It's going to
go away anyways.
In other words:
Object getClassById(uint id)
{
if (id == 0) {
return new A;
} else if(id == 1) {
return new B;
} else {
return new C;
}
}
-Steve
