On Friday, 16 November 2018 at 14:55:52 UTC, Aditya wrote:
On Friday, 16 November 2018 at 14:30:02 UTC, Adam D. Ruppe
wrote:
PS object.factory sucks and I hope it is removed some day.
There's no plan to do so, but I still wouldn't actually rely
on it... instead, I'd write your own factory function and
registration system, so you control it and will have
reliability to your specific needs.
but still if the factory works for you, eh, you can use it.
How can one write own factory function ? Any pointers to this ?
Thanx
for learning purpose you can make very simply a factory function
based on string comparison.
Object simpleFactory(string className)
{
import the_module_where_stuff_is_declared;
import the_module_where_thing_is_declared;
if (className == "Stuff")
return new Stuff;
else if if (className == "Thing")
return new Thing;
// and so on
else return null;
}
although this requires imports so the command line for building
should include more path using the "-I" cmd line switch.
I propose this solution because making a true factory might be
too complicated if you just start learning D.
