Re: polymorphism on template parameters
Joe Greer wrote:
First, Instead of policies, you can use strategies that get
configured/set by the constructor. In other words, don't use templates
in this way if you want the resulting types to interact as if they were
the same type.
Hi Joe,
That's what I wanted to hear, actually. I couldn't see a way of doing it
with templates and policies, but I could be wrong... :(
The whole point of my exercise was to explore the potential of policies
so I don't need to go any further. Using strategies would work for sure,
but that wouldn't be innovative... ;)
Or, you can define an interface for the basic 'Thing'-ness and make all
your templated classes inherit from that and only use the template for
construction. i.e.
class IThing
{
public:
virtual void DoThing() = 0;
virtual ~IThing() {}
};
Hum... That might work as I want it... yes.
There is only one problem, the base class would end up defining all
methods of all sub-classes. When one adds a new sub-class you need to
change the base class.
cheers,
--renato
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