abstract function templates

[Simen kjaeraas]

bearophile <bearophileHUGS at lycos.com> wrote:

> (I don't know why templated methods can't be virtual)

First of all, they can. But it's a shitload of extra work, and requires
that compilation be  mixed up with linking.

Whenever a templated method is used from any subclass, it has to be
generated for the base class, and any and all subclasses that override
it. We can't know every subclass until link-time (not even then, given
dynamic linking).


-- 
Simen