Variadic templates with aliases

[Philippe Sigaud]

> I've myself written something like the first, but the second approach
> suits my needs better. typeof(this) is very nice.


It is. For mixin templates, it's a must.


> I intend to use it (among other things) for multivectors, so the scalar
> type is not directly obtainable from the parts, but then, I can allow
> partwise multiplication with whatever type the parts may multiply.


Yes, that can be tested at compile-time.


> The nicest thing about the two approaches is that they are orthogonal - a
> single template mixin may implement them both!
>

OK, great! Don't hesitate to ask if you're stuck.
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