can i have a typed tuple?

[dennis luehring]

Jarrett Billingsley Wrote:

> > should i do a static if test in my item_list template or can
> > i limit the allowed type in the item_list interface?
> > "variadic list of this type"

> You have to do a static if or static assert.  Tuples are very permissive, 
> and don't really offer any way to restrict what kinds of things can be 
> passed to them. 

thx

should tuples offer more restrictions (optional) ?