Dynamic Ctors ?

[Voitech via Digitalmars-d-learn]

Hi, i have a variadic args template, with a class inside 
something like:

template foo(T...){


class Inner(){

...
...
}



}

Now i want to make Inner create or i will create manually, 
constructor for each of T... parameter types, but don't know what 
is syntax for it. I found that there is possibility to initialize 
T... types static variables with AliasSeq!(T) but how to do this 
automatically, or with static ifs,for constructors ?
I tried ...

template foo(T...){
alias Types=AliasSeq!(T);
Algebraic!(T) value;
this(Types value)
this.value=value;
}
}
But this dosn't work