catchy phrase for this idiom?

[BCS]

Reply to Denis,

> Back on topic, I don't see anything wrong with this code. It defines
> exactly one alias.
> 
> I also think that it should define exactly one /public/ alias:
> 
> template Blah(T)
> {
> private alias Foo!(T).A Tmp1;
> private alias Bar!(Tmp1!(T)).B Tmp2;
> static if (Tmp2.C!(T)) {
> private alias Tmp2.ResultA Tmp3;
> } else {
> private alias Tmp2.ResultB Tmp3;
> }
> /*public*/ alias Tmp3!(Tmp2!(Tmp1!())).C Blah; }
> 

That covers my one major concern with the exactly one rule; local values.

OTOH I have used template with many public value as a type of compile time 
structs. It's an absolute must for anything thing that require data structures 
like parsing of strings.