Idea: limited template expansion

[David Nadlinger via Digitalmars-d]

On Wednesday, 20 January 2016 at 22:00:45 UTC, Steven 
Schveighoffer wrote:
> Imagine if you such a call returned something, and you simply 
> used it throughout the rest of your function. The compiler 
> could rewrite this as a template and compile all three versions 
> and branch to the appropriate one, but your code would simply 
> read as a straightforward procedural function.

But if you abstract away the dispatch part into a (meta)template 
function like I suggested, the caller would still be just as 
linear, right?

How would the client code be simpler with a built-in language 
feature?

  — David