Type of a missing actual parameter

[Dicebot]

On Wednesday, 9 October 2013 at 12:33:07 UTC, Manfred Nowak wrote:
> The compiler accepts a dangling comma in a comma separated list 
> of actual
> parameters.
> What is the type of this missing actual parameter?
>
> -manfred

There is no missing parameter. It is just a convenience syntax to 
avoid copy-paste mistakes. Those two are equivalent:

```
void foo( int, double, string, );
```
vs
```
void foo( int, double, string );
```