Passing a single tuple or multiple values

[jmh530 via Digitalmars-d-learn]

On Tuesday, 19 July 2016 at 07:23:52 UTC, John wrote:
>
> auto bar(T...)(T x)
> {
>   static if (T.length == 1 && isTuple!(T[0]))
>     return foo(x.expand);
>   else
>     return foo(x);
> }
>

Hmm, this actually doesn't seem to be resolving my issue. I'm 
still getting the error about not being able to expand x.

I tried it like below and got the same error.

auto bar(T...)(T x)
{
	static if (T.length > 1)
	{
		return foo(x);
	}
	else static if (T.length == 1 && isTuple!(T))
	{
		return foo(x.expand);
	}
}