The language documentation covers some basic uses of TypeTuples in templates, but nothing about using them with classes. I would like a template class, which essentially wraps a function, which has template parameters for return value and template tuple arguments.

However, what if I want to convert a TypeTuple of int, double, string to its respective Function-wrapped TypeTuple, i.e. Function!int, Function!double, Function!string. Is there any way to do so?

Sean Eskapp <eatingstaples@gmail.com> wrote:

> The language documentation covers some basic uses of TypeTuples in templates,
> but nothing about using them with classes. I would like a template class,
> which essentially wraps a function, which has template parameters for return
> value and template tuple arguments.
>
> However, what if I want to convert a TypeTuple of int, double, string to its
> respective Function-wrapped TypeTuple, i.e. Function!int, Function!double,
> Function!string. Is there any way to do so?

std.typetuple has staticMap, which sounds like what you want:

alias TypeTuple!( int, double, string ) tup;

alias staticMap!( Function, tup ) functions;

Is this what you want?

-- 
Simen

That looks like it.. only, it's not working:

void main()
{
	TypeTuple!(int, int) foo;
	foo[0] = 1;
	foo[1] = 2;

	double MakeStuff(in int bar)
	{
		return cast(double)bar;
	}

	auto foobar = staticMap!(MakeStuff)(foo);
}

This fails compilation with the error "Error: function expected before (), not ()
of type ()"

Nevermind, I see my error.
Thank you!