Is there a nice syntax to achieve optional named parameters?

[Matheus]

On Thursday, 17 January 2019 at 01:43:42 UTC, SrMordred wrote:
> Let me throw this idea here:
>...

I usually do this too, I like to use struct and then in another 
language I use reflection do optimize binding.

Anyway I understood all your code, except for this "alias code"

> auto NewWindow( alias code )()
> {
> 	mixin("Config config = {"~code~"};");
> 	return Window(config);
> }

Looking on specs: https://dlang.org/spec/declaration.html#alias

"AliasDeclarations create a symbol that is an alias for another 
type, and can be used anywhere that other type may appear."

So with your example imagine this:

foo(alias x){}

foo("a");
foo(1);

'x' will be string one time and integer another? Or there is 
something that I'm missing.

Matheus.