struct Test {
	something string
}

struct Dependency {}

struct Factory {
	build fn () !
}

fn inject[T](mut serv T) ! {
	$for field in T.fields {
		if field.typ is string {
			serv.$(field.name) = 'Hello world!'
		}
	}
}

fn use_factory[F, E](factory fn (dep F) !E) Factory {
	return Factory{
		build: fn [factory] [F]() ! {
			mut dep := F{}
			inject[F](mut dep)!
			dump(factory(dep)!)
		}
	}
}

use_factory[Dependency, Test](fn (dep Dependency) !Test {
	return Test{
		something: 'daleks!'
	}
}).build()!