Reset all Members of a Aggregate Instance

[Tofu Ninja via Digitalmars-d-learn]

On Thursday, 3 December 2015 at 21:04:00 UTC, Nordlöw wrote:
> ...

I think reflection will be a bad choice for this because of 
private members and what not.
I think the correct way is:

void reset(C)(ref C c)
{
	static if(is(C == class))
	{
		auto init = typeid(c).init();
		auto objmem = ((cast(void*)c)[0 .. init.length]);
		if(init.ptr == null) (cast(byte[])objmem)[] = 0;
		else objmem[] = init[];
		if(c.classinfo.defaultConstructor != null)
			c.classinfo.defaultConstructor(c);
	}
	else c = C.init;
}

Seems to work for structs, classes, and basic types. It even 
calls the default constructor for classes, even if there is 
inheritance and the object passed in is not actually C but a sub 
class of C.