Replace Vec#of with VecFactory#ofObjectVec

First of all: Thank you very much for addressing #546 as part of release 5.2.0.

My code previously looked like:

return Vec.of(fitnesses.stream().toArray(Fitness[]::new));

Now I would like to use the aforementioned new feature with something like:

private final VecFactory<Fitness[]> vecFactory = VecFactory.ofObjectVec(
		Comparator.naturalOrder(),
		(u, v, i) -> u[i].compareTo(v[i]),
		Optimize.MAXIMUM, Optimize.MAXIMUM, Optimize.MINIMUM);

// ...

return vecFactory.newVec(fitnesses.stream().toArray(Fitness[]::new));

However, I’m unsure about the ElementDistance. I was looking into Vec#of in order to replace it with VecFactory#ofObjectVec, where I saw the following code:

static <C extends Comparable<? super C>>
Vec<C[]> of(final C[] array) {
	return of(
		array,
		(u, v, i) -> clamp(u[i].compareTo(v[i]), -1, 1)
	);
}

Naturally I would try to do the same, but Basics#clamp is internal and I wonder what is the proper way to reproduce the Vec#of behavior while providing the new optimization directions.

[jenetics]

Makes sense, but I would name it

VecFactory.ofObjectVec(List<Optimize>)
VecFactory.ofObjectVec(Optimize...)

and probably adding also

VecFactory.ofObjectVec(ElementDistance, List<Optimize>)
VecFactory.ofObjectVec(ElementDistance, Optimize...)

I’m not sure about the VecFactory.ofComparableVec(). In this case, you don’t need a factory, you can create a Vec instance with Vec.of directly.

[beatngu13]

Wanted to submit a PR, but haven’t found time for it … so thanks a lot for doing it! 🙏