Add a new VI - Class Hierarchy From Path

[tst]

LabVIEW should have a VI which accepts a path to a class and returns a 1D array of the names of all the classes it inherits from, similar to how the Call Chain primitive returns an array of the calling VIs. It should do this without loading it into memory (which can be very expensive).

This can be useful for determining whether a class inherits from another class without having to load it. See this thread for an example.

Additionally, there should probably also be a similar VI which accepts the class instead of a path, just for symmetry.

[Miha_Vitorovic]

I definitely think that the "class for input" one is more than welcome.

Miha

[AristosQueue (NI)]

> Additionally, there should probably also be a similar VI which accepts the class instead of a path, just for symmetry.

Um... if the node takes a class as input, then the class is already in memory. That would kind of defeat the purpose. If the class is already in memory, we already have mechanisms for doing this.

[tst]

> If the class is already in memory, we already have mechanisms for doing this.

Like I said, this would be for symmetry. I don't know the existing mechanisms well, since I never really did this myself, but my impression was that they weren't as simple as having a single standard VI, and while this would not be useful for keeping the memory consumption down, it does have other uses.

[mikemattball]

So what is the mechanism to do this?

[SteveChandler]

Ever notice how almost every idea related to object oriented programming gets about twelve kudos then gets hidden in the noise?

Kudos.

[tst]

> ...So what is the mechanism to do this?

There is a VI here which is supposed to do it. I haven't checked if it works in an executable.

http://lavag.org/topic/8158-inheritance-hierarchy/page__view__findpost__p__73950