Getting more specific class automatically

[Gub156]

Hello everyone,

I'm using a VI in which I have an array of different types of refnums. I'd like to know if there's a way to get the most specific class “automatically”, i.e. without having to test the class name or ID and then condition it (see attached VI).

Thanks for your help!

[paul_a_cardinale]

Sorry, no.

[raphschru]

If you have generic objects as an input, you cannot avoid casting them to a more specific class to use their specific properties.

You can kudo this (old) idea that aims to simplify want you want to do:

https://forums.ni.com/t5/LabVIEW-Idea-Exchange/Allow-vi-server-reference-type-as-case-selector/idi-p...

Regards,

Raphaël.

[paul_a_cardinale]

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@raphschru wrote:

If you have generic objects as an input, you cannot avoid casting them to a more specific class to use their specific properties.

You can kudo this (old) idea that aims to simplify want you want to do:

https://forums.ni.com/t5/LabVIEW-Idea-Exchange/Allow-vi-server-reference-type-as-case-selector/idi-p...

Regards,

Raphaël.

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You could create an XNode that is a case structure with that functionality.

[Kyle97330]

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@paul_a_cardinale wrote:

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@raphschru wrote:

If you have generic objects as an input, you cannot avoid casting them to a more specific class to use their specific properties.

You can kudo this (old) idea that aims to simplify want you want to do:

https://forums.ni.com/t5/LabVIEW-Idea-Exchange/Allow-vi-server-reference-type-as-case-selector/idi-p...

Regards,

Raphaël.

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You could create an XNode that is a case structure with that functionality.

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On the off chance you're thinking of doing just that, maybe spend 10-15 minute listening to Darren Nattinger tell you not to use them first:

https://youtu.be/HKcEYkksW_o?t=589

(That is a link to his "LUDICROUS ways to Fix Broken LabVIEW Code" presentation from 2022 at the timestamp he starts talking about xnodes)

[paul_a_cardinale]

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@Kyle97330 wrote:

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@paul_a_cardinale wrote:

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@raphschru wrote:

If you have generic objects as an input, you cannot avoid casting them to a more specific class to use their specific properties.

You can kudo this (old) idea that aims to simplify want you want to do:

https://forums.ni.com/t5/LabVIEW-Idea-Exchange/Allow-vi-server-reference-type-as-case-selector/idi-p...

Regards,

Raphaël.

---

You could create an XNode that is a case structure with that functionality.

---

On the off chance you're thinking of doing just that, maybe spend 10-15 minute listening to Darren Nattinger tell you not to use them first:

https://youtu.be/HKcEYkksW_o?t=589

(That is a link to his "LUDICROUS ways to Fix Broken LabVIEW Code" presentation from 2022 at the timestamp he starts talking about xnodes)

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Well, I wasn't thinking of doing it.  But also, at my age, someone's opinion about what I should and shouldn't do, doesn't carry much weight.

[paul_a_cardinale]

Maybe I should invent a malleable XNode 🤪 (*.xnodem)!