Is there a built-in way to check for inputs in H15?

[magneto]

Hi,

 

I remember reading about it but it might be a dream. Is there a built-in way for HDAs to do this rather than doing opexist(opinputpath(".", 0)) which seems to give warnings in H15 also?

 

 

Thanks

[anim]

yes, it's new in H15
"The Disable when and Hide when syntax now supports the pseudo-functions ninputs() and hasinput(n) to allow hiding/disabling depending on whether an input is wired."

http://www.sidefx.com/docs/houdini15.0/news/15/ui#id7f1d97eb0fe0

[magneto]

Thanks anim. I assume these are not available to use inside the HDA subnet?

[anim]

well there you have expressions as you mentioned

what kind of warning you are talking about?

[magneto]

It says invalid input path "" or something when nothing is connected, how how else am I supposed to get the input path to see if it's empty, right?

 

Another problem is when you disconnect a node from your input, it doesn't trigger and update so your network still sees it as the previous state (connect or disconnected).

[anim]

I vaguely recall something about not updating, even though I don't remember circumstances

however I'm not getting the warning, and for this simple case updating works fine

switch_if_input_exists.hip