Someone know what could be write as default value for a function imput
var ?
Screenshot would also be nice to see what you are trying to do and where you are getting stuck
I try to use a Function.Aplly in a Custom Node.
It’s work if connect a function to the input but if not… the custom no give “function”. I need a default value

Try this:

To define default values in a CN use =. Declaring type and rank (if the input takes lists) is optional
Sorry but my problem is not with the arg input but with the function imput.
If I don’t give imput to the function, the custom node return “function”.
great solution 
also works great with Object.IsNull if like me you find double negatives like not null false confusing
