how to update ri! from a sub-interface?

RE: how to update ri! from a sub-interface?

Stewart Burchell — Mon, 24 May 2021 17:00:08 GMT

It's worth noting the conceptually any ri! parameter is simply a "pointer' to a variable. That variable needs to exist in the parent interface object (or, if there is a stack of calls, at the very top-most interface) for the value to be changed from a sub-interface.

RE: how to update ri! from a sub-interface?

davel001150 — Mon, 24 May 2021 15:16:15 GMT

Yes, if you pass the ri! as a parameter of the rule that makes the sub-interface, then when you update the value inside that code, it will proceed to update it outside that code as well. In your sub-interface, it can have a completely different name, but that's not recommended. You have to a!save() into the name the parameter has in the sub-interface.

It's actually VERY good practice to explicitly label all the ways the data flows down through the nested code then back up through the nested code. Developers can track where a starting value comes from, and where a changed value ultimately goes.

RE: how to update ri! from a sub-interface?

natashan0002 — Sat, 22 May 2021 11:00:16 GMT

Hello,

You will have to send ri to subinterface first.

Then use save!() in the subinterface to update it.

This will return backthe changed ri.