algorithmic modeling for Rhino
This is just a little something that I've found to be useful. Its a definition to generate parameters containing a null value or an empty tree. you can use them to help construct data trees, or insert them into your stream to test how your definition handles unexpected input.
One gotcha to watch out for: once you right click and choose "internalize data", you can no longer copy and paste that parameter. If you copy/paste a parameter containing only a null, it will degrade to an empty tree. if you copy/paste a parameter containing an empty tree, it will degrade further and display a "failed to collect data" warning identical to a brand new parameter.
Thank you Reid.