Check if list of options is empty

With recent improvement in Snap! which means that custom reporters don't lose their existing variadic values if you edit them, I'm trying out using variadic input lists instead of fixed number of options

However, I need to work out if its returning any data at all and was faced by

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and I needed something to set options to an empty list in all cases and I came up with this

ProjectName=noOptions

And then I came up with this neater solution which seems to cope with any data type I throw at it
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This does rely on current behaviour of the join input list but as long as it doesn't error out I imagine it'll always return empty value if list is empty

You can also put the list as a non-input list in the join block to join the list.

Not sure what you mean by that - can you post a pic or project?