How to determine if all arguments are nil?

[Tim Hunter <TimHunter@...>]

I have a varargs function. What is the Lua idiomatic way of determining 
if all the arguments are nil? I've thought of two ways:

1. #{...} == 0
2. next{...} == nil

This function is called very frequently, so I'd prefer not to have to 
create a table if I can avoid it.

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