[erlang-questions] YAWS queryvar for empty variables

Vik Olliver vik@REDACTED
Wed Feb 4 03:05:32 CET 2009

If a URL with args like:


is passed to queryvar/2, how do I determine that the variable "bar" has 
been defined and contains an empty list, as opposed to the non-existent 
variable "cow" that hasn't been defined at all?

Vik :v)

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