[Swift-user] Is there a way to have an optional command line argument to a swift script?

Glen Hocky hockyg at uchicago.edu
Thu Apr 9 13:40:34 CDT 2009

I have a new command line argument for my script and I want to check if 
it's there or not.
doing @arg("foo") just gives
    Missing command line argument: foo


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