[Swift-user] Mapping question: how to map an optional file?

[Michael Wilde]

Was: Re: mapping question 

(relaying to swift-user to solicit additional thoughts) 

Glen, 

Offhand I dont see any alternative to the empty file. Ive had the same need in the past and dont see how to do it other than an empty file. Its almost like we need some way to represent a null file without the overhead of actually passing one. And some way to indicate when a null file is acceptable. 

In your application would an empty file be problematic in performance or semantics? 

- Mike 

----- "Glen Hocky" <hockyg at uchicago.edu> wrote: 
> I'm trying to modify my swift scripts slightly so that one output file is optional. i know previously we had done something like map to an empty file but i'm having a hard time doing that without having my application create the empty file. Any suggestions? 

-- 
Michael Wilde 
Computation Institute, University of Chicago 
Mathematics and Computer Science Division 
Argonne National Laboratory 

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