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[Octave-bug-tracker] [bug #51411] parcellfun shows misleading error for

From: Andreas Weber
Subject: [Octave-bug-tracker] [bug #51411] parcellfun shows misleading error for empty input
Date: Fri, 7 Jul 2017 05:35:12 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0


                 Summary: parcellfun shows misleading error for empty input
                 Project: GNU Octave
            Submitted by: andy1978
            Submitted on: Fri 07 Jul 2017 09:35:11 AM UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Missed Error or Warning
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.2.1
        Operating System: GNU/Linux



parallel 3.1.1

If parcellfun is called with empty arguments it shows

octave> x = parcellfun (3, "size", {})
error: parcellfun: failed to fork processes

which is misleading. I think it should show an error indicating that the input
set is empty or IMHO even better: just return an empty matrix/cell array


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