[Octave-bug-tracker] [bug #56323] Default (c)transpose for classdef and old style classes

[Kai Torben Ohlhus]

URL:
  <https://savannah.gnu.org/bugs/?56323>

                 Summary: Default (c)transpose for classdef and old style
classes
                 Project: GNU Octave
            Submitted by: siko1056
            Submitted on: Wed 15 May 2019 02:46:47 PM CEST
                Category: Interpreter
                Severity: 2 - Minor
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: Patch Submitted
             Assigned to: siko1056
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 5.1.0
        Operating System: Any

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Details:

When creating arrays of old style objects, as shown by the Blork class 

https://hg.savannah.gnu.org/hgweb/octave/file/15d3f8857326/test/classes/%40Blork


Matlab R2019a is able to (conjugate) transpose them without overloading
(c)transpose, what essentially is a modification of the array shape.


x1 = Blork ();
x2 = [x1 x1];
x2';
error: ctranspose method not defined for Blork class
x2.';
error: transpose method not defined for Blork class


The same applies for classdef classes, using the plist_t2 class as example 
https://hg.savannah.gnu.org/hgweb/octave/file/15d3f8857326/test/classdef


bla(1) = plist_t2;
bla(2) = plist_t2;
bla'
error: ctranspose method not defined for plist_t2 class
bla.'
error: transpose method not defined for plist_t2 class


The fix for the old style classes is rather simple and avoids slowdown by not
using m-files for standard behavior.  Thus I would like to include it into
5.2.0.



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File Attachments:


-------------------------------------------------------
Date: Wed 15 May 2019 02:46:47 PM CEST  Name: class_ctranspose.patch  Size:
4KiB   By: siko1056

<http://savannah.gnu.org/bugs/download.php?file_id=46912>

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