bugGNU Octave - Bugs: bug #64783, Default number of output arguments...


bug #64783: Default number of output arguments not 1 for anonymous functions

Submitter:  Fernando <tutissanalio>
Submitted:  Tue 17 Oct 2023 11:20:18 AM UTC
Category:  Interpreter Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Matlab Compatibility
Status:  None Assigned to:  None
Originator Name:  Open/Closed:  * Open
Release:  * dev Operating System:  * Any
Fixed Release:  None Planned Release:  None
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Tue 17 Oct 2023 11:20:18 AM UTC, original submission:  

In octave (I tried with default, stable and ver 6.4.0), anonymous functions return multiple output arguments in contexts where normal m-functions return only one:

octave:1> a=struct('re',{1,2},'im',{3,4});
octave:2> a.re
ans = 1
ans = 2
octave:3> f=@(a)a.re;
octave:4> f(a)
ans = 1
ans = 2
octave:5> [f(a)]
ans =
   1   2

This is incompatible with Matlab. In Matlab:

>> a=struct('re',{1,2},'im',{3,4})
a =
  1×2 struct array with fields:
>> f=@(a)a.re
f =
  function_handle with value:
>> f(a)
ans =
>> [f(a)]
ans =

Fernando <tutissanalio>


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