[Octave-bug-tracker] [bug #45487] isa function not working when checking for multiple classes

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?45487>

                 Summary: isa function not working when checking for multiple
classes
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Tue 07 Jul 2015 08:06:43 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: giangi
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.2
        Operating System: Any

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Details:

Hi here is the description for the isa function
Function File: isa (obj, classname)
...
...

If classname is a cell array of string, a logical array of the same size is
returned, containing true for each class to which obj belongs to. 

Here is an experiment
>> isa(rand(10),{'numeric','logical'})
ans =

   0   0

>> isa(rand(10),{'numeric'})
ans =  1
which is incompatible (but correct) with the above result. 
This is used in the validateattributes.m and was giving me the wrong result
(that means that the bug is propagated to the above function) and that's how i
found out.
Cheers
giangi




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