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[Octave-bug-tracker] [bug #50359] isnull false negative


From: Ernst Reissner
Subject: [Octave-bug-tracker] [bug #50359] isnull false negative
Date: Tue, 21 Feb 2017 05:07:51 -0500 (EST)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:51.0) Gecko/20100101 Firefox/51.0

Follow-up Comment #3, bug #50359 (project octave):

Apologies, it is still not clear to me: 
if 

%!assert (isnull ([]), true)
%! x = [];
%! assert (isnull (x), false);

then assignment of [] to x or reading [] from x 
changes the object. 
Is this true? 

Also from the documentation, 
i cannot figure out, 
what is meant by the difference between isnull and isempty. 
isnull seems to imply isempty but not the other way round, 
correct? 




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