[Octave-bug-tracker] [bug #34441] Weird bug with vector subtraction

[Jordi Gutiérrez Hermoso]

Update of bug #34441 (project octave):

                  Status:                    None => Invalid                
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #1:

It's not a bug. It's a feature I implemented recently. It's equivalent to 

bsxfun(@minus, [1 2 3], [1 2 3]')

except I haven't really documented it yet. I'm writing a chapter for the
manual documenting thihs and other vectorisation features.

My inspiration is that this is turned on by default in numpy, and it's a very
useful thing, plus it doesn't break Matlab backwards compatibility. Matlab
code will still work unless you're counting on v - v' to error out in Matlab
code. Here is the numpy document that inspired me to do this:

http://www.scipy.org/EricsBroadcastingDoc

Given this, do you really think automatic binary singleton expansion is a bad
idea? It seems to work well in numpy.

I'm closing this as "not a bug", but if you think this is a bad idea, please
explain why.

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