[Octave-bug-tracker] [bug #38460] Option 'stable' missing from unique()

[Rik]

Follow-up Comment #5, bug #38460 (project octave):

I just checked in a different way of verifying the arguments
(http://hg.savannah.gnu.org/hgweb/octave/rev/51b13fe45a94).

I hadn't really looked at this code until the check-in brought it to my
attention, but the original code before Julien wasn't very well written. 
unique() was calling unique() recursively on it's own input arguments which is
slow.  Also, ismember () is a relatively slow m-file compared to built-in
functions like strcmp() and any().  I re-coded and benchmarked and there was a
9.5% savings with my changes so I checked them in.

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