[Numpy-discussion] setmember1d memory leak?

[Robert Kern]

Robert Cimrman wrote:
> Robert Kern wrote:
>> Jan Strube wrote:
>>> I would also like to see a method that doesn't have the unique members
>>> requirement.
>>> If setmember1d cannot be modified to do that, is there another method
>>> that doesn't have these restrictions. Or could one be added?
>> If you can write one that's reasonably efficient, yes.
> 
> Or you could just call unique1d prior to your call to setmember1d - it
> was meant to be used that way... you would not loose much speed that
> way, IMHO.

But that doesn't do what they want. They want a function that gives the mask
against their original array of the elements that are in the other array. The
result of

  setmember1d(unique1d(ar1), unique1d(ar2))

is a mask against

  unique1d(ar1)

not

  ar1

as they want.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
 that is made terrible by our own mad attempt to interpret it as though it had
 an underlying truth."
  -- Umberto Eco