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Re: How to use Pick[]; Is this a bug?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg127699] Re: How to use Pick[]; Is this a bug?
  • From: Peter Pein <petsie at dordos.net>
  • Date: Wed, 15 Aug 2012 03:37:06 -0400 (EDT)
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Am 14.08.2012 10:22, schrieb benp84 at gmail.com:
> In[1]:=  Pick[{1, 2, 3, 4, 5}, {9, 0, 7, 0, 6}, Except[0]]
> Out[1]:= {1, 2, 3, 4, 5}
>
> Shouldn't this return {1, 3, 5}, since these are the corresponding elements that match Except[0]?
>

Hi,

  the whole list {9, 0, 7, 0, 6} is unequal to the Integer 0.

What you want is:

Pick[{1, 2, 3, 4, 5}, {9, 0, 7, 0, 6}, Except[0, _Integer]]

Cheers,
  Peter



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