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

• To: mathgroup at smc.vnet.net
• Subject: [mg127696] Re: How to use Pick[]; Is this a bug?
• From: Bob Hanlon <hanlonr357 at gmail.com>
• Date: Wed, 15 Aug 2012 03:36:06 -0400 (EDT)
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• References: <20120814082241.EB76F6854@smc.vnet.net>

Appears to be a bug.

list = Range[5];

sel = {9, 0, 7, 0, 6};

Here are a few workarounds:

Pick[list, # != 0 & /@ sel]

{1, 3, 5}

Pick[list, sel, _?(# != 0 &)]

{1, 3, 5}


Bob Hanlon


On Tue, Aug 14, 2012 at 4:22 AM,  <benp84 at gmail.com> wrote:
> 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]?
>

• References:
  • How to use Pick[]; Is this a bug?
    • From: benp84@gmail.com