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MathGroup Archive 2007

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problem with Pick

  • To: mathgroup at
  • Subject: [mg78194] problem with Pick
  • From: "Chris Chiasson" <chris at>
  • Date: Mon, 25 Jun 2007 07:06:11 -0400 (EDT)
  • References: <>

Step to reproduce:
1. Evaluate these two inputs with a fresh kernel:

Expected results:

Actual results:

Relevant Documentation:
Pick[list,sel,patt] picks out those list[[i1,i2,...]] for which
sel[[i1,i2,...]] matches patt.

Relevant Evaluation:
In[3]:= MatchQ[{},{__}]
Out[3]= False

In[4]:= {Internal`$CreationID,$Version}
Out[4]= {853857,6.0 for Microsoft Windows (32-bit) (April 27, 2007)}


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