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MathGroup Archive 2012

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Understanding patterns

  • To: mathgroup at smc.vnet.net
  • Subject: [mg126094] Understanding patterns
  • From: Sam Takoy <sam.takoy at yahoo.com>
  • Date: Mon, 16 Apr 2012 06:10:27 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com

Hi,

I hoping to get some pointers on understanding patterns. For example,
I can't quite make sense of the following:

f[p : {__?NumericQ}] :=

What is the meaning of "{", the double underscore, and the question
mark?

Many thanks in advance,

Sam



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