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MathGroup Archive 2007

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Re: Mapping a pure function with 2 conponents.

  • To: mathgroup at smc.vnet.net
  • Subject: [mg77279] Re: Mapping a pure function with 2 conponents.
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
  • Date: Wed, 6 Jun 2007 07:11:18 -0400 (EDT)
  • Organization: The Open University, Milton Keynes, UK
  • References: <f43i20$3hl$1@smc.vnet.net>

phoenix7744 at gmail.com wrote:
> I'm trying to get the following code to work:
> 
> Map[#1^2 + #2 &, {{0, 1}, {2, 3}, {4, 5}}]
> 
> The goal is to use a pure function in order to achieve the result:
> {1, 7, 21}
> 
> The issue is that the evaluation involves   #1^2 + #2 & [{0,1}]
> instead of #1^2 + #2 & [0,1]
> 
> Thanks, in advance.

Try

In[1]:= Map[#[[1]]^2 + #[[2]] &, {{0, 1}, {2, 3}, {4, 5}}]

Out[1]= {1, 7, 21}

Regards,
Jean-Marc


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