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MathGroup Archive 2007

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Re: Re: Mapping a pure function with 2 conponents.

  • To: mathgroup at smc.vnet.net
  • Subject: [mg77377] Re: [mg77321] Re: Mapping a pure function with 2 conponents.
  • From: DrMajorBob <drmajorbob at bigfoot.com>
  • Date: Thu, 7 Jun 2007 04:01:59 -0400 (EDT)
  • References: <f43i20$3hl$1@smc.vnet.net> <24080548.1181133969665.JavaMail.root@m35>
  • Reply-to: drmajorbob at bigfoot.com

Much simpler is:

#1^2 + #2 & @@@ {{0, 1}, {2, 3}, {4, 5}}

{1, 7, 21}

Bobby

On Wed, 06 Jun 2007 06:33:09 -0500, Adriano Pascoletti  
<adriano.pascoletti at gmail.com> wrote:

> On Jun 5, 1:39 pm, phoenix7... 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.
>
> You must access the first and the second part of the (unique) argument
> (#1)
> In[1]:= (#1[[1]]^2 + #1[[2]] & ) /@ {{0, 1}, {2, 3}, {4, 5}}
>
> Out[1]= {1, 7, 21}
>
> Adriano Pascoletti
>
>
>



-- 
DrMajorBob at bigfoot.com


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