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Re: List of position-specifying functions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg102388] Re: List of position-specifying functions
  • From: dr DanW <dmaxwarren at gmail.com>
  • Date: Fri, 7 Aug 2009 05:32:42 -0400 (EDT)
  • References: <h5ebj8$1s5$1@smc.vnet.net>

You almost had it:

In[4]:= Function[p, #[[p]] &] /@ plist

Out[4]= {#1[[2]] &, #1[[5]] &, #1[[4]] &, #1[[6]] &, #1[[3]] &}

I suspect that you were getting tangled up in nesting the # and &
function notation.  By making the outer Function[] explicit, you can
disambiguate the situation.  I use this technique of using two
different notations a lot when I am faced with this kind of
introspective problem.

Daniel


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