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MathGroup Archive 2007

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Re: Evaluation Question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg76467] Re: [mg76448] Evaluation Question
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Wed, 23 May 2007 05:04:29 -0400 (EDT)
  • Reply-to: hanlonr at cox.net

data = IntegerDigits[#, 2, 3] & /@ Range[0, 7];

f[a_, b_, c_] = a + b + c;

f @@@ data

{0,1,1,2,1,2,2,3}

@@@ is shorthand for @@#&/@

f @@ # & /@ data

{0,1,1,2,1,2,2,3}


Bob Hanlon

---- hoffmannick <hoffmannick at gmail.com> wrote: 
> Can anyone help me solve the following problem?
> 
> I have a function of 3 variables, let's say
> f[a_, b_, c_] = a + b + c
> 
> Now I need to evaluate the function at some given points.  To evaluate
> at a single point I would do
> f[0,0,1]
> 
> For the point (0,0,1)
> 
> Now here is the main question.
> I need to evaluate this function at the points (0,0,0) through (1,1,1)
> That would be the points:
> 0,0,0
> 0,0,1
> 0,1,0
> 0,1,1
> 1,0,0
> 1,0,1
> 1,1,0
> 1,1,1
> 
> I'm testing these for approx 32 different functions.  Is there an easy
> way that I can define the function and then have it test all the
> points for me?  It will always be those finite points listed above.
> 
> I looked into the mathematica documentation and it said how to do this
> with a function of a single variable, but it didn't say how to do it a
> function of more than one variable.
> 
> I really appreciate your help
> 
> 



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