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Re: Applying a list of functions to a list of arguments


D M Yates wrote:
> I have a list of functions, and a list of arguments:
> 
> For example,
> f = {f1, f2, f3}
> a = {a1,a2,a3}
> 
> I would like to return
> {f1[a1],f2[a2],f3[a3]}
> 
> I thought this should easy, but am stumped. Obviously the lists are of 
> equal, but arbitrary length, and the arguments may or may not be atomic 
> expressions. In my particular case, the arguments are likely to be 
> combinations of Real, and List[Real,...], but I hope this is 
> irrelevant.
> 
> Any suggestions?
> 
> Many thanks,
> 
> Derek Yates
> 

Derek,

MapThread is your friend here:


f = {f1, f2, f3}
a = {a1, a2, a3}

In[3]:=
MapThread[#1[#2] & , {f, a}]

Out[3]=
{f1[a1], f2[a2], f3[a3]}

Actually this is an example from MapThread[] help.

Torsten


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