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Topic: Define function using lists or tables
Replies: 1   Last Post: Jul 3, 2013 6:04 PM

 Bob Hanlon Posts: 906 Registered: 10/29/11
Re: Define function using lists or tables
Posted: Jul 3, 2013 6:04 PM

data = Partition[CharacterRange["a", "z"], 2];

Clear[f]

Set[f[#[[1]]], #[[2]]] & /@ data;

?f

Bob Hanlon

On Wed, Jul 3, 2013 at 4:58 AM, Joaquim Nogueira <jen@fct.unl.pt> wrote:

> Hello. Possibly this is a very simple question.
>
> Is there a way to define a function over a (BIG) list of ordered pairs? I
> mean, suppose that I have a list, created using a Table command or
> something like that, of the form [{a,b},{c,d},etc.] such that, after naming
> it f, say, f = [{a,b},{c,d},etc.], then, afterwards, whenever there is a
> command such that one needs to compute f[a] (or f[c]), the program
> immediately replaces f[a] by b,and f[c] by d?
>
> Thank you.
>
>