Re: Define function using lists or tables

*To*: mathgroup at smc.vnet.net*Subject*: [mg131421] Re: Define function using lists or tables*From*: Bob Hanlon <hanlonr357 at gmail.com>*Date*: Wed, 3 Jul 2013 22:02:42 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-outx@smc.vnet.net*Delivered-to*: mathgroup-newsendx@smc.vnet.net*References*: <20130703085846.4E7676A7B@smc.vnet.net>

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 at 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. > >

**References**:**Define function using lists or tables***From:*Joaquim Nogueira <jen@fct.unl.pt>