Re: Questions about functions.
- To: mathgroup@smc.vnet.net
- Subject: [mg11814] Re: [mg11801] Questions about functions.
- From: "Jürgen Tischer" <jtischer@pitagoras.univalle.edu.co>
- Date: Tue, 31 Mar 1998 02:28:32 -0500
Hola Jaime,
Q1: f[x___]:={x} (I made it three _ to include the case of an empty
sequence.
Q2: I think (I hope) you want something different of what I understood.
The (I admit stupid) answer is s[e_,f_]:=(s+e)(s+f). That will do what
you asked for, but I can't imagine what it could be good for. So maybe
you would like to reformulate your question?
J|rgen
-----Original Message-----
From: El alchemista <jaimeco@pecos.rc.arizona.edu> To:
mathgroup@smc.vnet.net
Subject: [mg11814] [mg11801] Questions about functions.
>I will appreciate your input to these two questions.
>
>1 - How can I convert the sequence of all arguments of a function into
>a list ? In vain I tried f[x__] := List @@ x
>
>
>2 - How can I make functions which use their own names , for instance so
>that s[e,f] for some symbol s and all expressions e , f
>becomes (s+e)(s+f) ?
>
>
>Many thanks
>
>jaime Combariza
>jaimeco@arizona.edu
>
>