Re: Re: newbie question on functions

*To*: mathgroup at smc.vnet.net*Subject*: [mg51822] Re: [mg51794] Re: newbie question on functions*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Wed, 3 Nov 2004 01:23:45 -0500 (EST)*Reply-to*: hanlonr at cox.net*Sender*: owner-wri-mathgroup at wolfram.com

AppendTo and PrependTo do change their original lists alpha = {a,b,c}; AppendTo[alpha, d]; alpha {a, b, c, d} PrependTo[alpha, a]; alpha {a, a, b, c, d} Bob Hanlon > > From: AES/newspost <siegman at stanford.edu> To: mathgroup at smc.vnet.net > Date: 2004/11/02 Tue AM 02:05:23 EST > To: mathgroup at smc.vnet.net > Subject: [mg51822] [mg51794] Re: newbie question on functions > > In article <cm4r7j$6lm$1 at smc.vnet.net>, > David Bailey <dave at Remove_Thisdbailey.co.uk> wrote: > > > Yes, of course you can save the result of a calculation. For example: > > > > result=intensity[4.,5.] > > > For the original "newbie" poster: > > For newbies, or less expert users like me, it's easy to think that > something like > > AppendTo[list, expr] > > is a "command" that will do what it says: append expr to list. Takes a > few bad experiences to realize that you actually have to say > > list = AppendTo[list,expr] > > Same general principle applies more broadly. > > Bob Hanlon Chantilly, VA