Re: simple question
- To: mathgroup at smc.vnet.net
- Subject: [mg99685] Re: simple question
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Mon, 11 May 2009 06:24:01 -0400 (EDT)
- References: <gu660n$9jh$1@smc.vnet.net>
Hi,
thank you for this almost complete example.
NestWhile[f,startinglist,UnsameQ[{#1[[1]],#2[[1]]}&,2]
may work or not.
Regards
Jens
Francisco Gutierrez wrote:
> Dear Sirs:
> I have a function whose output is of the form {{a,b,c},{d,e,f},k}
>
> That is, a list of length 3, of which the first two parts are lists and the last part is a number
>
> Now, I want to iterate it, with the following termination criterion: stop if the first two parts of the output are identical in two successive runs.
>
> The intuitive (or naively intuitive if you want) way of attacking the problem, I think, is the following:
>
> NestWhile[f,startinglist,UnsameQ[{#[[1]],#[[2]]}&,2]
>
> But it does not work.
>
> What is the solution?
> Fg
>