Message-ID: <971536df0602041034s6d4b00c3s7590a93fbbc47ec9@mail.gmail.com>
Date: 2006-02-04T18:34:07Z
From: Gabor Grothendieck
Subject: functional programming question
In-Reply-To: <43E4F232.6090209@univie.ac.at>
See:
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/54896.html
On 2/4/06, Erich Neuwirth <erich.neuwirth at univie.ac.at> wrote:
> Many functional programming languages have a metafunction
> which does the following:
> it has two arguments, a function and a list of objects, all of the same
> type.
> The argument function itself has two arguments of the same type as all
> the list objects, and the result of this function also is of the same type.
> then
> metafunction(f,list(x1,x2,....xn)) produces
> f(x1,f(x2,f(x3,....,f(xn-1,xn)))..)
> Does R have such a function, or do I need to code it myself?
> In Scheme (Mathematica), this metafunction is called fold (Fold).
>
>
> --
> Erich Neuwirth, University of Vienna
> Faculty of Computer Science
> Computer Supported Didactics Working Group
> Visit our SunSITE at http://sunsite.univie.ac.at
> Phone: +43-1-4277-39464 Fax: +43-1-4277-39459
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
>