Re: [R] Output args?

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Subject: Re: [R] Output args?
From: Ben Bolker (ben@zoo.ufl.edu)
Date: Fri 09 Jun 2000 - 22:48:26 EST 

Message-ID: <Pine.LNX.4.10.10006090840580.16783-100000@bolker.zoo.ufl.edu>

  You may want to look at the help for "assign", or, as a shortcut, try
the "<<-" version of assignment:

> foo <- function() { a <- 1 }
> foo()
> a
Error: Object "a" not found
> foo <- function() { a <<- 1 }
> foo()
> a
[1] 1

  Note that this kind of question will eventually lead you into the thick
of issues like environments, scoping, closures, etc. ... but for simple
global assignment I think "<<-" is what you need.

> I find out by trial and error later that you can do the following.
>
> foo<-function(x,y,z){
> ...
> abc<-list(a=x,b=y,c=z)
> }
>
> and call
>
> foo(1,2,3)
>
> there is nothing outputted to the console which is close to what I ask in
> the first part of my query. I'll continue investigating to learn if it's
> possible to export or whatever is the right term, the variables I want so
> that there available for future use at the top level.
>
> Regards
>
> Yves Gauvreau
>
> 

-- 
Ben Bolker                                  bolker@zoo.ufl.edu
Zoology Department, University of Florida   http://www.zoo.ufl.edu/bolker
318 Carr Hall/Box 118525                    tel: (352) 392-5697
Gainesville, FL 32611-8525                  fax: (352) 392-3704

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