R help - Jul 2005 - Multiple assignments in one statement

Is this possible?

For instance, I have a function that returns a vector length 3. In one 
statement I'd like to assign each element of the vector to different 
variables. Syntactically, I hoped this would work:

c(x,y,z) <- myfun();

Thanks,
-- 
Jeffrey Horner       Computer Systems Analyst         School of Medicine
615-322-8606         Department of Biostatistics   Vanderbilt University

Yes and no. Your function doesn't work because c() is a function and R is
call-by-value, so c(x,y,z) is just a value, like 7. 

You could use lists like this:
> l <- list(x=NULL,y=NULL,z=NULL)
> l[c("x","y","z")] <- 1:3
> l
$x
[1] 1

$y
[1] 2

$z
[1] 3

That, together with attaching lists (help(attach)), might give you the
effect you want.

Reid Huntsinger



-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Jeffrey Horner
Sent: Friday, July 08, 2005 3:45 PM
To: r-help at stat.math.ethz.ch
Subject: [R] Multiple assignments in one statement


Is this possible?

For instance, I have a function that returns a vector length 3. In one 
statement I'd like to assign each element of the vector to different 
variables. Syntactically, I hoped this would work:

c(x,y,z) <- myfun();

Thanks,
-- 
Jeffrey Horner       Computer Systems Analyst         School of Medicine
615-322-8606         Department of Biostatistics   Vanderbilt University

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On 7/8/05, Jeffrey Horner <jeff.horner at vanderbilt.edu>
wrote:
> Is this possible?
> 
> For instance, I have a function that returns a vector length 3. In one
> statement I'd like to assign each element of the vector to different
> variables. Syntactically, I hoped this would work:
> 
> c(x,y,z) <- myfun();
> 
> Thanks,
> --
> Jeffrey Horner       Computer Systems Analyst         School of Medicine
> 615-322-8606         Department of Biostatistics   Vanderbilt University
> 
> ______________________________________________
> 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
>