a = 9
b = 8
print (a)
print (b)
fa<-function(bS, aV) {
aV <<- 3
assign(bS,3,env = .GlobalEnv)
}
fa("b", a)
print (a) #9
print (b) #3 #only this call is ok
----- Original Message ----
From: Prof Brian Ripley <[EMAIL PROTECTED]>
To: biter bilen <[EMAIL PROTECTED]>
Cc: [email protected]
Sent: Wednesday, December 20, 2006 11:04:08 AM
Subject: Re: [R] call by reference
Can you tell us what you want to do with 'pass/call by reference'?
If you want an R function to alter its argument then it is possible
(KalmanLike is an example), but it should only be possible via C code.
And if you know enough to do that, you probably would not be asking (and
definitely not be asking on R-help rather than R-devel).
On Tue, 19 Dec 2006, biter bilen wrote:
> Can anyone help me about pass by reference of arguments in R functions?
>
> I have read about .Alias in base package however it is defunct and there
> is no replacement for it.
That's not a fair summary of the help entry for .Alias.
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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