[R] Two names of a function

[Göran Broström]

On Wed, 14 May 2003, Ko-Kang Kevin Wang wrote:

> Do you mean something like:
> > sq <- function(x) x^2
> > sq(2)
> [1] 4
> > sq(9)
> [1] 81
> > sq1 <- sq
> > sq1(9)
> [1] 81

No, you are taking a copy of the function. I'm thinking in the lines of

1. an 'alias' mechanism: sq1 <- function() alias(sq), or

2. sq1 calling sq: sq1 <- function(x) sq(x)

but 2. must be done more sophisticated. I foresee problems with 
environments and passing the argument list.

Göran

> 
> 
> On Wed, 14 May 2003, Göran Broström wrote:
> 
> > Date: Wed, 14 May 2003 09:59:13 +0200 (CEST)
> > From: Göran Broström <gb at stat.umu.se>
> > To: R-help <r-help at stat.math.ethz.ch>
> > Subject: [R] Two names of a function
> > 
> > 
> > Is it possible to let a function be known under two names without having
> > two identical copies of the function body? 
> > 
> > ---
> >  Göran Broström                    tel: +46 90 786 5223
> >  Department of Statistics          fax: +46 90 786 6614
> >  Umeå University                   http://www.stat.umu.se/egna/gb/
> >  SE-90187 Umeå, Sweden             e-mail: gb at stat.umu.se
> > 
> > ______________________________________________
> > R-help at stat.math.ethz.ch mailing list
> > https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> > 
> 
> 

-- 
---
 Göran Broström                    tel: +46 90 786 5223
 Department of Statistics          fax: +46 90 786 6614
 Umeå University                   http://www.stat.umu.se/egna/gb/
 SE-90187 Umeå, Sweden             e-mail: gb at stat.umu.se