[R] How to get name of current function?

[Prof Brian Ripley]

On Tue, 20 Jan 2009, Johannes Graumann wrote:

> Hello,
>
> Is there a way to get the name of the function currently running?

It may not even have a name (you can write functions anonymously as 
'function(x) x+1' in function arguments).  I think rather the point is 
that you can get the name (if any) of the current call (and f1 and f2 
may be two names for the same function).

You can use match.call() or the sys* functions to help you.

x <- function() match.call()[[1]]

would probably be enough for your purposes.

> I'd like to have something like this
> 	x <- function(){
> 		myName <- getNameOfCurrentFunction
> 		cat(myName)
> 	}
> so that
> 	x()
> would result in
> 	"x"
>
> Thanks for any pointers,
>
> Joh


-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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