[R] Determining name of calling function.

[baptiste auguie]

Not answering your question, but just pointing out the example of

base::.NotYetImplemented()

essentially doing the same thing.

Best,

baptiste


2009/9/28 Rolf Turner <r.turner at auckland.ac.nz>:
>
> I have vague recollections of seeing this question discussed on r-help
> previously, but I can't find the relevant postings.
>
> I want to determine (from within a given function) the name of the function
> calling that given function.
>
> E.g. if I have a function foo() which calls a function bar(), and also
> a function clyde() which calls bar(), I want to have, in the code of bar(),
> an instruction which will return the character string "foo" if bar() was
> called from foo() and the string "clyde" if bar() was called from clyde().
>
> Without really understanding what I'm doing I cobbled together the
> following:
>
> fname <- as.character(sys.call(-1))[1]
>
> This ***seems*** to work, at least in simple test cases.
>
> But is it reliably robust?  Are there traps for young players that I am
> not seeing?
>
> My ``solution'' returns NA as the value of fname if bar() is called from the
> command line, rather than being called by foo() or clyde().  This is
> acceptable.
> I think ....
>
> Any avuncular advice from those younger and wiser than myself? :-)
>
>        cheers,
>
>                Rolf Turner
>
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