[R] "function" as variable name - probably better error message

Rainer M Krug Rainer at krugs.de
Thu Apr 16 12:19:25 CEST 2015


The following code works as expected:

list(plot="Not any more!")

| > plot <- "Not any more!")
| [1] "Not any more!"

But for this I get an error:

| > function <- "Not any more!"
| Error: unexpected assignment in "function <-"

The error message is quite cryptic and does not help much further. Would
it be possible to provide a more useful error message in this case that
(presumably) "function" is a reserved word?

Along the same lines - is there a list of reserved words which can not
be used in R as variable names (not even as elements in a a list())?

This is not a huge problem, but it cost me a few minutes of figuring



Rainer M. Krug
email: Rainer<at>krugs<dot>de
PGP: 0x0F52F982
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