Hi all,
Came across an error in ?strsplit in the details section:
Details:
Arguments 'x' and 'split' will be coerced to character, so you
will see uses with 'split = NULL' to mean 'split = character(0)',
including in the examples below.
I caught myself trying to use strsplit() on a factor and the coercion on
'x' is not done.
According to the ONEWS file, the coercion on 'x' was removed in 1.8.0:
o strsplit(x, *) now preserves names() but won't work for
non-character `x' anymore {formerly used as.character(x),
destroying names(x)}.
The function prototype is:
> strsplit
function (x, split, extended = TRUE, fixed = FALSE, perl = FALSE)
.Internal(strsplit(x, as.character(split), as.logical(extended),
as.logical(fixed), as.logical(perl)))
<environment: namespace:base>
So 'split' is coerced, but not 'x'.
This is on:
Version 2.2.0 Patched (2005-10-27 r36070)
A proposed patch is:
--- strsplit.Rd 2005-10-06 07:50:36.000000000 -0500
+++ strsplit.rev.Rd 2005-10-28 11:51:08.000000000 -0500
@@ -37,7 +37,7 @@
contains the vector of splits of \code{x[i]}.
}
\details{
- Arguments \code{x} and \code{split} will be coerced to character, so
+ Argument \code{split} will be coerced to character, so
you will see uses with \code{split = NULL} to mean
\code{split = character(0)}, including in the examples below.
HTH,
Marc Schwartz
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