On Thu, 26 Feb 2015, William Dunlap wrote:

...
It also seems to cause problems with some built-in functions:
newlapply <- function (X, FUN, ...) 
{
    FUN <- match.fun(FUN)
    if (!is.list(X)) 
        X <- as.list(X)
    rval <- vector("list", length(X))
    for (i in seq(along = X)) {
        rval[i] <- list(local({
            i <- i
            FUN(X[[i]], ...)
        }))
    }
    names(rval) <- names(X)
    return(rval)
}
newlapply(1:2,log)
#Error in FUN(X[[i]], ...) : non-numeric argument to mathematical function

This seems to be a bug in log() -- this takes local() out of the issue:

f <- function(x, ...) {
+     g <- function()
+         log(x, ...)
+     g()
+ }
f(1)
Error in log(x, ...) : non-numeric argument to mathematical function

It's not following the ... properly for some reason.

Best,

luke

--
Luke Tierney
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa                  Phone:             319-335-3386
Department of Statistics and        Fax:               319-335-3017
   Actuarial Science
241 Schaeffer Hall                  email:   luke-tier...@uiowa.edu
Iowa City, IA 52242                 WWW:  http://www.stat.uiowa.edu
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