From: ronggui <ronggui.huang_at_gmail.com>

Date: Sun, 27 May 2007 11:47:49 +0800

Date: Sun, 27 May 2007 11:47:49 +0800

The help page of eval says: The 'evalq' form is equivalent to
'eval(quote(expr), ...)'. But the following is not equivalent. Can
anyone give me some explaination? Thanks very much.

*>
**> f1 <- function(x,digits=5) lapply(x, f2)
**> f2 <- function(x) evalq(print(x+1,digits=digits),list(x=x),parent.frame(2))
**> f1(list(x1=1))
*

Error in print.default(x + 1, digits = digits) :
object "digits" not found

-- Ronggui Huang Department of Sociology Fudan University, Shanghai, China ______________________________________________ R-help_at_stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.Received on Sun 27 May 2007 - 03:52:07 GMT

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