On 7/27/2014 10:34 AM, William Dunlap wrote:
This is a real hack, but you can redefine return in your function:
f <- function() {
+ return("early return")
+ "last value in function"
+ }
f()
[1] "early return"
f <- function() {
+ return <- function(x)x
+ return("early return")
+ "last value in function"
+ }
f()
[1] "last value in function"
IMO, well written functions do not have return statements in them. They
are the equivalent of goto statements.
Is that a fortune or something hotly contested?
I can understand the sentiment, and I'd like to know if there is
research behind this? I understand that "goto" was eliminated from
modern languages precisely because research indicated it was a major
source of problems. This may seem related, but I'd like to see the data
if anyone knows of such. I've used "return" in the middle of functions
to avoid an extra "else" layer after an "if". This may not be smart.
I'd like to know how stupid it is ;-)
Thanks for the comment.
Spencer
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Sun, Jul 27, 2014 at 6:41 AM, super <desolato...@163.com> wrote:
Suppose that I had a function as below:
f<-function() {
return(1)
}
i want to change the body of f to the form like this:
f<-function(){
1
function() {}
}
How can i do the task using body(f) or something else solutions?
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org 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.
--
Spencer Graves, PE, PhD
President and Chief Technology Officer
Structure Inspection and Monitoring, Inc.
751 Emerson Ct.
San José, CA 95126
ph: 408-655-4567
web: www.structuremonitoring.com
______________________________________________
R-help@r-project.org 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.
