Robert,
The function always returns a value, but it doesn't print the value.
Look at the source code for dir.create(), then read ?invisible.
Best,
Josh
--
http://www.fosstrading.com
On Sat, May 2, 2009 at 7:41 AM, Robert Hijmans wrote:
> Thanks, I am not sure if this is desirable (a function
Thanks, I am not sure if this is desirable (a function returning a
value only when 'asked' to do so), but I am intrigued. How can one put
such behaviour in an R function?
Robert
On Sat, May 2, 2009 at 8:27 PM, Sundar Dorai-Raj wrote:
> Not a bug. Try:
>
> print(dir.create("foo"))
>
> or
>
> foo
However, there is a bug in ?dir.create:
"'dir.create' indicates failure if the dirwctory already exiss."
> sessionInfo()
R version 2.9.0 (2009-04-17)
i386-apple-darwin8.11.1
locale:
en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices ut
Not a bug. Try:
print(dir.create("foo"))
or
foo <- dir.create("foo")
foo
HTH,
--sundar
On Sat, May 2, 2009 at 5:10 AM, wrote:
> ?dir.create (part of the base package) says that:
> "dir.create and Sys.chmod return a logical vector indicating which
> operation succeeded for each of the files
?dir.create (part of the base package) says that:
"dir.create and Sys.chmod return a logical vector indicating which
operation succeeded for each of the files attempted"
However, on my system it returns nothing (whether successful or not):
> dir.create(":::@!#!::")
> dir.create('b')
> session
