[R] Output from file.info()$mtime
fisher at plessthan.com
Fri Aug 8 15:58:55 CEST 2014
You asked “how that managed to give TRUE? (I apologize for the mangled quotes — the error occurred with plain quotes).
All that I can say is that R versions <= 3.1.0 allowed my code to execute without error. The bug report appears to address the issue. I typically review Dalgaard’s list of changes in each new version — it does not contain anything about this bug fix.
Dennis Fisher MD
P < (The "P Less Than" Company)
Phone: 1-866-PLessThan (1-866-753-7784)
Fax: 1-866-PLessThan (1-866-753-7784)
On Aug 8, 2014, at 1:54 AM, Prof Brian Ripley <ripley at stats.ox.ac.uk> wrote:
> On 07/08/2014 23:37, Fisher Dennis wrote:
>> R 3.1.1
>> OS X (and Windows)
>> I have some code that manages files. Previously (as late as 3.1.0), the command:
>> file.info(FILENAME)$mtime == “”
>> yielded T/F
>> Now, it triggers an error:
>> Error in as.POSIXlt.character(x, tz, ...) :
>> character string is not in a standard unambiguous format
>> I looked through Peter Dalgaard’s list of changes in 3.1.1 and I cannot find anything that would explain the change between versions. I have fixed the problem. However, I am concerned that other problems may be lurking (i.e., the changes might affect other commands).
>> Of note, I ran:
>> in both versions of R and the results did not differ
>> Can anyone explain what changed so that I can search my code efficiently?
> Can you explain how that managed to give TRUE (sic)? It was always a POSIXct timestamp, and as such is never equal "" (assuming that your mail client mangled ASCII double quotes).
> I believe the relevant report is https://bugs.r-project.org/bugzilla/show_bug.cgi?id=15829
>> Thanks in advance.
>> Dennis Fisher MD
>> P < (The "P Less Than" Company)
>> Phone: 1-866-PLessThan (1-866-753-7784)
>> Fax: 1-866-PLessThan (1-866-753-7784)
More information about the R-help