[R] strange behaviour of "POSIXlt" "POSIXt" object

[R. Michael Weylandt <michael.weylandt@gmail.com>]

It means to interpret the literal as an integer rather than a double. 

Michael

On Mar 5, 2012, at 9:41 AM, ikuzar <razuki at hotmail.fr> wrote:

> Hi, 
> I'd like to know what "L" means in "1L" in the instruction below:
> for(i in 1:20){ z$mday <- z$mday + 1L ; cat(is.na(z), ": ");print(z)} 
> 
> The result :
> FALSE : [1] "2009-02-26 06:30:00"
> FALSE : [1] "2009-02-27 06:30:00"
> FALSE : [1] "2009-02-28 06:30:00"
> FALSE : [1] "2009-03-01 06:30:00"
> FALSE : [1] "2009-03-02 06:30:00"
> FALSE : [1] "2009-03-03 06:30:00"
> FALSE : [1] "2009-03-04 06:30:00"
> FALSE : [1] "2009-03-05 06:30:00"
> FALSE : [1] "2009-03-06 06:30:00"
> FALSE : [1] "2009-03-07 06:30:00"
> FALSE : [1] "2009-03-08 06:30:00"
> FALSE : [1] "2009-03-09 06:30:00"
> FALSE : [1] "2009-03-10 06:30:00"
> FALSE : [1] "2009-03-11 06:30:00"
> FALSE : [1] "2009-03-12 06:30:00"
> FALSE : [1] "2009-03-13 06:30:00"
> FALSE : [1] "2009-03-14 06:30:00"
> FALSE : [1] "2009-03-15 06:30:00"
> FALSE : [1] "2009-03-16 06:30:00"
> FALSE : [1] "2009-03-17 06:30:00"
> 
> --
> View this message in context: http://r.789695.n4.nabble.com/strange-behaviour-of-POSIXlt-POSIXt-object-tp4418115p4446305.html
> Sent from the R help mailing list archive at Nabble.com.
> 
> ______________________________________________
> R-help at 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.