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List:       r-devel
Subject:    Re: [Rd] R-3.2.4 Mac/Linux different in < on characters
From:       David Winsemius <dwinsemius () comcast ! net>
Date:       2016-03-12 5:50:28
Message-ID: 3ED54186-ACFC-4071-BE1C-778034F81DF1 () comcast ! net
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> On Mar 11, 2016, at 6:52 PM, Mick Jordan <mick.jordan@oracle.com> wrote:
> 
> Linux:
> > x<-c("0","1");y<-c("a","-1"); x<y
> [1] TRUE TRUE
> 
> Mac:
> 
> x<-c("0","1");y<-c("a","-1"); x<y
> [1]  TRUE FALSE
> 

On a Mac (and noting the the documentation [somewhere that I cannot find right now] \
warns us the the collation sequence for characters is OS dependent):

require(R.oo)
charToInt("-")
#[1] 45
charToInt("1")
#[1] 49

> 
> On both systems, LC_COLLATE/LC_CTYPE/LANG are set to en_US.UTF-8
> 
> In Java,FWIW, I get the Mac answer if I use String.compareTo and the Linux answer \
> if I use Collator.compareTo, but the result is consistent on Mac and Linux. 
> Mick Jordan
> 
> ______________________________________________
> R-devel@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel

David Winsemius
Alameda, CA, USA

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