On 12/06/2010 10:46 PM, Laurent Gautier wrote:
> On 12/6/10 10:26 PM, Laurent Gautier wrote:
>> On 12/6/10 7:17 PM, Moritz Beber wrote:
> (...)
>>> I found NULL in rpy2.robjects.constants but its type is>> 'rpy2.rinterface.Sexp'> whereas the returned NULL value has a type of
>>> . Unfortunately, ca
On 12/6/10 10:26 PM, Laurent Gautier wrote:
> On 12/6/10 7:17 PM, Moritz Beber wrote:
(...)
>> I found NULL in rpy2.robjects.constants but its type is> 'rpy2.rinterface.Sexp'> whereas the returned NULL value has a type of
>> . Unfortunately, calling bool on
>> the returned RObject evaluates to True
On 12/6/10 7:17 PM, Moritz Beber wrote:
> Dear list members,
>
> in order to make sure that the return value of an rpy2 function is not
> NULL, I need access to the R NULL singleton to perform the comparison.
> In the new features section
> http://rpy.sourceforge.net/rpy2/doc-2.2/html/changes.html,
Dear list members,
in order to make sure that the return value of an rpy2 function is not
NULL, I need access to the R NULL singleton to perform the comparison.
In the new features section
http://rpy.sourceforge.net/rpy2/doc-2.2/html/changes.html, I find
exactly what I want: rpy2.rinterface.NULL.
