[Rd] Recursive objects

[Hadley Wickham]

Thanks to you both for reminding me about those important recursive objects!
Hadley

On Wed, May 4, 2011 at 7:49 AM, peter dalgaard <PDalgd at gmail.com> wrote:
>
> On May 4, 2011, at 14:35 , Kenn Konstabel wrote:
>
>> On Wed, May 4, 2011 at 3:26 PM, Hadley Wickham <hadley at rice.edu> wrote:
>>> Hi all,
>>>
>>> Does anyone have a comprehensive list of recursive-type objects in R?
>>> is.recursive defines them as by exclusion: "most types of objects are
>>> regarded as recursive, except for  vector types, ‘NULL’ and symbols
>>> (as given by ‘as.name’)."  I think this that means recursive objects
>>> are:
>>>
>>>  * lists
>>>  * pairlists
>>>  * calls
>>>  * expressions
>>
>> is.recursive(environment())
>> # [1] TRUE
>
>
> Closures:
>
>> is.recursive(ls)
> [1] TRUE
>
>
>>
>>>
>>> Did I miss anything?
>>>
>>> Hadley
>>>
>>> --
>>> Assistant Professor / Dobelman Family Junior Chair
>>> Department of Statistics / Rice University
>>> http://had.co.nz/
>>>
>>> ______________________________________________
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>>>
>>
>> ______________________________________________
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>
> --
> Peter Dalgaard
> Center for Statistics, Copenhagen Business School
> Solbjerg Plads 3, 2000 Frederiksberg, Denmark
> Phone: (+45)38153501
> Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com
>
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>



-- 
Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/