After reading the 'Inferno-ish R' the first thing that comes to mind is
that R is very much like S, but it's still different (R is not S), so it
can't contain the S as a programming language, as the manual says. Or I'm
wrong?


2012/11/5 Patrick Burns <pburns@pburns.seanet.com>

> There is a bit of history in:
>
> http://www.portfolioprobe.com/**2012/05/31/inferno-ish-r/<http://www.portfolioprobe.com/2012/05/31/inferno-ish-r/>
>
> Pat
>
>
>
> On 05/11/2012 17:09, R. Michael Weylandt wrote:
>
>> On Mon, Nov 5, 2012 at 4:43 PM, Iurie Malai <iurie.malai@gmail.com>
>> wrote:
>>
>>> In the "Introduction and preliminaries" the "An Introduction to R" manual
>>> says about R: "... Among other things it has ... a well developed, simple
>>> and effective programming language (Called 'S') ... ". Now I'm a little
>>> confused. This means that language S is a component part of R? And S is
>>> not
>>> free? But R is free? Or the mentioned S is only "a free implementation"
>>> of
>>> the "true S"? Can anybody explain this? I want to know.
>>>
>>> Thank you!
>>>
>>>
>> 'S' is a language, invented at Bell Labs
>> (http://en.wikipedia.org/wiki/**S_(programming_language)<http://en.wikipedia.org/wiki/S_(programming_language)>)
>> which has two
>> major implementations. S-Plus, which is a commercial product, and R,
>> which you know well.
>>
>> R was originally quite like S/S-Plus, but it's changed over time and
>> diverged aways and now I believe the R README says R is 'not unlike'
>> S.
>>
>> Consider, e.g., Python, which is a language (specified in
>> documentation) with multiple implementations: CPython, PyPy, Jython,
>> IronPython, etc. If R and S-Plus had identical functionality they
>> would be different concrete realizations of the abstract 'S' language,
>> but they're more than slightly different in practice.
>>
>> Not sure if that helps at all....
>>
>> Michael
>>
>> ______________________________**________________
>> R-help@r-project.org mailing list
>> https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/mailman/listinfo/r-help>
>> PLEASE do read the posting guide http://www.R-project.org/**
>> posting-guide.html <http://www.R-project.org/posting-guide.html>
>> and provide commented, minimal, self-contained, reproducible code.
>>
>>
> --
> Patrick Burns
> pburns@pburns.seanet.com
> twitter: @portfolioprobe
> http://www.portfolioprobe.com/**blog <http://www.portfolioprobe.com/blog>
> http://www.burns-stat.com
> (home of 'Some hints for the R beginner'
> and 'The R Inferno')
>



-- 
Iurie Malai

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