> > On Fri, 2003-11-21 at 09:57, Richard Fateman wrote:
> > > R has a larger installed user base than Matlab/Octave?
> > > That is pretty surprising to me... are there user
> > > statistics somewhere? Is this the Xlisp-stat system
> > > underneath it? Can you provide a URL for it?
About R and Lisp, the source code does not contain any Lisp
now, and from some remarks by one of the authors [1]
it appears it never did. However, some concepts from Scheme
(a dialect of Lisp) were borrowed. In particular R has lexical
scope and uses S-expressions as internal data structures.
I believe it's accurate to say R has Scheme-like internals,
with S syntax, implemented in C.
By the way, R has some support for symbolic manipulation --
there are functions to construct expressions and evaluate
them, and to compute derivatives symbolically.
best,
Robert Dodier
[1] http://cran.r-project.org/doc/html/interface98-paper/paper_1.html
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