[R] Question on closure (lexical scoping) and encapsulation

Thomas Lumley thomas at biostat.washington.edu
Wed Jun 14 17:41:09 CEST 2000

On Wed, 14 Jun 2000, Duncan Murdoch wrote:

> It would also probably make sense to base the object oriented aspects
> of S on environments rather than on naming conventions and attributes,
> but it's probably too late to do that now.

It may help to view S classes as analogous to Java interfaces rather than
to classes in traditional object-oriented languages.  Giving something the
"lm" class (possibly with other classes) is not necessarily a statement
about inheritance ("glm" isn't really a kind of "lm"), but should be a
guarantee that lm methods will do something sensible with the object. 


Thomas Lumley
Assistant Professor, Biostatistics
University of Washington, Seattle

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