[R] I don't understand this

Peter Dalgaard BSA p.dalgaard at biostat.ku.dk
Tue Sep 2 20:45:55 CEST 2003

Thomas Lumley <tlumley at u.washington.edu> writes:

> It may be the case that (expr)(expr)<-  is always invalid.

Semantically, maybe, but not syntactically. I.e. we can't catch it in
the parser, because "<-" is just another operator, and someone might
redefine it to something where that lhs makes sense (this is not quite
as crazy as it sounds; think about what is happening with other
operators inside model formulas).

   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907

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