John Maindonald <[EMAIL PROTECTED]> writes:
> I have found it helpful, in trying to explain (to myself and others) > what happens, to say that there is both a lexical stack and a call > stack. Is that a legitimate use of terminology? Slightly inaccurate I'd say. Both are actually trees, since multiple calls can have the same parent (due to eval() and lazy evaluation) and multiple environments can share the same enclosing environment. Since the trees are only connected by arrows pointing towards the root, they just *look like* a stack of frames when viewed from one of the branches. The only true stack structure is the context stack, which holds the information on where to return from the current call. -- O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
