I've now added a simple implementation of hasName to R-devel and
R-patched. When I find the time, I'll go through the base packages and
change the !is.null(x$name) idiom to hasName. (All but "base", that
is: hasName is in utils, and it is better if base remains self-contained.)
If any bottlenecks turn up, I could make hasName faster by redoing it in
C code, but so far it is just R code very similar to the %in%
implementation.
Duncan Murdoch
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