For an external pointer
> xp
<pointer: (nil)>
one might expect all.equal to behave as for environments
> e = new.env()
> all.equal(e, e)
[1] TRUE
but it does not
> all.equal(xp, xp)
Error in unclass(target) : cannot unclass an external pointer
A solution is to dispatch to all.equal.language (?) in
src/library/base/R/all.equal.R:26
but this requires an is.expternalptr primitive.
In some respects, one might expect all.equal for environments to be more
thorough
e = new.env(); e[["a"]] = 1
all.equal(e, new.env()) ## expect FALSE, as in next line
all.equal(as.list(e), as.list(new.env()))
all.equal(new.env(), new.env()) ## TRUE; ok?
Martin
--
Computational Biology / Fred Hutchinson Cancer Research Center
1100 Fairview Ave. N.
PO Box 19024 Seattle, WA 98109
Location: Arnold Building M1 B861
Phone: (206) 667-2793
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