Hi,
there was a change concerning logical operations about a year ago:
https://github.com/wch/r-source/commit/9e19d3e3dd5f657b5cfefe562bdd7ede2e2b8786
It's related to a discussion on this list:
https://hypatia.math.ethz.ch/pipermail/r-devel/2016-September/073068.html
<https://hypatia.math.ethz.ch/pipermail/r-devel/2016-September/073068.html>
A change in logic.c:134 influences the result type of operations on zero-extent
raw vectors.
Old behavior:
> raw(1) & raw(1)
[1] 00
> raw(0) & raw(0)
raw(0)
New behavior:
> raw(1) & raw(1)
[1] 00
> raw(0) & raw(0)
logical(0)
I'm wondering whether the logical result type was intentional, because, to me,
the old behavior seems more consistent.
Best,
Lukas
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