- CompactListList::size() corresponds to the number of sub-lists
whereas globalIndex::size() corresponds to the totalSize().
This difference can lead to potential coding errors when switching
between pure addressing (eg globalIndex) and addressing with content
(eg, CompactListList).
Within the source tree, there are no longer any occurances of
globalIndex::size() but it is nonetheless unsafe to change its
meaning now. Instead provide a commonly named length() method that
corresponds to the natural length: ie, the number of offsets minus 1
(with guards).
- add CompactListList::writeMatrix for writing the compact contents
in an unpacked form (eg, for debugging) without actually needing to
unpack into storage.
- provide globalIndex::whichProcID() two-parameter version
with myProcNo as the first argument.
Symmetric with isLocal etc, useful when using a communicator
that is not worldComm.
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