Martin v. Löwis added the comment: Am 02.09.2012 16:21, schrieb Alexander Belopolsky: > I have refrained from voting because in my line of work buffers or > memoryviews deal with large objects that rarely serve as dictionary > keys. As a result, I have zero experince with hashing of buffers. > This observation supports the current consensus to limit hashing to > 1d and 0d cases. My only concern is that with hash(m) == > hash(m.tobytes()) implementing multidimensional restriction will > require artificial if ndim > 1 check and an extra sentence in the > docs while not simplifying anything.
As for the "not simplifying argument": if hashing was restricted to contiguous bytes, then the implementation would certainly be simplified quite a bit: currently, if it's not contiguous, it needs to make a separate copy and hash that. This code could go away if hashing would only work for true memory "blocks". ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue15814> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
