Martin v. Löwis added the comment: ISTM that a dictionary is not the proper data structure for an instruction list. The support for the Mapping interface is not needed at all (AFAICT).
It's possible to make a list implementation with O(1) insert_after, using the same strategy that OrderedDict uses (i.e. maintain a mapping from value to link element). ---------- nosy: +loewis _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue22097> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
