I am also in agreement. On Fri, May 25, 2018, 13:49 Guido van Rossum <gu...@python.org> wrote:
> OK, +1 > > On Fri, May 25, 2018 at 10:26 AM, Raymond Hettinger < > raymond.hettin...@gmail.com> wrote: > >> >> >> > On May 25, 2018, at 9:32 AM, Antoine Pitrou <solip...@pitrou.net> >> wrote: >> > >> > It's worth nothing that OrderedDict already supports reversed(). >> > The argument could go both ways: >> > >> > 1. dict is similar to OrderedDict nowadays, so it should support >> > reversed() too; >> > >> > 2. you can use OrderedDict to signal explicitly that you care about >> > ordering; no need to add anything to dict. >> >> Those are both valid sentiments :-) >> >> My thought is that guaranteed insertion order for regular dicts is brand >> new, so it will take a while for the notion settle in and become part of >> everyday thinking about dicts. Once that happens, it is probably >> inevitable that use cases will emerge and that __reversed__ will get added >> at some point. The implementation seems straightforward and it isn't much >> of a conceptual leap to expect that a finite ordered collection would be >> reversible. >> >> Given that dicts now track insertion order, it seems reasonable to want >> to know the most recent insertions (i.e. looping over the most recently >> added tasks in a task dict). Other possible use cases will likely >> correspond to how we use the Unix tail command. >> >> If those use cases arise, it would be nice for __reversed__ to already be >> supported so that people won't be tempted to implement an ugly workaround >> using popitem() calls followed by reinsertions. >> >> >> Raymond >> >> . >> >> _______________________________________________ >> Python-Dev mailing list >> Python-Dev@python.org >> https://mail.python.org/mailman/listinfo/python-dev >> Unsubscribe: >> https://mail.python.org/mailman/options/python-dev/guido%40python.org >> > > > > -- > --Guido van Rossum (python.org/~guido) > _______________________________________________ > Python-Dev mailing list > Python-Dev@python.org > https://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: > https://mail.python.org/mailman/options/python-dev/ramseydsilva%40gmail.com >
_______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
