> Is it possible to add a key, triggering a resize of the dict, then remove one, and continue iterating through the old (deallocated) memory?
You can add and remove keys between calling next which would resize the dictionary; however, it will not iterate through uninitialized memory. The dictiter holds the current index and each time next is called it goes directly to ma_keys->dk_entries[saved_index] or ma_values[saved_index] On Tue, Dec 13, 2016 at 12:55 PM, Chris Angelico <ros...@gmail.com> wrote: > On Wed, Dec 14, 2016 at 4:48 AM, Guido van Rossum <gu...@python.org> > wrote: > > IIUC the private version gets updated every time the dict gets modified > -- > > but what we need here should only trigger when a key is added or removed, > > not when a value is updated. > > Is it possible to add a key, triggering a resize of the dict, then > remove one, and continue iterating through the old (deallocated) > memory? If so, that could potentially cause a crash. > > ChrisA > _______________________________________________ > 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/ > joe%40quantopian.com >
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