[Python-ideas] Identity dicts and sets (original) (raw)

Serhiy Storchaka storchaka at gmail.com
Thu Jan 3 12:51:04 CET 2013


On 03.01.13 00:48, Terry Reedy wrote:

What do you mean by ordinal dict, as opposed to plain dict.

Sorry to have confused you. I mean "ordinary dict", same as "plain dict".

I don't know anything about pickling or sizeof, by if one uses user-defined classes for nodes and edges, equality is identity, so I don't see what would be gained.

If one uses a list, a dict, or user-defined class with defined eq, equality is not identity. Yes, you can use an identity dict with mutable types!



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