Message268992
`dict` subclasses can be hashable - it's a very bad idea, but not guarded against. If you were to do this, I'd suggest going the exception way, à la StopIteration.
I wonder how feasible it would be for e.g. dict.__setitem__ to check if a key already exists; it would be a special path that's not taken normally, but filling the mapping on call enables it, and it raises if it sees a duplicate. I think that inserting the check in there would reduce complexity and probably have a negligible impact on performance. I don't know if that's a good idea, just throwing this out here. |
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2016-06-21 13:15:19 | abarry | set | recipients:
+ abarry, serhiy.storchaka, Demur Rumed |
2016-06-21 13:15:19 | abarry | set | messageid: <1466514919.04.0.866435460311.issue27358@psf.upfronthosting.co.za> |
2016-06-21 13:15:19 | abarry | link | issue27358 messages |
2016-06-21 13:15:18 | abarry | create | |
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