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| Date | Tue, 12 Nov 2013 10:39:49 +0100 |
| Subject | Re: 'isimmutable' and 'ImmutableNester' |
| From | Frank-Rene Schäfer <fschaef@gmail.com> |
| To | random832@fastmail.us |
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> All you've done is proven that you can subvert things. By fiddling > with __hash__, __eq__, and so on, you can make sets and dicts behave > very oddly. Means nothing. To the contrary, it means everything about what 'isimmutable' could contribute: security against advert or inadvert insertion of mutable objects. 2013/11/11 <random832@fastmail.us>: >> A built-in function 'isimmutable()' shall tell efficiently whether the >> object >> of concern is mutable or not. > > What's the benefit over attempting to hash() the object? > > copy.deepcopy already has special case for int, string, and tuples > (including tuples that do and do not have mutable members) - could what > you need be accomplished by overriding __copy__ and __deepcopy__ in your > custom class to return itself if it is immutable?
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Re: 'isimmutable' and 'ImmutableNester' Frank-Rene Schäfer <fschaef@gmail.com> - 2013-11-12 10:39 +0100
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