[Python-Dev] Add a frozendict builtin type
Steven D'Aprano
steve at pearwood.info
Thu Mar 1 01:36:15 CET 2012
Raymond Hettinger wrote:
> On Feb 29, 2012, at 3:52 PM, Victor Stinner wrote:
>
>> I don't know if hardening Python is a compelling argument to add a new
>> builtin type.
>
> It isn't.
>
> Builtins are for general purpose use.
> It is not something most people should use;
> however, if it is a builtin, people will be drawn
> to frozendicts like moths to a flame.
> The tuple-as-frozenlist anti-pattern shows
> what we're up against.
Perhaps I'm a little slow today, but I don't get this. Could you elaborate on
tuple-as-frozenlist anti-pattern please?
i.e. what it is, why it is an anti-pattern, and examples of it in real life?
--
Steven
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