[Python-Dev] PEP 3103: A Switch/Case Statement

Ka-Ping Yee python-dev at zesty.ca
Tue Jun 27 00:38:33 CEST 2006

On Mon, 26 Jun 2006, Guido van Rossum wrote:
> Most school I proponents (perhaps you're the only exception) have
> claimed that optimization is desirable, but added that it would be
> easy to add hash-based optimization. IMO it's not so easy in the light
> of various failure modes of hash(). (A possible solution would be to
> only use hashing if the expression's type is one of a small set of
> trusted builtins, and not a subclass; we can trust int.__hash__,
> str.__hash__ and a few others.)

That's a good idea!  At first glance, it seems like that could lead to
a plausible compromise.

-- ?!ng

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