Bart Willems wrote:
> James Stroud wrote:
>> ... It boils down to the fact that tuples are useless as a result
>> unless you know you really need them--and you never really NEED them.
>
> Could you clarify that for me? I use tuples *a lot* and I really *NEED*
> them - I'm building a lot of multi-tier reports where detail-level data
> is pulled out of a dictionary based on a composed key. It is impossible
> to build those dictionaries *without* using tuples.
"Impossible" is a strong word, as is "need" (especially when in all caps).
py> import md5
py> class HashedList(list):
... def __hash__(self):
... h = md5.new()
... for item in self:
... h.update(str(hash(item)))
... return int(h.hexdigest(), 16)
...
py> hl = HashedList('bob', 'carol', 'ted')
py> {hl:3}
{['bob', 'carol', 'ted']: 3}
Impossible? I wouldn't even say that this was all that difficult.
James
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