Larry Hastings <[EMAIL PROTECTED]> wrote:
>
> Steven Bethard wrote:
> > On 2/20/07, Larry Hastings <[EMAIL PROTECTED]> wrote:
> >> I considered using __slots__, but that was gonna take too long.
> > Here's a simple implementation using __slots__:
>
> Thanks for steering me to it. However, your implementation and Mr.
> Hettinger's original NamedTuple both requires you to establish a type at
> the onset; with my prototype, you can create records ad-hoc as you can
> with dicts and tuples. I haven't found a lot of documentation on how to
> use __slots__, but I'm betting it wouldn't mesh well with my breezy
> ad-hoc records type.
If it helps, you can think of Steven's and Raymond's types as variations
of a C struct. They are fixed at type definition time, but that's more
or less the point.
Also, you can find more than you ever wanted to know about __slots__ by
searching on google for 'python __slots__' (without quotes), but it
would work *just fine* with your ad-hoc method, though one thing to note
with your method - you can't guarantee the order of the attributes as
they are being displayed. Your example would have the same issues as
dict does here:
>>> dict(b=1, a=2)
{'a': 2, 'b': 1}
Adding more attributes could further arbitrarily rearrange them.
- Josiah
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