In article , kj
wrote:
>
>standard OOP semantics
"...some experts might say a C++ program is not object-oriented without
inheritance and virtual functions. As one of the early Smalltalk
implementors myself, I can say they are full of themselves." --zconcept
--
Aahz ([email protected])
On Thu, 23 Dec 2010 01:41:08 +, kj wrote:
> In <[email protected]> Steven D'Aprano
> writes:
>
>>On Wed, 22 Dec 2010 14:20:51 +, kj wrote:
>
>>> Here's another example, fresh from today's crop of wonders:
>>>
>>> (v. 2.7.0)
>> from collections impo
In <[email protected]> Steven D'Aprano
writes:
>On Wed, 22 Dec 2010 14:20:51 +, kj wrote:
>> Here's another example, fresh from today's crop of wonders:
>>
>> (v. 2.7.0)
> from collections import Mapping
> issubclass(dict, Mapping)
>> True
> di
On Wed, 22 Dec 2010 14:20:51 +, kj wrote:
> Here's another example, fresh from today's crop of wonders:
>
> (v. 2.7.0)
from collections import Mapping
issubclass(dict, Mapping)
> True
dict.__bases__
> (,)
[issubclass(b, Mapping) for b in dict.__bases__]
> [False]
>
>
> S
On 12/22/2010 9:20 AM, kj wrote:
from collections import Mapping
Documented as an *ABSTRACT* base class. ABCs were added in 3.0 and
backparted to 2.7. One can be quite competant in Python completely
ignoring ABCs.
issubclass(dict, Mapping)
True
Yes, dict is a concrete Mapping class. I
kj wrote:
In a message (<[email protected]>)
on a different thread, Steven D'Aprano tells me:
I suspect you're trying to make this more complicated than it actually
is. You keep finding little corner cases that expose implementation
details (such as the heap-t
On 12/22/2010 9:20 AM, kj wrote:
[...]
> I suspect this is another abstraction leak ("dict is *supposed* to
> be a Python class like all others, but in fact it's not *really*.
> You see, once upon a time...").
>
So your suspicions are to be placed above the knowledge of those who
really do underst
On Wed, 22 Dec 2010 09:35:48 -0500
Adam Tauno Williams wrote:
>
> IMO, the "object model" isn't "leaky", it is simply "adhoc" and not
> really a "model" at all [write as many 800 page books as you want: if it
> walks like a zombie duck, smells like a zombie duck - it is still a
> zombie duck]. P
On Wed, 22 Dec 2010 14:20:51 + (UTC)
kj wrote:
>
> So dict is a subclass of Mapping, even though none of the bases of
> dict is either Mapping or a subclass of Mapping. Great.
>
> I suspect this is another abstraction leak ("dict is *supposed* to
> be a Python class like all others, but in
On Wed, 2010-12-22 at 14:20 +, kj wrote:
> In a message (<[email protected]>)
> on a different thread, Steven D'Aprano tells me:
> >I suspect you're trying to make this more complicated than it actually
> >is. You keep finding little corner cases that expose i
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