On Sun, Jun 27, 2010 at 6:47 PM, Shashwat Anand
wrote:
>
>>
>> The problem of the MRO isn't that it doesn't work, it's that it causes
>> behavior that is unintuitive. In my example, We would expect D.x to be
>> equal to C.x (since D inherits from C, and C overrides the x method).
>> However, this
> The problem of the MRO isn't that it doesn't work, it's that it causes
> behavior that is unintuitive. In my example, We would expect D.x to be
> equal to C.x (since D inherits from C, and C overrides the x method).
> However, this is not the case. This is what the problem is with the
> old MRO
On Sun, Jun 27, 2010 at 4:13 PM, Payal wrote:
> Hi Hugo,
>
> On Sun, Jun 27, 2010 at 01:27:37PM +0200, Hugo Arts wrote:
>> Here's my attempt. Consider this simple Diamond hierarchy:
> [...]
>> Now, with this diagram the following code probably doesn't do what you
>> expect:
>
> Actually, it does
Thanks a lot Eike for the code snippet. I got the idea now.
With warm regards,
-Payal
--
On Sat, Jun 26, 2010 at 10:41:59PM +0200, Eike Welk wrote:
> Hello Payal!
>
> On Saturday June 26 2010 19:05:16 Payal wrote:
> > Can we say that our own exception classes have only maybe a doc-string
> > a
Hi Steven,
Thanks a lot for patiently explaining the concepts. I uderstood most of
it.
With warm regards,
-Payal
--
On Sun, Jun 27, 2010 at 10:09:38AM +1000, Steven D'Aprano wrote:
> Probably not... it's quite complicated, which is why it's rare. I'll
> have a think about it and see what I ca
Hi Hugo,
On Sun, Jun 27, 2010 at 01:27:37PM +0200, Hugo Arts wrote:
> Here's my attempt. Consider this simple Diamond hierarchy:
[...]
> Now, with this diagram the following code probably doesn't do what you expect:
Actually, it does what is expected. The old mro specifically says,
bottom-top, le
On Sun, Jun 27, 2010 at 2:09 AM, Steven D'Aprano wrote:
> On Sun, 27 Jun 2010 03:05:16 am Payal wrote:
>>
>> Can you give any simple example where this simple mro will work
>> incorrectly?
>
> Probably not... it's quite complicated, which is why it's rare. I'll
> have a think about it and see what
On Sun, 27 Jun 2010 03:05:16 am Payal wrote:
> Thanks a lot for the quick answer. Still some doubts below.
>
> On Sat, Jun 26, 2010 at 11:07:17PM +1000, Steven D'Aprano wrote:
> > The old MRO (Method Resolution Order) is broken for classes using
> > multiple inheritance with a diamond shape inherit
only new classes can have properties, a major tool
On Sat, Jun 26, 2010 at 8:17 AM, Payal wrote:
> Hi,
> Some questions about which I am a bit confused.
>
> 1. I know there is a difference between mro of classic and new style
> classes. but I do not get why we need the new mro, the old one is eas
Well the application of defining ones own error is in a module. For example,
if I make a banking account module, I might define a WithdrawError if there
is a place where a error might occur. That way if client code tries to
withdraw too much, you can have a very descriptive error making it easier t
Hello Payal!
On Saturday June 26 2010 19:05:16 Payal wrote:
> Can we say that our own exception classes have only maybe a doc-string
> and pass, nothing more?
No, you let the exception transport the information that you need for handling
the error. This is an exception that I use to transport us
Thanks a lot for the quick answer. Still some doubts below.
On Sat, Jun 26, 2010 at 11:07:17PM +1000, Steven D'Aprano wrote:
> The old MRO (Method Resolution Order) is broken for classes using
> multiple inheritance with a diamond shape inheritance diagram. Not a
> little bit broken, but horribl
On Sat, 26 Jun 2010 10:17:45 pm Payal wrote:
> Hi,
> Some questions about which I am a bit confused.
>
> 1. I know there is a difference between mro of classic and new style
> classes. but I do not get why we need the new mro, the old one is
> easy to predict and understand?
The old MRO (Method Re
Hi,
Some questions about which I am a bit confused.
1. I know there is a difference between mro of classic and new style
classes. but I do not get why we need the new mro, the old one is easy
to predict and understand?
2. A friend of mine told me that in C++ abstract classes are classes
which can
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