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by: Stian Søiland |
last post by:
Could anyone explain to me why this does not work as intended?
>>> class Oldstyle:
.... pass
....
>>> old = Oldstyle()
>>> old == 1
False
>>> old.__eq__ = lambda x: True
>>> old == 1
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by: Chris |
last post by:
Is there any way to make the class Z behave the same way as class Y?
Chris
class Y:
value = 42
def __hasattr__(self, name):
if name == '__int__':
return True
def __getattr__(self, name):
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by: Dr John Stockton |
last post by:
It has appeared that ancient sources give a method for Numeric Date
Validation that involves numerous tests to determine month length;
versions are often posted by incomers here. That sort of code seems
unnecessarily long.
For some while, the following approach has been given here :-
function ValidDate(y, m, d) { // m = 0..11 ; y m d integers, y!=0
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by: ziga.seilnacht |
last post by:
"""
I am trying to write some classes representing the quaternion number.
I wrote a base class, which implements only the numerical interface,
and a few subclasses, which provide methods for their specific domain.
Since the operator methods will be the same for all these classes,
the base class operator methods don't explicitly return an instance
of this base class, but rather an instance of the class that called
them (ie 'return...
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by: Serve La |
last post by:
Now that implementations are becoming available, I've started to
learn more about C99.
Now I was reading about the isgreater/isgreaterequal/isless/...
macro's and I'm wondering about why they are here? What's the
difference with the normal relational operators?
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by: spam.noam |
last post by:
Hello,
Guido has decided, in python-dev, that in Py3K the id-based order
comparisons will be dropped. This means that, for example, "{} < "
will raise a TypeError instead of the current behaviour, which is
returning a value which is, really, id({}) < id().
He also said that default equality comparison will continue to be
identity-based. This means that x == y will never raise an exception,
as is the situation is now. Here's his reason:
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by: Sheldon |
last post by:
Hi,
I am trying to build a large array using concatenate function in
python.
So as I loop over the number of arrays, of which there are 12 (4 down
and 3 across), I create 3 long arrays by concatenating them at the
bottom and then concatenating them side by side:
for ind in range(num_arrays):
if ind == 0:
bias_down1 = array(bias)
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by: Steven D'Aprano |
last post by:
I'm writing a class that implements rich comparisons, and I find myself
writing a lot of very similar code. If the calculation is short and
simple, I do something like this:
class Parrot:
def __eq__(self, other):
return self.plumage() == other.plumage()
def __ne__(self, other):
return self.plumage() != other.plumage()
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by: Ethan Furman |
last post by:
Greetings, List!
I'm working on a numeric data type for measured values that will keep
track of and limit results to the number of significant digits
originally defined for the values in question.
I am doing this primarily because I enjoy playing with numbers, and also
to get some experience with unit testing.
At this point I have the __init__ portion finished, and am starting on
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by: Gabriel Genellina |
last post by:
En Thu, 10 Jul 2008 17:37:42 -0300, Ethan Furman <ethan@stoneleaf.us>
escribi�:
If your objects obey the trichotomy law (an object MUST BE less than,
greater than, or equal to another one, and there is no other possibility)
then __cmp__ is enough, and easier to define than all the rich comparison
operations.
In other cases, __cmp__ is not suitable: by example, complex numbers can't
define "greater than" ; you can only use "equal" or...
|
by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
|
| |
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
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Your website is...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
|
by: bsmnconsultancy |
last post by:
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