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by: David MacQuigg |
last post by:
I'm not getting any feedback on the most important benefit in my
proposed "Ideas for Python 3" thread - the unification of methods and
functions. Perhaps it was buried among too many other less important
changes, so in this thread I would like to focus on that issue alone.
I have edited the Proposed Syntax example below to take out the
changes unecessary to this discussion. I left in the change of
"instance variable" syntax (...
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by: Anthony Baxter |
last post by:
To go along with the 2.4a3 release, here's an updated version of
the decorator PEP. It describes the state of decorators as they
are in 2.4a3.
PEP: 318
Title: Decorators for Functions and Methods
Version: $Revision: 1.34 $
Last-Modified: $Date: 2004/09/03 09:32:50 $
Author: Kevin D. Smith, Jim Jewett, Skip Montanaro, Anthony Baxter
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by: Bryan Olson |
last post by:
The current Python standard library provides two cryptographic
hash functions: MD5 and SHA-1 . The authors of MD5 originally
stated:
It is conjectured that it is computationally infeasible to
produce two messages having the same message digest.
That conjecture is false, as demonstrated by Wang, Feng, Lai and
Yu in 2004 . Just recently, Wang, Yu, and Lin showed a short-
cut solution for finding collisions in SHA-1 . Their result
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by: Chris |
last post by:
I am having a very strange problem involving virtual
functions in template classes. First of all, here is an
extremely simplified structure of the two classes I am
having problems with.
template<class Type> class base
{
public:
base& operator/=(const base&);
Type *image;
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by: vabby |
last post by:
Hi
I have run into an eerie situation whihc i cant make out. I have a
class A which has has two virtual functions with the same name, having
diff arguments. Basically a case of function overloading.
Also there is a class B, which is derived form A and has one of the
functions in the base class overridden.
So this is the scenario.
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by: Jess |
last post by:
Hello,
If I have a class that has virtual but non-pure declarations, like
class A{
virtual void f();
};
Then is A still an abstract class? Do I have to have "virtual void
f() = 0;" instead? I think declaring a function as "=0" is the same
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by: Christopher Pisz |
last post by:
My problem is my derived class is getting called twice instead of the base
and then the derived. I thought this was the purpose for virtuals and
dynamic casting :/
I want my base class to have its method called and then the derived class
have its method called. What am I not understanding?
Int the following code, my Event Tester class is getting called twice for
keyboard events when I step through the debugger:...
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by: Angus |
last post by:
I am developing a server which receives a range of different
messages. There are about 12 different message types so I thought
that a good idea would be to devise a class for each message type.
Then in my base class I for example have a pure virtual function
called eg PerformAction. Then in each message class I implement
PerformAction.
The base class works out what the type of message is and then calls
the correct inherited class...
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by: =?Utf-8?B?Y2FybG0=?= |
last post by:
Hello,
I searched for an answer to my question and found similar posts,
but none that quite addressed the issue I am trying to resolve.
Essentially, it seems like I need something like a virtual static
function (which I know is illegal), but, is there a way to provide
something similar? The class that is the target of my inquiry is a
template class that interfaces to one of several derived classes
through a pointer to a base class. The...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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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...
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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.
The Art of Business Website Design
Your website is...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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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...
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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...
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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: 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
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