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by: Andrew Durdin |
last post by:
In Python, you can override the behaviour of most operators for a
class, by defining __add__, __gt__, and the other special object
methods.
I noticed that, although there are special methods for most operators,
they are conspicuously absent for the logical "or" and "and". I'm
guessing that the reason for this is that these operators
short-circuit if their first operand answers the whole question?
Would it be possible to allow...
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by: Ali Eghtebas |
last post by:
Hi,
I have 3 questions regarding the code below:
1) Why can't I trap the KEYDOWN while I can trap KEYUP?
2) Is it correct that I use Return True within the IF-Statement? (I've
already read the documentation but it is rather hard to understand so please
don't refer to it :)
3) Many examples in the newsgroups use Return MyBase.ProcessKeyPreview(m) as
the last code line while I have used Return MyBase.ProcessKeyEventArgs(m)
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by: James Marshall |
last post by:
I'm writing a library where I want to override document.write(), but for
all document objects; thus, I want to put it in the prototype. I tried
Document.prototype.write= my_doc_write ;
but it didn't work. I discovered that this seemed to work:
HTMLDocument.prototype.write= my_doc_write ;
Why does HTMLDocument work here but not Document? Will this second
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by: Edward Diener |
last post by:
Is it possible for a derived class to override a property and/or event of
its base class ?
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by: Hongzheng Wang |
last post by:
Hi,
I have a problem about the overriding of private methods of base
class.
That is, if a method f() of base class is private, can the derived
class overriding f() be overriding?
For example,
class base {
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by: Massimiliano Alberti |
last post by:
Can I specialize a template function in a subclass without overriding
it? (the main template function is defined in a base class).
Now I'm doing something like that:
(in base class)
template<class X>
void myfunc(X par1) { }
(in derived class)
template<class X>
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by: zero |
last post by:
I'm having trouble with overriding methods in subclasses. I'll explain
the problem using some code:
class BaseClass
{
protected:
void method2();
public:
void method1();
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by: Susan Baker |
last post by:
Hello everybody,
I'm new to C++ (I have some C background). I've read up on this topic a
few times but it just dosen't seem to be sinking in.
1. Whats the difference between overloading and overriding?
2. When is one preferable to use as opposed to the other?
3. How are virtual functions related to this topic
(overloading/overriding) - a real world example of using virtual
functions would be very much appreciated.
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by: Amin Sobati |
last post by:
Hi,
I have two classes. Class2 inhertis Class1:
-----------------------------
Public Class Class1
Public Overridable Sub MySub()
End Sub
End Class
Public Class Class2
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by: r035198x |
last post by:
The Object class has five non final methods namely equals, hashCode, toString, clone, and finalize.
These were designed to be overridden according to specific general contracts. Other classes that make use of these methods assume that the methods obey these contracts so it is necessary to ensure that if your classes override these methods, they do so correctly.
In this article I'll take a look at the equals and hashCode methods.
...
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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: 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: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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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: 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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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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