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by: Charles Law |
last post by:
This is going to seem like a basic OO question, but it comes up and bites me
every now and again.
Suppose we have a multi-tiered protocol to implement, what is the logical,
OO way to design the handler? For example, let's say that we have to
implement the ISO 7-layer protocol, or something like an Allen-Bradley
master-slave protocol. At the lowest layer we might only need to top and
tail the data being transported, such as DLE STX
DLE...
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by: Billy Porter |
last post by:
Greetings,
I got a class that wraps the System.Data.SqlClient.SqlConnection class (no
COM interaction). I'm not sure if I'm supposed to implement the IDisposable
pattern for this wrapper or not. Since one of it's members (SqlConnection)
implements this interface, I'm thinking maybe I ought to. But on the other
hand, those unmanaged resources has already been wrapped in the
SqlConnection class...
If so, how would my Dispose method look...
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by: Sanjay Vyas |
last post by:
Sorry, forgot to cross post this one..
This is rather unusual as we would expect any Collection class to implement
ICollection interface and furthermore a Dictionary class should implement
IDictionary interface. The StringDictionary class does implements all the
methods of ICollection and IDictionary yet it does not list these
interfaces. Am I missing something here or was it an oversight on the part
of the class developer. Maybe I have...
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by: Peter |
last post by:
I want to copy a parent class instance's all datas to a child's. It's
actually a C++'s copy constructor. But why the following code does not
work - there is a compile error! How it should look like?
(The background is I don't know (I don't care indeed) all members in
DataGrid, so I don't want to copy all members in DataGrid one by one.)
public class GridEx : DataGrid
{
public GridEx()
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by: Sherif ElMetainy |
last post by:
Hello
I was just got VS 2005 preview, and was trying generics.
I tried the following code
int intArray = new int;
IList<int> intList = (IList<int>) intArray;
it didn't compile, also the following didn't compile
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by: Brett Hall |
last post by:
I have a VB.NET interface that my managed C++ code is to implement. I
seem to
be stuck implementing an event defined in that interface. Does anyone
have a
simple code snippet that will show me the basics of what I need to
implement?
I've seen all the MSDN articles on implementing events in managed C++
and
I've gotten events to work without issue when implementing all the
constructs
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by: Stacey Levine |
last post by:
I have a webservice that I wanted to return an ArrayList..Well the service
compiles and runs when I have the output defined as ArrayList, but the WSDL
defines the output as an Object so I was having a problem in the calling
program. I searched online and found suggestions that I return an Array
instead so I modified my code (below) to return an Array instead of an
ArrayList. Now I get the message when I try to run just my webservice...
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by: moondaddy |
last post by:
If I'm in a class that inherits an interface, is there a shortcut key that
will write the implementation of the interface into the class? I remember
seeing something like this in vb.net.
Thanks.
--
moondaddy@nospam.nospam
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by: emin.shopper |
last post by:
I had a need recently to check if my subclasses properly implemented
the desired interface and wished that I could use something like an
abstract base class in python. After reading up on metaclass magic, I
wrote the following module. It is mainly useful as a light weight tool
to help programmers catch mistakes at definition time (e.g., forgetting
to implement a method required by the given interface). This is handy
when unit tests or...
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by: Tony Johansson |
last post by:
Hello!
Assume you have the following interface and classes shown below.
It is said that a class must implement all the methods in the interface it
inherits.
Below we have class MyDerivedClass that inherits IMyInterface but
MyDerivedClass doesn't implement method DoSomething() it inherits it from
the base class MyBaseClass.
So the statement that a class must implement all method in an interface that
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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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: 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: 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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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