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by: Sebastien Degardin |
last post by:
Hello,
I need to use a Factory pattern to create services class.
i have an interface --> MyService
i can have an abstract class --> MyAbstractService
i have several concrete class for this service --> MyServiceVersion1_1
MyServiceVersion1_2.
I would like to create a factory which could instantiate object using
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by: Medi Montaseri |
last post by:
Hi,
Given a collection of similar but not exact entities (or products)
Toyota, Ford, Buick, etc; I am contemplating using the Abstraction pattern
to provide a common interface to these products. So I shall have an
Abstract Base called 'Car' implemented by Toyota, Ford, and Buick.
Further I'd like to enable to client to say
Car *factory;
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by: Chris Capel |
last post by:
What is the rationale behind the decision not to allow abstract static class
members? It doesn't seem like it's a logically contradictory concept, or
that the implementation would be difficult or near-impossible. It seems like
it would be useful. In fact, there's a place in my code that I could make
good use of it. So why not?
Chris
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by: Rachel Devons |
last post by:
All,
I'm struggling with an OOP concept. Let me try to define what I'm wanting by
using some classic examples.
Let's say that I have classes called Square & Circle that derive from class
Shape. Within class Shape, it has a method called Save to save the object to
disk. It's defined in Shape because the logic to save the shapes is uniform
across all shapes.
Furthermore, let's say I've defined an interface called IDraw that includes
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by: Christer |
last post by:
Hi all!
We're creating an administration for a web application. This includes
severeal aspx pages.
Our key entity in the web application is "Profile", which can have a
certain type.
Based on the profile type, the administration pages will have some
small changes, such as displaying a few extra tabs, or maybe change
the available choices in a dropdown.
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by: mailforpr |
last post by:
Hi.
Let me introduce an iterator to you, the so-called "Abstract Iterator"
I developed the other day.
I actually have no idea if there's another "Abstract Iterator" out
there, as I have never looked for one on the net (I did browse the
boost library though). It doesn't matter right now, anyway.
To put it simply, Abstract Iterator is mainly a wrapper class. It helps
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by: Nindi |
last post by:
5 Files
Singleton.h The Singleton
Factory.h The factory creating new objects. The
Base class of the hierachy stores a typelist
identifying the signature of the constructors to
be called in the hierachy by the Factory
StaticFactory Returning refernences to a static object .. typelist
as above.
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by: Duy Lam |
last post by:
Hi everyone,
Sorry, I don't know what group to post this problem, I think may be this
group is suitable.
I'm styduing DAO (Data Access Object) pattern in this link
http://java.sun.com/blueprints/corej2eepatterns/Patterns/DataAccessObject.html.
While I've read about implementing Data Access Objects by Factory Method
Pattern
(http://java.sun.com/blueprints/corej2eepatterns/Patterns/images09/figure09_07.gif)
and Abstract Factory Pattern...
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by: suresh_rai |
last post by:
Hello
I am hoping someone can give me very needed help. I am wanting some C
+
+ code for 'C++ Abstract Factory'. I need code to be free. I am been
learning Design patterns.
I found some code on web but dont know which is one is ok.
http://programmerjoe.com/2007/03/18/the-abstract-factory-pattern-in-c/
http://www.codeproject.com/KB/architecture/DesignPattern.aspx
Loki :in text book
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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: 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: 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: 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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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