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by: Omer van Kloeten |
last post by:
The Top Level Design:
The class Base is a factory class with a twist. It uses the Assembly/Type
classes to extract all types that inherit from it and add them to the list
of types that inherit from it. During run time, using a static method, the
class creates an instance of the derived class using the Activator class and
returns it. This design pattern is very similar to the design pattern
applied by the Assembly class.
The twist is...
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by: Debajit Adhikary |
last post by:
I'm still pretty new to design patterns... I was wondering, is there
any difference between the Bridge Pattern and Herb Sutter's Pimpl
Idiom?
Both delegate responsibility to an implementation and thus allow a
clear and flexible separation of interface and implementation such that
the implementation can be changed freely.
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by: Lorn |
last post by:
I'm undertaking wriitng a bridge application between a remote data
server API and multiple utility applications which pull and send data
to the API. The reason for a bridge is that the data server limits
connectivity to a single connection/account.
I already have the bridge->API connection functioning and now I need to
begin the multiple utilityApps->bridge connection. I have never
undertaken a task as this and I'm wondering what the...
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by: FluffyCat |
last post by:
In Febraury - April of 2002 I put together in Java examples of all 23
of the classic "Gang Of Four" design patterns for my website. Partly
I wanted to get a better understanding of those patterns. They are
still online at
http://www.fluffycat.com/java/patterns.html
Since September 2003 I've mainly been using PHP, and now that PHP 5 is
becoming more available I am going to try the same thing I did in Java
with PHP.
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by: FluffyCat |
last post by:
New on November 28, 2005 for www.FluffyCat.com PHP 5 Design Pattern
Examples - the Visitor Pattern.
In the Visitor pattern, one class calls a function in another class
and passes an instance of itself. The called class has special
functions for each class that can call it.
With the visitor pattern, the calling class can have new operations
added without being changed itself.
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by: Krivenok Dmitry |
last post by:
Hello All!
I am trying to implement my own Design Patterns Library.
I have read the following documentation about Observer Pattern:
1) Design Patterns by GoF
Classic description of Observer. Also describes implementation
via ChangeManager (Mediator + Singleton)
2) Pattern hatching by John Vlissides
Describes Observer's implementation via Visitor Design Pattern.
3) Design Patterns Explained by Alan Shalloway and James Trott
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by: Adrian |
last post by:
The code below was taken from an example.
All the "noise" in the example was thrown out.
This is supposedly according to the bridge
pattern. What in the code (which lines)
represent the bridge pattern (make this code
to be according to the bridge pattern),
and what is the advantage of employing the
bridge pattern? It seems "l'art pour l'art" to me.
Adrian
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by: ghost_of_rooney |
last post by:
Maybe my example isn't a good candidate for Bridge, or maybe I'm
applying Bridge incorrectly, but I don't see the benefit of the
pattern here. If I eliminated the Bridge and extended the shape
hierarchy to implement all combinations of shape/api, the number of
classes would be the same and the factory could still be used to
create the correct one. The client would still only care about the
shape interface. Seems like the...
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by: Simon Woods |
last post by:
Hi
I'm just working through (and learning) the standard GoF Design Pattern and
the example of the Bridge pattern on
http://www.dofactory.com/Patterns/PatternBridge.aspx#_self2
I notice at the heart of the real world example is an abstract class
MustInherit Class DataObject
Public MustOverride Sub NextRecord()
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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:
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: 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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