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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: 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: Tom Dacon |
last post by:
I'm curious to see if anyone has an opinion on this little design question -
I'm doing a computational astronomy library in C#, purely for my own use,
and one of the things that happens regularly is conversion of coordinates
from one frame of reference to another: spherical coordinates in the
ecliptic frame of reference, spherical coordinates in the equatorial frame
of reference, 3D rectangular coordinates in either, galactic coordinates,...
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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: FluffyCat |
last post by:
New on November 29, 2005 for www.FluffyCat.com PHP 5 Design Pattern
Examples - the Command Pattern.
Since you all enjoyed the Visitor Pattern so much yesterday, today I
have the Command Pattern for you. This one is pretty straight
forward. In the Command Pattern an object encapsulates everything
needed to execute a method in another object.
http://www.fluffycat.com/SDCMSv2/PHP-Design-Patterns-Command/
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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: Anastasios Hatzis |
last post by:
I'm looking for a pattern where different client implementations can use the
same commands of some fictive tool ("foo") by accessing some kind of API.
Actually I have the need for such pattern for my own tool
(http://openswarm.sourceforge.net). I already started restructuring my code
to separate the actual command implementations from the command-line scripts
(which is optparser-based now) and have some ideas how to proceed. But
probably...
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by: weaknessforcats |
last post by:
Design Patterns: Visitor
Introduction
Polymorphism requires a class hierarchy where the interface to the hierarchy is in the base class. Virtual functions allow derived classes to override base class functions. Applications using polymorphism typically have functions with base class pointers or references as arguments. Then derived objects are created and used as arguments to these functions. Inside the function, only the base class methods...
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by: Dormilich |
last post by:
Hi guys,
I'm want to write a class for validating xml files, but I'm not sure about the pattern the class shall have.
what I have so far:
a class that's doing XSLT transformation:
class XSLTransform
{
__construct() // checking if files are loaded from file or string
load() // loading XML & XSL files/strings
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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: 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: 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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