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by: Patchwork |
last post by:
Hi Everyone,
I have a design related question (in C++) that I am hoping someone can help
me with. It is related to my previous post but since it was pointed out that
I was more or less asking the wrong questions about the wrong 'topic'
(polymorphism) I have posted this new question. Please don't see this as a
spurious attempt to repost :-)
As mentioned previously, there is a very real problem I am trying to solve,
but I have reduced...
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by: Chris F Clark |
last post by:
1) I would really like to ask this on comp.lang.c#, but no such group
exists. However, perhaps someone in one of the above two groups
will know the answer and help me out.
In my product, I use a variation of a design pattern called
"generation gap". In particular, there is library code that knows
about certain classes that are user customized and generated with
those customizations on behalf of the user. This is done via "opaque"...
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by: emma middlebrook |
last post by:
Hi
Straight to the point - I don't understand why System.Array derives
from IList (given the methods/properties actually on IList).
When designing an interface you specify a contract. Deriving from an
interface and only implementing some of it means something is wrong:
either the interface specification is wrong e.g. not minimal or the
derivation is wrong e.g. the type can't actually honour this contract.
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by: tshad |
last post by:
Many (if not most) have said that code-behind is best if working in teams -
which does seem logical.
How do you deal with the flow of the work?
I have someone who is good at designing, but know nothing about ASP. He can
build the design of the pages in HTML with tables, labels, textboxes etc.
But then I would need to change them to ASP.net objects and write the code
to make the page work (normally I do this as I go - can't do this...
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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: Daniel Santa Cruz |
last post by:
Hello all,
I've been trying to go over my OO Patterns book, and I decided to try
to implement them in Python this time around. I figured this would
help me learn the language better.
Well, I've gotten stuck with my first go at OO patterns with Python. I
guess it goes without say that some of the stuff that are taken for
granted in most of the books (ie. Interfaces, Abstract classes) don't
really apply to Python per say, but the idea...
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by: Nate |
last post by:
Scenario:
In a commerce application, there is a Product class. Along with the Product
class there is a form (the text that goes in the labels of the input
controls) for inputting and updating existing instances of existing Product
objects. We'll call the second a ProductForm. Both would be data-driven.
I view these as 2 distinct classes. Product and ProductForm. Where Product
contains the business end and ProductForm contains the...
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by: Orgun |
last post by:
Hi,
I sent this message to the moderated c++ group too but it is
waiting for moderator approval and I wanted to send here too.
I am new to Design Patterns. I want to write a simple
DeviceManager which is only interested in CD/DVD devices. I want to get
the list of CD/DVD devices and "be informed when a disc inserted into a
device". I am developing this on Linux. So, I used HAL API and read
some system (actually /proc) files to gather...
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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: 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: 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: 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: 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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