|
by: Dave |
last post by:
Hello all,
The methodology of policy-based design states that one should inherit from
policy classes and, of course, these classes must provide an agreed-upon
public interface and semantics.
I would like to understand better why inheritance, rather than containment,
is espoused. The only things I can see that inheritance provides beyond
containment is the possibility of polymorphism and access to protected
members. Since neither of...
|
by: davidrubin |
last post by:
Structural inheritance (inheriting implementation) is equivalent to
composition in that a particular method must either call 'Base::foo' or
invoke 'base.foo'. Apparantly, The Literature tells us to prefer
composition over inheritance. Can anyone provide some reasons why this
is the case (based on "real-world" experience)? For example, is
structural inheritance more difficult to maintain? More difficult to
test? Have a larger impact on...
|
by: Code4u |
last post by:
My colleagues and I have been discussing techniques for implementing
interfaces in C++. We're looking for a mechanism similar to COM's
QueryInterface, in which a certain types of objects can be queried, at
run-time, for a particular interface and if it is supported, a pointer
or reference to that interface passed to the caller. Two possible
implementations came up, multiple inheritance and composition. Using
MI the class multiply inherits...
|
by: Shawnk |
last post by:
Some Sr. colleges and I have had an on going discussion relative to when and
if
C# will ever support 'true' multiple inheritance.
Relevant to this, I wanted to query the C# community (the 'target' programming
community herein) to get some community input and verify (or not) the
following
two statements.
Few programmers (3 to7%) UNDERSTAND 'Strategic Functional Migration
|
by: Wilson |
last post by:
Hi, a very simple question. I am trying to understand inheritance
using c++ and dont cee how i could use three classes to create an
accounting program using inheritance. e.g one class containing members
for both, and then a class for checking accounts and a class for
savings. Finally could you just clarify that this is the correct use
of i nheritance because i am thoroughly confused.
|
|
by: Bart Simpson |
last post by:
I remember reading on parashift recently, that "Composition is for code
reuse, inheritance is for flexibility" see
(http://www.parashift.com/c++-faq-lite/smalltalk.html#faq-30.4)
This confused me somewhat as I have always thought you get code reuse
"for free" with inheritance. Am I missing something?. Will someone care
to explain ??
|
by: snewman18 |
last post by:
In learning about design patterns, I've seen discussion about using
inheritance when an object's relationship to another object is 'is-a'
and composition when the relationship is 'has-a'.
Since this is all new and I'm still learning, I was hoping someone can
give me some pointers on best practices on applying these ideas. If my
logic is incorrect on anything, please don't hesitate to tell me where
I'm wrong - I'm completely open to any...
|
by: GD |
last post by:
Please remove ability to multiple inheritance in Python 3000.
Multiple inheritance is bad for design, rarely used and contains many
problems for usual users.
Every program can be designed only with single inheritance.
I also published this request at http://bugs.python.org/issue2667
|
by: Pallav singh |
last post by:
Hi All
i have dout when to use Composition and Inheritance while designing
Module in C++
Thanks
Pallav
|
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...
|
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,...
|
|
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...
|
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...
|
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();...
|
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...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
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
|
|
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
|